Patent Application
20230379827
This application relates to the technical field of communications, and to a power saving processing method and apparatus, and a terminal.
A discontinuous reception (DRX) mechanism is introduced for both long term evolution (LTE) and New Radio (NR), and power saving of a terminal is achieved by configuring DRX on time and off time.
Embodiments of this application provide a power saving processing method and apparatus, and a terminal.
According to a first aspect, an embodiment of this application provides a power saving processing method, including:
According to a second aspect, an embodiment of this application provides a power saving processing method, including:
According to a third aspect, an embodiment of this application provides a power saving processing method, including:
According to a fourth aspect, an embodiment of this application provides a power saving processing apparatus, including at least one of the following:
According to a fifth aspect, an embodiment of this application provides a power saving processing apparatus, including:
According to a sixth aspect, an embodiment of this application provides a power saving processing apparatus, including:
According to a seventh aspect, an embodiment of this application provides a terminal. The terminal includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, where the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect, or implement the steps of the method according to the second aspect, or implement the steps of the method according to the third aspect.
According to an eighth aspect, an embodiment of this application provides a non-transitory readable storage medium, storing a program or instructions, where the program or instructions, when executed by a processor, implement the steps of the method according to the first aspect, or implement the steps of the method according to the second aspect, or implement the steps of the method according to the third aspect.
According to a ninth aspect, an embodiment of this application provides a chip. The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions of a network side device, to implement the method according to the first aspect, or to implement the method according to the second aspect, or to implement the method according to the third aspect.
According to a tenth aspect, an embodiment of this application provides a computer program product, where the computer program product is stored in a non-transitory storage medium, and the computer program product is executed by at least one processor, to implement the method according to the first aspect, or to implement the method according to the second aspect, or to implement the method according to the third aspect.
The technical solutions in embodiments of this application are clearly described in the following with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application shall fall within the scope of protection of this application.
In the specification and claims of this application, the terms “first” and “second” are used to distinguish similar objects, but are unnecessarily used to describe a specific sequence or order. It is to be understood that the terms used in this way is exchangeable in a proper case, so that the embodiments of this application described herein can be implemented in an order different from the order shown or described herein, and in addition, the objects distinguished by “first” and “second” are generally one type, and the number of the objects is not limited, for example, there may be one first object, or a plurality of first objects. In addition, “and/or” used in this specification and the claims represents at least one of the connected objects, and the character “/” generally indicates that the associated objects are in an “or” relationship.
An LTE system supports sidelink (SL) transmission, that is, data transmission is directly performed on a physical layer between terminals. Communication of an LTE sidelink is performed based on broadcasting. Although the LTE sidelink can be used to support basic security type of vehicle to everything (V2X) communication, it does not applicable to other more advanced V2X services. A 5th generation mobile communication technology (5G) NR system supports a more advanced sidelink transmission design, for example, unicast, multicast, or the like, so as to support more comprehensive service types.
An SL terminal needs to maintain an active state, that is, to perform receiving and/or sending of a target channel/signal, for example, to receive data, within an SL DRX active time or on duration.
However, in some conditions, there are cases where a receiving terminal is wake-up but no valid transmission of SL data, which results in unnecessary power consumption of the receiving terminal.
It is worth pointing out that the technologies described in the embodiments of this application are not limited to the long term evolution (LTE)/LTE-advanced (LTE-A) systems, and may also be used in other wireless communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency-division multiple access (SC-FDMA), and other systems. The terms “system” and “network” in the embodiments of this application are often used interchangeably. The technology described in this application can be applied to the systems and radio technologies mentioned above, and can also be applied to other systems and radio technologies. The following description describes a new radio (NR) system for exemplary purposes, and uses the NR terminology in most of the following description, these techniques are also applicable to applications other than NR system applications, such as a 6th generation (6G) communication system.
The power saving processing method and apparatus, and the terminal provided in the embodiments of this application are described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.
A first terminal, a second terminal, a third terminal, and a fourth terminal mentioned in the embodiments of this application are all terminals that support a sidelink SL. There are two resource allocation mechanisms for the SL terminals.
Mode 1: a control node schedules a resource to a terminal for transmission, and a receiving terminal may be a Mode1 terminal or a Mode2 terminal. In this application, the Mode1 terminal is a terminal which is scheduled by the control node or for which an SL resource is provided by the control node, and a name thereof may be Mode1 or others, for example, Mode3, Mode4, or the like, which is not specifically limited herein.
Mode 2: a terminal autonomously determines, through sensing, a resource for sending.
It should be noted that, the power saving processing method provided in the embodiments of this application is applicable to power saving in an SL scenario in a granted frequency band, and/or, power saving in an SL scenario in an ungranted frequency band; or applicable to a scenario where power saving is needed at either end of a sending end and a receiving end (for example, vehicle-to-pedestrian V2P), or a scenario where power saving is needed at both ends of a sending end and a receiving end (for example, communication such as peer-to-peer (P2P) or private network Internet of Things (PIOT) performed through an SL or other interfaces). A terminal may perform SL reception or transmission at different time points, respectively, that is, may be a sending terminal and a receiving terminal, respectively.
As shown in
Step 201: a first terminal determines, based on a target condition and/or first information, transmission of power saving information, and/or determines, based on the target condition and/or the first information, that a target terminal is dormant or wake-up, or non-active or active, where
Optionally, determining that the target terminal is dormant or wake-up, or non-active or active includes: determining that the target terminal is dormant or wake-up, or non-active or active on a target link. The target link includes: a sidelink SL, and/or a Uu.
