Patent Application
20230397189
The present application claims a priority of Chinese patent application No. 202011149169.5 and titled “data transmission method, apparatus and equipment” filed with the China Patent Office on Oct. 23, 2020, which is incorporated herein by reference in its entirety.
The present disclosure relates to the technical field of mobile communication, and in particular, to a data transmission method, an apparatus and an equipment.
In the current transmission mechanism, after the data packet is submitted to the physical layer at the Media Access Control (MAC) layer, the data packet is transmitted to the network device based on the configured grant resource, after partial transmission, the case that transmission of the data packet is stopped may occur. After the transmission of data packet is stopped, the user equipment (User Equipment, UE) will turn on the configured grant timer (Configured Grant Timer, CGT) and/or configured grant retransmission timer (CG-Retransmission Timer, CGRT) at the MAC layer.
If the network device successfully receives the data packet, in the NR-unlicensed spectrum (NR-U) scenario, the network side will feed back the Downlink Feedback Information (DFI), indicating that the data has been successfully received; If the network device cannot successfully receive, in the Industrial Internet of Things (IIoT) scenario, the network side will transmit a retransmission schedule to the UE. However, due to reasons such as the channel, the UE cannot receive the DFI or retransmission scheduling from the network side, so that the UE cannot perform data transmission until the timer expires, which will increase the transmission time delay, especially in a case that the service is an IIoT service, the increase in delay will seriously affect the performance of the service.
Embodiments of the present disclosure provide a data transmission method, an apparatus, and an equipment to solve the problem that the existing transmission mechanism increases transmission time delay and affects service performance.
In a first aspect, an embodiment of the present disclosure provides a data transmission method, applied to a user equipment, including:
Optionally, the method further comprises:
Optionally, in a case that the target scenario is detected when transmitting the first data packet at the physical layer of the user equipment, the stopping transmission of the first data packet, includes one of:
Optionally, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet at the physical layer of the user equipment, stopping transmission of the first data packet, includes:
Optionally, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet at the physical layer of the user equipment, after the stopping transmission of the first data packet, the method further includes:
Optionally, the transmission of the first data packet includes:
Optionally, the first data packet is transmitted to the network device for a first time through the first configured grant resource; the selecting, by the MAC layer of the user equipment, the second target uplink resource from at least one uplink resource, includes:
Optionally, the selecting, by the MAC layer of the user equipment, the second target uplink resource from at least one uplink resource according to at least one of the modulation and coding scheme (MCS) of the uplink resource and the reliability parameter of the uplink resource, includes one of:
Optionally, after the starting, by the MAC layer of the user equipment, the CGT and/or the CGRT, the method further includes:
In a second aspect, an embodiment of the present disclosure provides a user equipment, including a memory, a transceiver, and a processor, wherein the memory is configured for storing computer program; the transceiver is configured for sending and receiving data under control of the processor; and the processor is configured for reading the computer program in the memory and performing the following operations of:
Optionally, the processor is further configured for:
Optionally, in a case that the processor controls the physical layer of the user equipment to stop the transmission of the first data packet, the processor is specifically configured to perform one of the following methods of:
Optionally, when the processor controls the physical layer of the user equipment to stop, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet, transmission of the first data packet, the processor is specially configured for:
Optionally, after the processor controls the physical layer of the user equipment to stop, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet, transmission of the first data packet, the processor is further configured for:
Optionally, when the processor controls the MAC layer of the user equipment to transmit the first data packet, the processor is specifically configured for:
Optionally, the first data packet is transmitted to the network device for a first time through the first configured grant resource; when the processor controls the MAC layer of the user equipment to select the second target uplink resource from at least one uplink resource, the processor is specially configured for:
Optionally, the processor controls the MAC layer of the user equipment to select, according to at least one of the modulation and coding scheme (MCS) of the uplink resource and the reliability parameter of the uplink resource, the second target uplink resource from at least one uplink resource, the processor is specially configured for performing one of the following methods of:
In a third aspect, an embodiment of the present disclosure provides a data transmission apparatus, applied to a user equipment, including: a media access control (MAC) layer processing module of the user equipment and a physical layer processing module of the user equipment, where
Optionally, the physical layer processing module of the user equipment is further configured to:
Optionally, the physical layer processing module of the user equipment includes one of the following submodules:
Optionally, the first stop submodule is further configured for:
In a fourth aspect, an embodiment of the present disclosure provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps in the data transmission method described in the first aspect above are implemented.