It should be noted that, step 201 of this embodiment of this application includes at least the following situations:
the first terminal determines, based on the target condition, the transmission of the power saving information;
In the embodiments of this application, “transmission” refers to sending or receiving, that is, the transmission of the power saving information of the first terminal includes: at least one of sending of the power saving information of the first terminal, receiving of the power saving information of the first terminal, the first terminal not transmitting the power saving information, or the first terminal not receiving the power saving information.
It should be noted that, the dormancy or wake-up, or inactivation or activation of the first terminal (or the second terminal) mentioned in the embodiments of this application includes:
In other words, the activation or wake-up may be interpreted as that the SL power saving mechanism enters an active time, or that the activation or wake-up is performed in the active time or within the active time of the SL power saving mechanism, or may refer to that a particular behavior may be performed, for example, at least one of not measuring, data receiving, control receiving, synchronization signal receiving, sensing, feeding back, or the like may be performed.
The deactivation or dormancy may be interpreted as that the SL power saving mechanism enters an inactive time, or that the deactivation or dormancy is performed in the active time or within the active time of the SL power saving mechanism, or may refer to that a particular behavior is not performed, for example, at least one of not measuring, not receiving data, not receiving control, not receiving a synchronization signal, not sensing, not feeding back, or the like may be performed.
The SL power saving mechanism may be SL DRX or SL power saving sensing, and the power saving sensing may be partial sensing, or may be some simplified, short, or aperiodic, or triggered sensing.
The SL DRX may be used to control sensing, measuring, monitoring, and/or transmission (the transmission mentioned in this application is receiving or sending) of the target object by the terminal. The target object includes at least one of the following: a control channel, a control signal, a data channel, a data signal, a reference signal, a feedback signal, a feedback channel, a request message, or a response message.
The power saving sensing may be interpreted as a partial sensing mechanism, including a sensing window and a selection window.
It should be noted that, the “power saving information” mentioned in the embodiments of this application may be an SL wake up signal (WUS), which may also be referred to as: state notification information, sleep notification information, deactivation notification (off notification) information, wake notification information, activation notification (on notification) information; the details are not limited herein.
It should be noted that, in this embodiment of this application, in a case that the dormancy or wake-up, or inactivation or activation is determined based on the target condition, the first terminal is within a coverage of the control node (the first terminal may be a mode1 terminal, a connected state mode2 terminal, or an idle mode2 terminal), or the control node may be a first configuration/scheduling SL resource. The control node is a base station or a terminal. Corresponding scenarios of the target condition mainly include the following scenarios.
Scenario 1: intra-radio access technology (RAT) (there is a radio access technology), for example, at least one of that the control node is an NR control node, the Uu of the first terminal is an NR Uu, the Uu interface of the first terminal has a corresponding NR Uu DRX, or the like. The target condition in the scenario is a condition correlated with the NR Uu interface in the following conditions.
Scenario 2: inter-RAT (there are at least two radio access technologies), for example, at least one of that the control node is an LTE control node, the Uu of the first terminal is an LTE Uu, the Uu interface of the first terminal has a corresponding LTE Uu DRX, or the like. The target condition in the scenario is a condition correlated with the LTE Uu interface in the following conditions.
Scenario 3: both intra-RAT and/or inter-RAT may be considered, the target condition is a condition to which both an NR Uu interface and an LTE Uu interface adapt.
Scenario 4: some conditions uncorrelated with the Uu.
In an optional embodiment, in a case that the target condition includes a first condition, that the first terminal determines, based on the target condition, the transmission of the power saving information in step 201 includes:
For example, the power saving information may be configured to indicate dormancy or inactivation, and/or, during wake-up or activation, the first terminal needs to send the power saving information and indicate dormancy or inactivation. In a case that the SL is configured to indicate that “1” represents wake-up or activation, and to indicate that “0” represents dormancy or inactivation, the first terminal sends the power saving information indicating “0” to the second terminal.
Alternatively, in a case that the target condition includes the first condition, that the first terminal determines, based on the target condition, the transmission of the power saving information in step 201 includes:
In another optional embodiment, in a case that the target condition includes a first condition, determining the dormancy or wake-up, or inactivation or activation of the target terminal in step 201 includes:
determining that the target terminal is dormant or non-active in a case that the first condition is satisfied.
Optionally, the first terminal is the receiving terminal, that is, that the receiving terminal is dormant or non-active is determined in a case that the first condition is satisfied.
Optionally, the second terminal is a Mode1 terminal.
Optionally, the first terminal is a Mode1 terminal or a Mode2 terminal, which is not specifically limited herein.
In at least one embodiment of this application, the first condition includes at least one of the following.
Optionally, the first preset requirement is that a quantity of resources available for the SL transmission is greater than a particular threshold.
Optionally, the first preset time and/or the second preset time is one of the following:
For example, the foregoing power saving mechanism is: at least one of a Uu DRX (for example, an NR Uu DRX and/or an LTE Uu DRX) of the first terminal, an SL DRX of the first terminal, an SL DRX of the second terminal, a power saving monitoring configuration of the first terminal, a power saving monitoring configuration of the second terminal, a resource random selection of the first terminal, or a resource random selection of the second terminal.
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
Optionally, the control node is a base station or a terminal having a scheduling capability or a header terminal (header UE, for example, a header terminal in a terminal group) or a terminal that provides auxiliary information, which is not specifically limited herein.
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
In other words, for 13) and 14), descriptions may alternatively be provided as: the target terminal performs or is about to perform switching of a control resource, and switches to the first target control resource, where the first target control resource is not used for SL DCI transmission, is not used for monitoring of SL DCI, does not support SL DCI, or does not include SL DCI.