In a fifth aspect, an embodiment of the present disclosure provides a computer program, including computer readable code, wherein the computer readable code enables, when operated on a computing processing device, the computing processing device to execute the data transmission method described in the first aspect above.
In a sixth aspect, an embodiment of the present disclosure provides a computer-readable medium, the computer program as described in the fifth aspect above is stored therein.
In the embodiment of the present disclosure, after the MAC layer of the user equipment submits the first data packet to the physical layer of the user equipment and starts the configured grant timer (CGT) and/or the configured grant retransmission timer (CGRT), in a case that the transmission of the first data packet is stopped at the physical layer of the user equipment is identified, the MAC layer of the user equipment stops the CGT and/or CGRT and transmits the first data packet after stopping CGT and/or CGRT, which can avoid performing data transmission actions after the timer expires, and ensure that the user equipment completes the data transmission in advance, thereby saving time delay.
The above description is only an overview of the technical solution of the present disclosure, in order to better understand the technical means of the present disclosure, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present disclosure more obvious and understandable, the specific embodiments of the present disclosure are enumerated below.
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the drawings that need to be used in the descriptions of the embodiments or related technologies will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the present disclosure. For those ordinarily skilled in the art, without paying creative work, other drawings may also be obtained based on these drawings.
In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are parts of the embodiments of the present disclosure, rather than all of embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those ordinarily skilled in the art without making creative efforts fall within the protection scope of the present disclosure.
The term “and/or” in the embodiments of the present disclosure describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B, which may mean three cases: A exists alone, A and B exist simultaneously, and B exists alone. The character “/” generally indicates that the contextual associated objects are an “or” relationship.
The term “plurality” in the embodiments of the present disclosure refers to two or more, and other quantifiers are similar.
Embodiments of the present disclosure provide a data transmission method and an apparatus, which are used for realizing the user equipment to complete data transmission in advance and saving time delay.
The method and the apparatus are conceived based on the same application. Since the principles of solving problems of the method and the apparatus are similar, the implementations of the apparatus and the method can be referred to each other, and the repetition will not be repeated.
In addition, the technical solutions provided by the embodiments of the present disclosure may be applicable to various systems, especially 5G systems. For example, the applicable system may be global system of mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet radio service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc. These various systems include terminal devices and network devices. The system may also include a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.
The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to users, a handheld device with a radio connection function, or other processing devices connected to a radio modem. In different systems, the name of the user equipment may be different. For example, in a 5G system, a terminal device may be called a user equipment. The radio terminal equipment can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the radio terminal equipment may be a mobile terminal equipment, such as a mobile phone (or called a “cellular” telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant, PDA) and other devices. Radio terminal equipment may also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, a remote terminal, an access terminal (access terminal), a user terminal, a user agent, and a user device, which are not limited in the embodiments of the present disclosure.
The network device involved in the embodiments of the present disclosure may be a base station, and the base station may include multiple cells that provide services for terminals. Depending on the specific application scenario, the base station can also be called an access point, or can be a device in the access network that communicates with the radio terminal device through one or more sectors on the air interface, or other names. Network devices can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as router between radio terminal device and the rest of the access network, wherein the rest of the access network can include the Internet Protocol (IP) communication network. Network devices may also coordinate attribute management for the air interface. For example, the network device involved in this embodiment of the present disclosure may be a network device (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (LTE) system, 5G base station (gNB) in the 5G network architecture (next generation system), can also be a home evolved base station (Home evolved Node B, HeNB), relay node (relay node), a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present disclosure. In some network structures, a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.
One or more antennas can be used between network devices and terminal devices for Multi Input Multi Output (MIMO) transmission, and MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO (Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.
Firstly, the existing transmission mechanism is described. For the configured grant (Configured Grant, CG), it is different from different from allocating radio resources to the UE once per time slot/transmission timing interval (Transmission Timing Interval, TTI) during dynamic scheduling (specified through the physical downlink control channel (Physical downlink control channel, PDCCH)), the configured grant allows semi-static configuration of radio resource, and the resource is periodically allocated to a specific UE. In short, the network side notifies the UE that a certain resource can be used periodically, and the location of the periodic resource can be notified through radio resource control (Radio Resource Control, RRC) signaling. The network side may also notify information such as frequency domain position, start and end time, modulation coding scheme (Modulation Coding Scheme, MCS) of resources used to the UE. In this way, the network side reduces the PDCCH notification overhead through periodic resource allocation.
The configured grant scheduling scheme is suitable for periodic service, such as VoIP (Voice Over IP, VoIP), and certain Ultra Reliable Low Latency Communications (Ultra Reliable Low Latency Communications, URLLC) services have services such as periodic control signaling, etc. The configured grant is an uplink scheduling scheme, and there are two types: type1 and type2.
In Type1: RRC allocates periodic resources, and after RRC configuration, the resources are in an activated state, that is, after receiving the RRC configured message, the UE can use the resources to transmit uplink data;
For CGT, in New Radio (NR), there is no downlink (Downlink, DL) feedback for uplink (UpLink, UL) data transmission. If the UL transmission fails, the network side transmits a retransmission scheduling command through the PDCCH. If the UL data transmission is successful, in a case that the network side feeds back the PDCCH, then the purpose of saving PDCCH overhead cannot be achieved, so a CGT is defined, and the timer is turned on after the UE transmits a data packet. If the UE receives the retransmission schedule of the Hybrid Automatic Repeat Request (HARQ) process before the CGT expires, the UE will perform the retransmission operation. If the UE does not receive the retransmission scheduling from the network side, the UE will consider the data transmission successful after the CGT expires.
For CGRT, CGRT is introduced in NR-U. This is because, in NR-U, the HARQ process identity number (Identity Document, ID) is independently selected by the UE. When the network side cannot receive the data packet of UE, retransmission scheduling cannot be performed, so the mechanism introduced in NR-U is that the network side transmits the feedback signaling DFI to the UE. However, since the NR-U channel is preemptive, the UE may not be able to receive DFI, so CGRT is introduced. This timer is turned on after the UE transmits a data packet. When the timer does not expire and the UE receives DFI (correct feedback), the UE will stop the timer. If the timer still cannot receive DFI after the timer expires, the UE will perform a retransmission operation.
In the existing transmission mechanism, in a case that the data packet of UE is submitted to the physical layer at the MAC layer, when the physical layer transmits the data packet, the current protocol data unit (Protocol Data Unit, PDU) transmission may be interrupted, for example, data transmission preemption occurs.
For example, as shown in
It can be seen that the existing transmission mechanism has the problem of increasing transmission time delay and affecting service performance. In order to solve the problem existing in the existing transmission mechanism, an embodiment of the present disclosure provides a data transmission method, an apparatus and an equipment.
The MAC layer of the user equipment first submits the first data packet to the physical layer of the user equipment, so that the physical layer of the user equipment transmits the received first data packet to a network device. After the MAC layer of the user equipment submits the first data packet to the physical layer of the user equipment, the CGT and/or the CGRT can be started.
Step 202, stopping the CGT and/or the CGRT and transmitting the first data packet after stopping the CGT and/or the CGRT, in a case that the MAC layer of the user equipment identifies that transmission of the first data packet is stopped at the physical layer of the user equipment.