Optionally, the control resource may be a search space, that is, switching of a search space is performed; or may be a control resource set (CORESET), that is, switching of a CORESET is performed; or may be a control channel element (CCE), that is, switching of a CCE is performed; or may be a physical downlink control channel (PDCCH) candidate, that is, switching of a PDCCH candidate is performed.
Optionally, in this case, the first terminal and/or the second terminal is a Mode1 terminal.
In other words, for 15) and 16), descriptions may alternatively be provided as: the target terminal performs or is about to perform switching of a BWP, a cell, or a carrier, and switches to the first BWP, the first target cell, or the first target carrier, where the first target BWP, the first target cell, or the first target carrier cannot be used for SL transmission, cannot be re-used for SL transmission, does not include an SL resource, does not support an SL, or does not have an association with a second target BWP, a second target cell, or a second target carrier, where the second target BWP, the second target cell, or the second target carrier can be used for SL transmission, can be re-used for SL transmission, includes an SL resource, or supports an SL.
For example, an uplink UL BWP1 is associated with an SL BWP, and in a case that the target terminal switches to a downlink DL BWP2, and an uplink of the target terminal also automatically switches to an UL BWP2, the UL BWP2 being uncorrelated with the SL BWP.
For example, a cell, a carrier, or a BWP where an SL CG (configuration grant) type 1 resource obtained by the first terminal is located is deactivated. In another example, the control node may schedule a resource on a cell 1 for SL transmission by the first terminal, and the cell 1 is deactivated.
Optionally, the target SL resource may be a resource in a target resource pool, a resource in any resource pool, an available SL resource, a resource capable of being used for an SL, or a resource that has a corresponding hybrid automatic repeat request acknowledgement (HARQ-ACK) resource.
For example, Uu resources indicated by uplink and downlink configuration or slot format indication (SFI) include a resource in a particular On duration, and an overlapped resource is indicated as downlink or flexible, and in this case, determining of the transmission of the power saving information may be triggered.
In another example, the sending terminal determines in advance, based on the DRX and an overlapping situation of Uu resources, whether to trigger the transmission of the power saving information. For example, a particular on duration is knocked out by a physical random access channel (PRACH), a UL CG, a reference signal (RS), a physical uplink shared channel (PUSCH), or a physical uplink control channel (PUCCH), or there is an excessively small quantity of SL resources in a particular on duration, or there is an excessively small quantity of SL resources in a target resource pool in a particular on duration, which can trigger the transmission of the power saving information.
In another example, the time unit of the DRX cycle is a physical time or a global logic (full logic) time or a logic time, but in a case that there are excessively few SL resources in a particular on duration or there are excessively few SL resources, in a particular on duration, pertaining to a target resource pool, determining of the transmission of the power saving information is triggered.
In another example, in a case that a particular on duration does not include a resource pool of a PSFCH, but only a transport block (TB) that needs/enables HARQ-ACK feedback temporarily needs to be sent between a sending terminal and a receiving terminal, determining of the transmission of the power saving information is triggered.
For example, that a first preset communication condition is satisfied includes at least one of the following that:
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
Optionally, the first terminal and/or the second terminal is a Mode2 terminal.
d1) in a case that UE A deactivates power saving sensing or resource random selection, and/or, in a case that a DRX configuration of UE B is valid/used: in this case, the first terminal determines the transmission of the SL WUS, which indicates that the DRX configuration of the UE B is valid/used (which may be understood as that the transmission of the terminal in this case is restricted by the limitation of the DRX configuration), and/or, the UE A deactivates the power saving sensing or the resource random selection.
It should be noted that, the first terminal may be the UE A or the UE B.
It should be noted that, the foregoing conditions 1)-17) are correlated with an NR Uu interface or an LTE Uu interface separately.
For example, the Uu of the first terminal is an NR Uu, and the Uu interface of the first terminal has a corresponding NR Uu DRX. In this case, the NR Uu interface of the first terminal may need to remain dormant, so that the control node does not schedule the first terminal to perform SL transmission, or the NR control node has no resource to be provided to the first terminal for SL transmission within a period of time. Optionally, in the foregoing case, the first terminal is a sending terminal or a receiving terminal. Optionally, the first terminal is a sending terminal, for example, a Mode1 terminal. In this case, the second terminal does not need to always remain in an active state to attempt to receive and monitor. Therefore, by triggering the determining, by the first terminal, the transmission of the power saving information, the second terminal may be informed, so that the second terminal may sleep in a subsequent time. Alternatively, in a case that the first terminal is a receiving terminal, for example, a Mode2 terminal within a coverage, determining, by the first terminal, the transmission of the power saving information may be triggered, to inform the second terminal that: the first terminal may be dormant in a next time, and the second terminal may need to avoid transmission to the first terminal in a next active time.
In another example, the Uu of the first terminal is an LTE Uu, and the Uu interface of the first terminal has a corresponding LTE Uu DRX. In this case, the LTE Uu interface of the first terminal may need to remain dormant, and in a case that the SL DRX of the first terminal remains in an active state, good power saving cannot be guaranteed. A possible power saving method includes: maintaining an SL DRX active time and a Uu DRX active time of the first terminal aligned or overlapped, to implement internal coordination, and informing the second terminal that: the first terminal may be dormant in a next time, and the second terminal may need to avoid transmission to the first terminal in a next active time.