After submitting the first data packet to the physical layer of the user equipment, the MAC layer of the user equipment may stop the CGT and/or the CGRT in a case that the transmission of the first data packet is stopped at the physical layer of the user equipment is identified. Specifically, in a case that CGT is started after transmitting the first data packet previously, CGT is stopped at this time, in a case that CGRT is started after transmitting the first data packet previously, CGRT is started at this time, in a case that CGRT and CGT are started after transmitting the first data packet previously, then CGRT and CGT are stopped at this time. After stopping the CGT and/or CGRT, the MAC layer of the user equipment may transmit the first data packet. The CGT and/or CGRT is stopped, and the first data packet is transmitted after stopping the CGT and/or CGRT, which can avoid performing data transmission actions after the timer expires, thereby ensuring that the user equipment completes the data transmission in advance, and saving time delay.
In the embodiment of the present disclosure, after the MAC layer of the user equipment submits the first data packet to the physical layer of the user equipment and starts the CGT and/or CGRT, in a case that the transmission of first data packet is stopped at the physical layer of the user equipment, the CGT and/or CGRT is stopped and the first data packet is transmitted after the CGT and/or CGRT stops, which can avoid performing data transmission actions after the timer expires, thereby ensuring that the user equipment completes data transmission in advance, and saving time delay.
In an optional embodiment of the present disclosure, the method further includes:
After the MAC layer of the user equipment submits the first data packet to the physical layer of the user equipment, the physical layer of the user equipment can transmit the received first data packet to the network device, in a case that the target scenario is detected when transmitting the first data packet, the physical layer of the user equipment stops the transmission of first data packet, and feeds back the notification information of stopping transmission of the first data packet to the MAC layer of the user equipment. After receiving the notification information fed back by the physical layer of the user equipment, the MAC layer of the user equipment may know that the transmission of first data packet is stopped at the physical layer of the user equipment, and at this time, the MAC layer of the user equipment may stop the CGT and/or CGRT and transmit the first data packet after stopping the CGT and/or CGRT.
In the embodiment of the present disclosure, in a case that the target scenario is detected when transmitting the first data packet, the physical layer of the user equipment stops the transmission of the first data packet to the network device and notifies the MAC layer of the user equipment, so that the MAC layer of the user equipment can know the transmission status of the first data packet in time, and then collect corresponding measures to ensure the data transmission of the user equipment and save time delay.
In an optional embodiment of the present disclosure, in a case that a target scenario is detected when transmitting the first data packet, the physical layer of the user equipment stops the transmission of the first data packet, including one of the following methods of:
The physical layer of the user equipment can stop, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet, the transmission of the first data packet to the network device, wherein the second data packet may be another data packet submitted by the MAC layer of the user equipment to the physical layer of the user equipment, or may be a data packet generated by the physical layer of the user equipment itself. That is, in the process of transmitting the first data packet to the network device by the physical layer of the user equipment, in a case that the second data packet meeting the preset condition submitted by the MAC layer of the user equipment is received, the transmission of the first data packet to the network device may be stopped. Or, during the process of transmitting the first data packet to the network device by the physical layer of the user equipment, in a case that the physical layer of the user equipment generates a second data packet meeting a preset condition, the transmission of the first data packet to the network device may be stopped.
In a case that the first indication information transmitted by a network device indicating that the transmission of the first data packet is interrupted is received when transmitting the first data packet, the physical layer of the user equipment stops transmission of the first data packet to the network device; that is, during the process of transmitting the first data packet to the network device by the physical layer of the user equipment, in a case that the first indication information transmitted by the network device indicating that the transmission of the first data packet is interrupted is received, the transmission of the first data packet to the network device may be stopped according to the first indication information transmitted by the network device.
In a case that the second indication information transmitted by the network device indicating that the user equipment changes a time slot is received when transmitting the first data packet, the physical layer of the user equipment may stop transmission of the first data packet to the network device. That is, during the process of transmitting the first data packet to the network device by the physical layer of the user equipment, in a case that the second indication information transmitted by the network device indicating that the user equipment changes a time slot is received, the transmission of the first data packet to the network device may be stopped according to the second indication information transmitted by the network device.
In the embodiment of the present disclosure, the transmission of the first data packet to the network device may be stopped based on the acquisition condition of the data packet or the instruction of the network device, so as to realize the control of stopping transmission of the first data packet according to the trigger of the user equipment or the network device.
In an optional embodiment of the present disclosure, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet at the physical layer of the user equipment, the stopping transmission of the first data packet, includes:
The data packets submitted by the MAC layer of the user equipment to the physical layer of the user equipment are all MAC PDUs, so the first data packet is the first MAC PDU, and in a case that the second data packet is a data packet submitted by the MAC layer of the user equipment to the physical layer of the user equipment, then the second data packet is a second MAC PDU, wherein the first data packet is transmitted to the network device through the first configured grant resource, the second data packet is transmitted to the network device through the first target uplink resource, the configured grant resource is selected from the uplink resource, and the configured grant resource may be used periodically to save PDCCH overhead.
In a case that the second data packet is the second MAC PDU, the transmission of the first data packet to the network device is stopped according to the second data packet meeting the preset condition, the specific process may be as follows: in a case that the physical layer of the user equipment receives the second MAC PDU submitted by the MAC layer of the user equipment when transmitting the first data packet, and the priority of the second MAC PDU is higher than the priority of the first data packet (the first MAC PDU), the transmission of the first data packet may be stopped. The specific process may also be as follows: in a case that the physical layer of the user equipment receives the second MAC PDU submitted by the MAC layer of the user equipment when transmitting the first data packet, and the priority of the first target uplink resource configured for transmitting the second MAC PDU is higher the priority of the first configured grant resource configured for transmitting the first data packet, then the transmission of the first data packet may be stopped. The specific process may also be as follows: in a case that the physical layer of the user equipment receives the second MAC PDU submitted by the MAC layer of the user equipment when transmitting the first data packet, and the priority of the first target uplink resource configured for transmitting the second MAC PDU is higher the priority of the first configured grant resource configured for transmitting the first data packet, and simultaneously, the priority of the second MAC PDU is higher than the priority of the first data packet, then the transmission of the first data packet may be stopped.
In the case that the second data packet is uplink control information (Uplink Control Information, UCI) generated by the physical layer of the user equipment, the transmission of the first data packet to the network device can be stopped according to the second data packet meeting the preset condition, and the specific process may be as follows: in a case that the physical layer of the user equipment generates UCI when transmitting the first data packet, and the priority of the UCI generated by the physical layer of the user equipment is higher than the priority of the first data packet (the first MAC PDU), then the transmission of the first data packet may be stopped. The specific process may also be as follows: in a case that the physical layer of the user equipment generates UCI when transmitting the first data packet, and the priority of the first target uplink resource configured for transmitting UCI is higher than the priority of the first configured grant resource configured for transmitting the first data packet, then the transmission of the first data packet may be stopped. The specific process may also be as follows: in a case that the physical layer of the user equipment generates UCI when transmitting the first data packet, and the priority of the first target uplink resource configured for transmitting the UCI generated by the physical layer of the user equipment is higher than the priority of the first configured grant resource configured for transmitting the first data packet, and simultaneously, the priority of the UCI generated by the physical layer of the user equipment is higher than the priority of the first data packet, then the transmission of the first data packet may be stopped.
In the embodiment of the present disclosure, the stopping transmission of the first data packet may be triggered based on the priority of the second MAC PDU and/or the priority of the first target uplink resource configured for transmitting the second MAC PDU, or, the stopping transmission of the first data packet may be triggered based on the priority of the UCI and/or the priority of the first target uplink resource configured for transmitting the UCI, so as to trigger the stopping transmission of the first data packet according to the data and/or uplink resource with higher priority.