For the conditions of 18)-20), SL resources of the first terminal may be deactivated (that is, invalid), and in this case, the first terminal can no longer use these resources to continue the transmission to the second terminal. Optionally, in the foregoing case, the first terminal is a sending terminal or a receiving terminal. Optionally, the first terminal is a sending terminal, for example, a Mode1 terminal. Therefore, by triggering the determining, by the first terminal, the transmission of the power saving information, the second terminal may be informed of that the second terminal may sleep in a subsequent time. Alternatively, in a case that the first terminal is a receiving terminal, for example, a Mode2 terminal within a coverage, determining of the transmission of the power saving information may be triggered to inform the second terminal that: the first terminal is to be dormant in a next time; and subsequently the second terminal may need to transmission to the first terminal in a next active time.
In another optional embodiment, in a case that the target condition includes a second condition, that the first terminal determines, based on the target condition, the transmission of the power saving information in step 201 includes:
For example, the power saving information may be configured to indicate dormancy or inactivation, and/or, during wake-up or activation, the first terminal needs to send the power saving information and indicate dormancy or inactivation. In a case that the SL is configured to indicate that “1” represents wake-up or activation, and to indicate that “0” represents dormancy or inactivation, the first terminal sends the power saving information indicating “1” to the second terminal.
Alternatively, in a case that the target condition includes the second condition, that the first terminal determines, based on the target condition, the transmission of the power saving information in step 201 includes:
In another optional embodiment, in a case that the target condition includes a second condition, determining the dormancy or wake-up, or inactivation or activation of the target terminal in step 201 includes:
Optionally, the first terminal is the receiving terminal, that is, that the receiving terminal is dormant or non-active is determined in a case that the first condition is satisfied.
Optionally, the second terminal is a Mode1 terminal, and the first terminal is a Mode1 terminal or a Mode2 terminal, which is not specifically limited herein.
In at least one embodiment of this application, the second condition includes at least one of the following.
Optionally, the second preset requirement is that a quantity of resources available for the SL transmission is greater than a particular threshold.
Optionally, the tenth preset time and/or the eleventh preset time is one of the following:
For example, the foregoing power saving mechanism is: at least one of a Uu DRX (for example, an NR Uu DRX and/or an LTE Uu DRX) of the first terminal, an SL DRX of the first terminal, an SL DRX of the second terminal, a power saving monitoring configuration of the first terminal, a power saving monitoring configuration of the second terminal, a resource random selection of the first terminal, or a resource random selection of the second terminal.
For example, a WUS (for example, a DCI format 2-6) of the NR Uu indicates that the Uu DRX of the first terminal needs to be woken up or does not need to sleep.
Optionally, for 35)-49), the first terminal and/or the second terminal is a Mode1 terminal.
In other words, for 50) and 51), descriptions may alternatively be provided as: the target terminal performs or is about to perform switching of a control resource, and switches to a second target control resource, where the second target control resource can be used for SL DCI transmission, can be used for monitoring of SL DCI, can support SL DCI, or includes SL DCI. The target terminal is at least one of the first terminal or the second terminal.
Optionally, the control resource may be a search space, that is, switching of a search space is performed; or may be a control resource set (CORESET), that is, switching of a CORESET is performed; or may be a control channel element (CCE), that is, switching of a CCE is performed; or may also be a PDCCH candidate, that is, PDCCH candidate switching is performed.
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
In other words, for 52) and 53), descriptions may alternatively be provided as: the target terminal performs or is about to perform switching of a BWP, a cell, or a carrier, and switches to the third BWP, the third target cell, or the third target carrier, where the third target BWP, the third target cell, or the third target carrier can be used for SL transmission, can be re-used for SL transmission, includes an SL resource, supports an SL, or has an association with a fourth target BWP, a fourth target cell, or a fourth target carrier; and the fourth target BWP, the fourth target cell, or the fourth target carrier can be used for SL transmission, can be re-used for SL transmission, includes an SL resource, or supports an SL, where the target terminal is at least one of the first terminal or the second terminal.
For example, a cell, a carrier, or a BWP where an SL CG type1 resource obtained by the first terminal is located is activated. In another example, the control node may schedule a resource on a cell 1 for SL transmission by the first terminal, and the cell 1 is activated.
Optionally, the target SL resource may be a resource in a target resource pool, a resource in any resource pool, an available SL resource, a resource capable of being used for an SL, or a resource that has a corresponding HARQ-ACK resource.
For example, that a second preset communication condition is satisfied includes at least one of the following that:
Optionally, the first terminal and/or the second terminal is a Mode1 terminal.
Optionally, the first terminal and/or the second terminal is a Mode2 terminal.
In 64)-68), the target terminal is the first terminal and/or the second terminal, and a possible combination condition in 64)-68) includes at least one of the following:
It should be noted that, the first terminal may be the UE A or the UE B.
It should be noted that, the foregoing conditions 31)-59) are correlated with an NR Uu interface or an LTE Uu interface separately.
For example, the Uu of the first terminal is an NR Uu, and the Uu interface of the first terminal has a corresponding NR Uu DRX. In this case, the NR Uu interface of the first terminal may need to remain active, so that the control node does not schedule the first terminal to perform SL transmission, or the NR control node has a resource to be provided to the first terminal for SL transmission within a period of time. Optionally, in the foregoing case, the first terminal is a sending terminal or a receiving terminal. Optionally, the first terminal is a sending terminal, for example, a Mode1 terminal. In this case, the second terminal accordingly needs to maintain in an active state to attempt to receive and monitor. Therefore, by triggering the determining, by the first terminal, the transmission of the power saving information, the second terminal may be informed, so that the second terminal may be activated in a subsequent time. Alternatively, in a case that the first terminal is a receiving terminal, for example, a mode2 terminal within a coverage, determining, by the first terminal, the transmission of the power saving information may be triggered, to inform the second terminal that: the first terminal may be activated in a next time, and the second terminal may perform transmission to the first terminal in a next active time.
In another example, the Uu of the first terminal is an LTE Uu, and the Uu interface of the first terminal has a corresponding LTE Uu DRX. In this case, the LTE Uu interface of the first terminal may remain active. A possible power saving method includes: maintaining an SL DRX active time and a Uu DRX active time of the first terminal aligned or overlapped, to implement internal coordination, and informing the second terminal that: the first terminal may be activated in a next time, and the second terminal may perform transmission to the first terminal in a next active time.
For the conditions of 60)-62), SL resources of the first terminal may be activated, and in this case, the first terminal may use these resources to continue the transmission to the second terminal. Optionally, in the foregoing case, the first terminal is a sending terminal or a receiving terminal. Optionally, the first terminal is a sending terminal, for example, a Mode1 terminal. Therefore, by triggering the determining, by the first terminal, the transmission of the power saving information, the second terminal may be informed of that the second terminal may be activated in a subsequent time. Alternatively, in a case that the first terminal is a receiving terminal, for example, a mode2 terminal within a coverage, determining of the transmission of the power saving information may be triggered to inform the second terminal that: the first terminal may be activated in a next time, and the second terminal may perform transmission to the first terminal in a next active time.
It should be noted that, the method for obtaining any information mentioned in the embodiments of this application may include:
Following the foregoing embodiments, in at least one optional embodiment of this application, the method further includes:
In a case that the first terminal sends an SR/BSR, the base station may schedule a new resource to the terminal, and the terminal may send the power saving information on the new resource, where the power saving information may be transmitted on a sidelink control information SCI and/or a physical sidelink shared channel PSSCH. In this case, the target condition may also be regarded as a condition for triggering the first terminal to send the SR/BSR, or may also be regarded as a condition for triggering the base station to allocate the power saving information resource by using the SR/BSR.
Optionally, the BSR indicates that the buffer is empty.
It should be noted that, in this embodiment of this application, a sequence in which the first terminal transmits the power saving information and the first terminal sends second information to the control node is not limited. For example, after the control node obtains the second information, the control node allocates the power saving information resource to the first terminal.
In an optional embodiment, the first information includes at least one of the following:
In this embodiment of this application, the control node explicitly controls the SL DRX or the power saving information of the first terminal. For example, the control node directly schedules the first terminal to transmit the power saving information, to indicate that the receiving terminal is wake-up or dormant.
Optionally, the first information is a terminal dedicated PDCCH, a group common PDCCH, or higher layer signaling (for example, a radio resource control (RRC) or a media access control (MAC) control element (CE)).
For example, determining, by the first terminal and based on the first information of the control node, the method for determining the transmission of the power saving information includes at least one of the following:
In another optional embodiment, the first information is at least one of the following:
The first terminal determines, based on the first information, the transmission of the power saving information, which includes at least one of the following.
For example, in a case that the power saving information is designed to indicate dormancy/inactivation, and/or, wake-up/activation, the first terminal needs to send the power saving information and indicate dormancy/inactivation.
For example, in a case that the power saving information is designed to indicate receipt/sensing/activation, the first terminal needs to send the power saving information and indicate receipt/sensing/activation.
For example, in a case that a behavior is defined as that dormancy/inactivation is determined by default in order not to send the power saving information, the power saving information does not need to be sent.
For example, in a case that a behavior is defined as that receipt/sensing/activation is determined by default in order not to send the power saving information, the power saving information does not need to be sent.
In another optional embodiment, determining the transmission of power saving information of the first terminal includes:
It should be noted that, the resource of the power saving information may be located before the active time of the power saving mechanism, or within the active time, or after the active time, which is not specifically limited herein.
It should be noted that, the power saving information includes at least one of the following.
First type: the transmission of the power saving information may not directly accept control by the control node.
Similar to a physical sidelink feedback channel PSFCH, the base station does not need to specifically reschedule a resource, and in this case, a periodic or semi-static resources previously configured by the control node may be used.
Second type: the transmission of the power saving information may be controlled by the control node.
For example, in a case that the power saving information adopts the sidelink control information SCI, the control node needs to allocate SCI resources every time the power saving information is transmitted, and then the user can send the power saving information.
In at least one embodiment of this application, the SL power saving mechanism includes at least one of the following:
It should be noted that, the BWP mentioned in the embodiments of this application may be an upstream BWP, a downstream BWP, or an SL BWP. The SL DCI mentioned in this embodiment of this application is used for scheduling, activating, or deactivating an SL resource or an SL configuration, for example, DCI format 3-0 and/or DCI format 3-1, or DCI scrambled by SL-related radio network temporary identity (RNTI), for example, an SL RNTI, or an SL-CS-RNTI.
In a case that UE A (for example, a sending UE) switches to/uses power saving sensing (partial sensing) or resource random selection, UE B (for example, a receiving UE) remains in the active state, or a DRX configuration of UE B is invalid, or UE B does not obtain a DRX configuration;
Optionally, in a case that the UE A switches to/uses/activates partial sensing or random selection, the UE A determines transmission of an SL WUS, indicates that the UE A uses/activates the partial sensing, or indicates that the UE B needs to remain in the active state or that the DRX is invalid.
Optionally, in a case that the UE B remains in the active state or does not obtain a DRX configuration or the DRX configuration is invalid, the UE B determines transmission of an SL WUS, indicates that the UE A uses/activates the partial sensing or the resource random selection, or indicates that the UE B remains in the active state or does not obtain a DRX configuration or that the DRX configuration is invalid.