In an optional embodiment of the present disclosure, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet at the physical layer of the user equipment, after the stopping transmission of the first data packet, the method further comprises:
For the situation that the physical layer of the user equipment obtains the second data packet meeting the preset condition when transmitting the first data packet, the physical layer of the user equipment may transmit the second data packet to the network device after stopping the transmission of the first data packet. Here, the second data packet meeting the preset condition is that: the priority of the data packet is higher than the priority of the first data packet and/or the priority of the uplink resource configured for transmitting the data packet is higher than the priority of the uplink resource configured for transmitting the first data packet. By transmitting the second data packet to the network device, the physical layer of the user equipment may transmit a data packet with a higher priority and/or transmit a data packet with a higher priority of uplink resource.
In an optional embodiment of the present disclosure, the transmission of the first data packet includes:
When the MAC layer of the user equipment needs to select the second target uplink resource from at least one uplink resource first when transmitting the first data packet, after the second target uplink resource is determined, the user equipment can use the second target uplink resource to transmit the first data packet buffered in the MAC layer of the user equipment to the network device. Specifically, after the MAC layer of the user equipment determines the second target uplink resource, the physical layer of the user equipment transmits the first data packet buffered in the MAC layer of the user equipment to the network device through the second target uplink resource determined by the MAC layer of the user equipment.
In an optional embodiment of the present disclosure, the first data packet is transmitted to the network device for a first time through the first configured grant resource; the selecting, by the MAC layer of the user equipment, the second target uplink resource from at least one uplink resource, includes:
In a case that the first data packet is transmitted to the network device for the first time through the first configured grant resource, the MAC layer of the user equipment selects the second target uplink resource from at least one uplink resource, the second target uplink resource may be selected from at least one uplink resource according to the MCS of the uplink resource, or the second target uplink resource may be selected from at least one uplink resource according to the reliability parameter of the uplink resource, or the second target uplink resource may be selected from at least one uplink resource according to the MCS of the uplink resource and the reliability parameter of the uplink resource. The second target uplink resource may be selected based on at least one of the MCS of the uplink resource and the reliability parameter of the uplink resource, which enriches the selection manners of the second target uplink resource.
The selecting, by the MAC layer of the user equipment, the second target uplink resource from at least one uplink resource according to at least one of the modulation and coding scheme (MCS) of the uplink resource and the reliability parameter of the uplink resource, includes one of:
The MAC layer of the user equipment selects an uplink resource whose MCS is lower than or equal to the MCS corresponding to the first configured grant resource from at least one uplink resource, and uses the selected uplink resource as the second target uplink resource, in a case that at least two uplink resources meeting the requirements may be selected according to the MCS, the uplink resource selected for the first time may be determined as the second target uplink resource, or the second target uplink resource may be determined from at least two uplink resources meeting the requirements based on a preset policy.
The MAC layer of the user equipment selects an uplink resource whose reliability parameter is higher than or equal to the reliability parameter corresponding to the first configured grant resource from at least one uplink resource, and uses the selected uplink resource as the second target uplink resource, in a case that at least two uplink resources meeting the requirements may be selected according to the reliability parameters, the uplink resource selected for the first time may be determined as the second target uplink resource, or the second target uplink resource may be determined from at least two uplink resources meeting requirements based on a preset policy.
The MAC layer of the user equipment selects an uplink resource whose MCS is lower than or equal to the MCS corresponding to the first configured grant resource and whose reliability parameter is higher than or equal to the reliability parameter corresponding to the first configured grant resource from at least one uplink resource, and uses the selected uplink resource as the second target uplink resource, in a case that at least two uplink resources meeting the requirements can be selected according to the MCS and the reliability parameters, the uplink resource selected for the first time can be determined as the second target uplink resource, or the second target uplink resource may be determined from at least two uplink resources meeting requirements based on a preset policy.