Optionally, in a case that the UE A switches to/uses/activates full sensing, the UE A determines transmission of an SL WUS, indicates that the UE A uses/activates the full sensing, or indicates that the UE B uses the DRX or the DRX is valid.
Optionally, the UE B uses the DRX or the DRX is valid, the UE B determines transmission of an SL WUS, indicates that the UE A uses/activates the full sensing, or indicates that UE B uses the DRX or the DRX is valid.
Optionally, in a case that the UE A does not use/deactivates the partial sensing or the resource random selection, the UE A determines transmission of an SL WUS, indicates that the UE A does not use/deactivate partial the sensing or the resource random selection, or indicates that the UE B uses the DRX or the DRX is valid.
Optionally, the UE B uses the DRX or the DRX is valid, the UE B determines transmission of an SL WUS, indicates that the UE A does not use/deactivate the partial sensing or the resource random selection, or indicates that the UE B uses the DRX or the DRX is valid.
The first terminal may be the UE A or the UE B.
Assuming that UE1 and UE2 are within a coverage of a base station and that the base station does not schedule the UE1 for sending (for example, to UE2) for a period of time, optionally, first information may be sent to the UE1 to indicate that the UE1 sleeps/is deactivated in a next time, so as to save power. Optionally, first information may be sent to the UE2 to indicate that the UE2 sleeps/is deactivated in a next time, so as to save power.
Assuming that UE1 and UE2 are within a coverage of a base station and that the base station schedules the UE1 for sending (for example, to UE2) for a period of time, optionally, first information may be sent to the UE1 to indicate that the UE1 is wake-up/deactivated in a next time, so as to ensure the performance. Optionally, the first information may be sent to the UE2 to indicate that UE2 is wake-up/activated at a next time, so as to ensure the performance.
In the embodiments of this application, by indirectly controlling transmission of the power saving information by a control node, or by adjusting the transmission of the power saving information based on a predefined target condition, states of the first terminal and/or the second terminal on the sidelink can be adjusted, to avoid unnecessary power consumption of the terminal, thereby achieving the purpose of power saving of the terminal.
As shown in
Step 301: a second terminal determines, based on transmission of power saving information of a first terminal, that a target terminal is dormant or wake-up, or non-active or active, where the target terminal includes: the second terminal, and/or, the first terminal for performing sidelink communication with the second terminal.
In the embodiments of this application, “transmission” refers to sending or receiving, that is, the transmission of the power saving information of the first terminal includes: at least one of sending of the power saving information of the first terminal, receiving of the power saving information of the first terminal, the first terminal not transmitting the power saving information, or the first terminal not receiving the power saving information.
It should be noted that, the dormancy or wake-up, or inactivation or activation of the first terminal (or the second terminal) mentioned in the embodiments of this application includes:
The SL power saving mechanism may be SL DRX or SL power saving sensing, and the power saving sensing may be partial sensing, or may be some simplified, short, or aperiodic, or triggered sensing.
The SL DRX may be used to control sensing, measuring, monitoring, and/or transmission (the transmission mentioned in this application is receiving or sending) of the target object by the terminal. The target object includes at least one of the following: a control channel, a control signal, a data channel, a data signal, a reference signal, a feedback signal, a feedback channel, a request message, or a response message.
The power saving sensing may be interpreted as a partial sensing mechanism, including a sensing window and a selection window.
It should be noted that, the “power saving information” mentioned in the embodiments of this application may be an SL wake up signal (WUS), which may also be referred to as: state notification information, sleep notification information, deactivation notification (off notification) information, wake notification information, activation notification (on notification) information; the details are not limited herein.
In an optional embodiment, step 301 includes:
For example, the power saving information may be configured to indicate dormancy or inactivation, and/or, during wake-up or activation, the first terminal needs to send the power saving information and indicate dormancy or inactivation. In a case that the SL is configured to indicate that “1” represents wake-up or activation, and to indicate that “0” represents dormancy or inactivation, the first terminal sends the power saving information indicating “0” to the second terminal.
In another optional embodiment, step 301 includes:
The non-transmission of the power saving information indirectly indicates that the target terminal is dormant or non-active. For example, in a case that a predefined rule defines that dormancy or inactivation is determined by default for not sending the power saving information, the power saving information does not need to be sent in a case that the first condition is satisfied. In another example, in a case that a predefined rule defines that a DRX configuration is valid or is used by default for not sending the power saving information, the power saving information does not need to be sent in a case that the first condition is satisfied. In another example, a predefined rule defines that dormancy or inactivation is determined by default in a case that no power saving information is received. In another example, a predefined rule defines that a DRX configuration is determined to be valid or used by default in a case that no power saving information is received.
In another optional embodiment, step 301 includes:
For example, the power saving information may be configured to indicate dormancy or inactivation, and/or, during wake-up or activation, the first terminal needs to send the power saving information and indicate dormancy or inactivation. In a case that the SL is configured to indicate that “1” represents wake-up or activation, and to indicate that “0” represents dormancy or inactivation, the first terminal sends the power saving information indicating “1” to the second terminal.
In another optional embodiment, step 301 includes:
For example, in a case that a predefined rule defines that wake-up or activation is determined by default for not sending the power saving information, the power saving information does not need to be sent in a case that the first condition is satisfied. In another example, in a case that a predefined rule defines that there is no DRX configuration, a DRX configuration is invalid, or a DRX configuration is not used by default for not sending the power saving information, the power saving information does not need to be sent in a case that the first condition is satisfied. In another example, a predefined rule defines that wake-up or activation is determined by default in a case that no power saving information is received. In another example, a predefined rule defines that there is no DRX configuration, a DRX configuration is invalid, or a DRX configuration is not used by default for that no power saving information is received.
In the embodiments of this application, by controlling transmission of the power saving information by a control node, or by adjusting the transmission of the power saving information based on a predefined target condition, states of the first terminal and/or the second terminal on the sidelink can be adjusted, to avoid unnecessary power consumption of the terminal, thereby achieving the purpose of power saving of the terminal.
As shown in
Step 401: a third terminal performs, based on a predefined behavior, power saving processing on at least one of the third terminal or a fourth terminal.
In an optional embodiment, the predefined behavior includes any one of the following:
Accordingly, step 401 includes:
Alternatively, step 401 includes:
For example, in a case that a predefined rule defines that dormancy or inactivation is determined by default for not sending the power saving information, the power saving information does not need to be sent. In another example, in a case that a predefined rule defines that a DRX configuration is valid or is used by default for not sending the power saving information, the power saving information does not need to be sent.
For example, in a case that a predefined rule defines that wake-up or activation is determined by default for not sending the power saving information, the power saving information does not need to be sent. In another example, in a case that a predefined rule defines that there is no DRX configuration, a DRX configuration is invalid, or a DRX configuration is not used by default for not sending the power saving information, the power saving information does not need to be sent.
To sum up, in the embodiments of this application, through the setting of the predefined rule, activation or inactivation, or dormancy or wake-up of the SL terminal may also be implemented in a case that power saving information does not need to be transmitted, so as to implement power saving of the terminal.
It should be noted that, in the power saving processing method provided in the embodiments of this application, the execution body may be a power saving processing apparatus, or a control module in the power saving processing apparatus for executing or loading the power saving processing method. In an embodiment of this application, for example, the power saving processing apparatus that performs the power saving processing method is used, to describe the power saving processing apparatus provided in this embodiment of this application.
As shown in
In an optional embodiment, in a case that the target condition includes a first condition, the first determining module includes:
In an optional embodiment, in a case that the target condition includes a first condition, the first determining module includes:
In an optional embodiment, the first condition includes at least one of the following that:
In an optional embodiment, in a case that the target condition includes a second condition, the first determining module includes:
In an optional embodiment, in a case that the target condition includes a second condition, the first determining module includes:
In an optional embodiment, the second condition includes at least one of the following that:
The third target BWP, the third target cell, or the third target carrier can be used for SL transmission, can be re-used for SL transmission, includes an SL resource, supports an SL, or has an association with a fourth target BWP, a fourth target cell, or a fourth target carrier; and the fourth target BWP, the fourth target cell, or the fourth target carrier can be used for SL transmission, can be re-used for SL transmission, includes an SL resource, or supports an SL.
In an optional embodiment, the apparatus further includes:
In an optional embodiment, the first information includes at least one of the following:
In an optional embodiment, the first information is at least one of the following:
In an optional embodiment, the first determining module and/or the second determining module are configured to:
In the embodiments of this application, by controlling transmission of the power saving information by a control node, or by adjusting the transmission of the power saving information based on a predefined target condition, states of the first terminal and/or the second terminal on the sidelink can be adjusted, to avoid unnecessary power consumption of the terminal, thereby achieving the purpose of power saving of the terminal.
It should be noted that, the power saving processing apparatus provided in this embodiment of this application is an apparatus capable of executing the foregoing power saving processing method, and all embodiments of the foregoing power saving processing method are applicable to the apparatus, and can achieve the same or similar beneficial effects.
As shown in
In an optional embodiment, the second determining module includes:
In an optional embodiment, the second determining module includes:
In an optional embodiment, the second determining module includes:
In an optional embodiment, the second determining module includes:
In the embodiments of this application, by indirectly controlling transmission of the power saving information by a control node, or by adjusting the transmission of the power saving information based on a predefined target condition, states of the first terminal and/or the second terminal on the sidelink can be adjusted, to avoid unnecessary power consumption of the terminal, thereby achieving the purpose of power saving of the terminal.
It should be noted that, the power saving processing apparatus provided in this embodiment of this application is an apparatus capable of executing the foregoing power saving processing method, and all embodiments of the foregoing power saving processing method are applicable to the apparatus, and can achieve the same or similar beneficial effects.
As shown in
In an optional embodiment, the predefined behavior includes any one of the following:
In an optional embodiment, the processing module includes:
In an optional embodiment, the processing module includes:
In the embodiments of this application, through the setting of the predefined rule, activation or inactivation, or dormancy or wake-up of the SL terminal may also be implemented in a case that power saving information does not need to be transmitted, so as to implement power saving of the terminal.
It should be noted that, the power saving processing apparatus provided in this embodiment of this application is an apparatus capable of executing the foregoing power saving processing method, and all embodiments of the foregoing power saving processing method are applicable to the apparatus, and can achieve the same or similar beneficial effects.
The power saving processing apparatus in this embodiment of this application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal. The apparatus may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA); and the non-mobile electronic device may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or an automated machine, which are not specifically limited in the embodiments of this application.
The power saving processing apparatus in this embodiment of this application may be an apparatus having an operating system. The operating system may be an Android operating system, may be an ios operating system, or may be another possible operating system, which is not specifically limited in this embodiment of this application.
The power saving processing apparatus provided in this embodiment of this application may implement various processes implemented by the method embodiments of
Optionally, as shown in
The terminal 900 includes, but is not limited to, components such as a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910.