It should be noted that due to the reduced MCS, the reliability of the uplink resource is higher, so the uplink resource whose MCS is lower than or equal to the MCS corresponding to the first configured grant resource is selected. The reliability parameter may be a parameter configured by the network device for uplink resource. The larger the reliability parameters is, the higher the reliability is. For example, it may be some level parameters, 0, 1, 2, 3, etc., wherein 0 means the lowest reliability, and the larger the number is, and the higher the reliability is.
In the embodiment of the present disclosure, the second target uplink resource is selected from the uplink resources based on at least one of the MCS and the reliability parameter, which can realize a selection for a resource with high reliability on the basis of enriching the selection manners of the second target uplink resource.
In an optional embodiment of the present disclosure, after the starting, by the MAC layer of the user equipment, the CGT and/or the CGRT, the method further includes:
After starting the CGT and/or CGRT, the MAC layer of the user equipment needs to set the HARQ process to a non-suspended state capable of transmitting, and data buffered in HARQ has been transmitted may be represented by setting the state of the HARQ process. After stopping CGT and/or CGRT, the MAC layer of the user equipment needs to set the HARQ process to the suspended state in which data to be transmitted is buffered, and data to be transmitted is buffered in HARQ may be represented by setting the state of the HARQ process, after setting the HARQ process to a suspended state in which data to be transmitted is buffered, the buffered first data packet may be transmitted.
The data transmission method provided by the embodiments of the present disclosure will be described below through two specific processes. Regarding the situation that the physical layer of the user equipment obtains the second data packet meeting the preset condition when transmitting the first data packet, the specific process of the data transmission method is shown in
Step 301, the MAC layer of the user equipment generates a first MAC PDU, submits the first MAC PDU to the physical layer of the user equipment, and turns on the CGT and/or CGRT, and sets the HARQ process state to a non-suspended state capable of transmitting.
Step 302, the physical layer of the user equipment transmits the first MAC PDU to the network device through the first configured grant resource.
Step 303, in a case that the second data packet submitted by the MAC layer of the user equipment is received or the second data packet is generated at the physical layer of the user equipment, the physical layer of the user equipment stops the transmission of the first MAC PDU, and executes the transmission of the second data packet, wherein the priority of the second data packet is higher than the priority of the first MAC PDU and/or the priority of the first target uplink resource configured for transmitting the second data packet is higher than the priority of the first configured grant resource configured for transmitting the first MAC PDU, and the second data packet is the second MAC PDU or UCI.
Step 304, the physical layer of the user equipment feeds back the notification information of stopping transmission of the first MAC PDU to the MAC layer of the user equipment.
Step 305, the MAC layer of the user equipment determines that the transmission of first MAC PDU is stopped at the physical layer of the user equipment according to the notification information, stops the CGT and/or CGRT, and sets the HARQ process to a suspended state in which data to be transmitted is buffered.
Step 306, the MAC layer of the user equipment selects the second target uplink resource, and transmits the first MAC PDU on the second target uplink resource.
The transmission mechanism corresponding to the above-mentioned implementation process can be referred in
For the case wherein the physical layer of the user equipment receives the first indication information indicating that the transmission of the first data packet is interrupted or the second indication information transmitted by the network device indicating the user equipment changes the time slot when transmitting the first data packet, the specific process of the data transmission method is shown in
Step 501, the MAC layer of the user equipment generates a first MAC PDU, submits the first MAC PDU to the physical layer of the user equipment, and turns on the CGT and/or CGRT, and sets the HARQ process state to a non-suspended state capable of transmitting.
Step 502, the physical layer of the user equipment transmits the first MAC PDU to the network device through the first configured grant resource.
Step 503, in a case that the physical layer of the user equipment receives the first indication information transmitted by network device indicating that the transmission of the first MAC PDU is interrupted or receives the second indication information transmitted by the network device indicating the user equipment changes the time slot, the transmission of the first MAC PDU is stopped.