It may be understood by those skilled in the art that the terminal 900 may further include a power supply (for example, a battery) for supplying power to various components, and the power supply may be logically connected to the processor 910 through a power management system, so as to implement functions such as managing charging or discharging, and power consumption management through the power management system. The terminal structure shown in
It should be understood that, in this embodiment of this application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042. The graphics processing unit 9041 processes image data of a still picture or a video obtained by an image capture apparatus (such as a camera lens) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061. The display panel 9061 may be configured in a form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes a touch panel 9071 and another input device 9072. The touch panel 9071 is also referred to as a touchscreen. The touch panel 9071 may include a touch detection apparatus and a touch controller. The another input device 9072 may include, but is not limited to, a physical keyboard, a function key (such as a volume control key, a switch key, or the like), a trackball, a mouse, and an operating lever, which is not described in detail herein.
In this embodiment of this application, the radio frequency unit 901 receives downlink data from a network-side device and then sends the information to the processor 910 for processing. In addition, the uplink data is sent to the network side device. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, or the like.
The memory 909 may be configured to store a software program or instructions, and various data. The memory 909 may mainly include a storage program or instruction area and a storage data area, where the storage program or instruction area may store an operating system, an application program or instructions required for at least one function (for example, a sound playback function, an image playback function, or the like). In addition, the memory 909 may include a high-speed random access memory, and may further include a non-volatile memory, where the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory, for example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.
The processor 910 may include one or more processing units. Optionally, the processor 910 may be integrated with an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application program, or instructions, and the like, and the modem processor mainly processes radio communications, for example, a baseband processor. It may be understood that the foregoing modem processor may also not be integrated into the processor 910.
The processor 910 is configured to determine, based on a target condition and/or first information, transmission of power saving information, and/or determine, based on the target condition and/or the first information, that a target terminal is dormant or wake-up, or non-active or active, where
Alternatively, the processor 910 is configured to determine, based on transmission of power saving information of the first terminal, that a target terminal is dormant or wake-up, or non-active or active, where the target terminal includes: the second terminal, and/or, the first terminal for performing sidelink communication with the second terminal.
Alternatively, the processor 910 is configured to perform, based on a predefined behavior, power saving processing on at least one of the third terminal or a fourth terminal.
In the embodiments of this application, by controlling transmission of the power saving information by a control node, or by adjusting the transmission of the power saving information based on a predefined target condition, states of the first terminal and/or the second terminal on the sidelink can be adjusted, to avoid unnecessary power consumption of the terminal, thereby achieving the purpose of power saving of the terminal.
It should be noted that, the power saving processing apparatus provided in this embodiment of this application is an apparatus capable of executing the foregoing power saving processing method, and all embodiments of the foregoing power saving processing method are applicable to the apparatus, and can achieve the same or similar beneficial effects.
An embodiment of this application further provides a non-transitory readable storage medium. The non-transitory readable storage medium stores a program or instructions. The program or instructions, when executed by a processor, cause the processor to perform the processes of the foregoing power saving processing method embodiment, and in addition, the same technical effect can be achieved, which are not repeated herein in order to avoid duplication.
The processor is the processor in electronic device described in the foregoing embodiments. The non-transitory readable storage medium includes a non-transitory computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a disk, an optical disk, or the like.
An embodiment of this application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instructions to implement the processes of the foregoing power saving processing method embodiments, and in addition, the same technical effect can be achieved, which are not repeated herein in order to avoid duplication.
An embodiment of this application further provides a computer program product, where the computer program product is stored in a non-transitory readable storage medium, and the computer program product, when executed by at least one processor, implements the processes of the foregoing embodiments of the power saving processing method, and in addition, the same technical effect can be achieved, which are not repeated herein in order to avoid duplication.
It should be understood that the chip mentioned in this embodiment of this application may also be referred to as a system on chip, a system chip, a chip system, or a system-on-a-chip.
It should be noted that, the terms “include”, “comprise”, or any other variation thereof in this specification is intended to cover a non-exclusive inclusion, so that the stated processes, methods, objects, or apparatuses including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such the processes, methods, objects, or apparatuses. Without more limitations, elements defined by the sentence “including one” does not exclude that there are still other same elements in the processes, methods, objects, or apparatuses. In addition, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may further include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved, for example, the described methods may be performed in an order different from the order described, and various steps may be added, omitted, or combined. In addition, the features described with reference to some examples can be combined in other examples.
According to the descriptions in the foregoing implementations, a person skilled in the art may clearly learn that the method according to the foregoing embodiments may be implemented by relying on software and a commodity hardware platform or by using hardware, and in most cases the former is the preferred. Based on such an understanding, the technical solutions of this application essentially, or the part contributing to the prior art, may be presented in the form of a software product. The computer software product is stored in a non-transitory storage medium (for example, a ROM/RAM, a magnetic disk, or an optical disc) including several instructions to enable a terminal (which may be a mobile phone, a computer, a server, an air conditioner, a network device, or the like) to perform the methods described in the embodiments of this application.
The embodiments of this application have been described above with reference to the accompanying drawings. This application is not limited to the embodiments described above, and the embodiments described above are merely exemplary and not limitative. Those of ordinary skill in the art may make various variations under the teaching of this application without departing from the spirit of this application and the scope of protection of the claims, and such variations shall all fall within the scope of protection of this application.
The foregoing descriptions are merely some implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in this application shall fall within the scope of protection of this application. Therefore, the scope of protection of this application shall be subject to the scope of protection of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110044778.2 | Jan 2021 | CN | national |
This application is a Bypass Continuation Application of International Application No. PCT/CN2022/070717 filed Jan. 7, 2022, and claims priority to Chinese Patent Application No. 202110044778.2 filed Jan. 13, 2021, the disclosures of which are hereby incorporated by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2022/070717 | Jan 2022 | US |
| Child | 18220929 | US |