Step 504, the physical layer of the user equipment feeds back the notification information of stopping transmission of the first MAC PDU to the MAC layer of the user equipment.
Step 505, the MAC layer of the user equipment determines that the transmission of first MAC PDU is stopped at the physical layer of the user equipment according to the notification information, stops the CGT and/or CGRT, and sets the HARQ process to a suspended state in which data to be transmitted is buffered.
Step 506, the MAC layer of the user equipment selects the second target uplink resource, and transmits the first MAC PDU on the second target uplink resource.
The transmission mechanism corresponding to the implementation process may also be shown in
The above is the overall implementation process of the data transmission method provided by the embodiment of the present disclosure. After the MAC layer of the user equipment submits the first data packet to the physical layer of the user equipment and starts the CGT and/or CGRT, in a case that the transmission of first data packet is stopped at the physical layer of the user equipment is identified, stopping the CGT and/or the CGRT to stop and transmit the first data packet can avoid performing the data transmission action after the timer expires and ensure that the user equipment completes the data transmission in advance to save time delay. Further, the present disclosure can realize the control of stopping transmission of the first data packet according to the trigger of the user equipment or the network equipment, and can also realize the selection of highly reliable resources on the basis of enriching the selection manners of the second target uplink resource.
The data transmission method provided by the embodiment of the present disclosure is described above, and the data transmission apparatus provided by the embodiment of the present disclosure will be described below with reference to the drawings.
Referring to
Optionally, the physical layer processing module of the user equipment is further configured to:
Optionally, the physical layer processing module of the user equipment includes one of the following submodules:
Optionally, the first stop submodule is further configured for:
Optionally, the physical layer processing module of the user equipment further includes:
Optionally, the second processing submodule includes:
Optionally, the first data packet is transmitted to the network device for the first time through the first configured grant resource; the selection unit is further configured to:
Optionally, the selection unit includes one of the following subunits:
It should be noted that the division of the modules (units) in the embodiment of the present disclosure is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions used for enabling a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage media includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes.
What needs to be explained here is that the above-mentioned apparatus provided by the embodiment of the present disclosure can realize all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect, parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
An embodiment of the present disclosure also provides a user equipment, as shown in
Optionally, the processor 703 is further configured for:
Optionally, in a case that the processor 703 controls the physical layer of the user equipment to stop the transmission of the first data packet, the processor is specifically configured to perform one of the following methods of:
Optionally, when the processor 703 controls the physical layer of the user equipment to stop, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet, transmission of the first data packet, the processor is specially configured for:
Optionally, after the processor 703 controls the physical layer of the user equipment to stop, in a case that the second data packet meeting the preset condition is obtained when transmitting the first data packet, transmission of the first data packet, the processor is further configured for:
Optionally, when the processor 703 controls the MAC layer of the user equipment to transmit the first data packet, the processor is specifically configured for:
Optionally, the first data packet is transmitted to the network device for a first time through the first configured grant resource; when the processor 703 controls the MAC layer of the user equipment to select the second target uplink resource from at least one uplink resource, the processor is specially configured for:
Optionally, the processor 703 controls the MAC layer of the user equipment to select, according to at least one of the modulation and coding scheme (MCS) of the uplink resource and the reliability parameter of the uplink resource, the second target uplink resource from at least one uplink resource, the processor is specially configured for performing one of the following methods of:
Optionally, after the processor 703 controls the MAC layer of the user equipment to start the CGT and/or the CGRT, the processor is further configured for:
In
The processor 703 is responsible for managing the bus architecture and general processing, and the memory 701 can store data used by the processor 703 when performing operations.
The processor 703 may be a central processor (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), and the processor can also use a multi-core architecture.
The processor is configured for executing any one of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.
What needs to be explained here is that the above-mentioned device provided by the embodiment of the present disclosure can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect. Parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
An embodiment of the present disclosure also provides a processor-readable storage medium, wherein a computer program is stored in the processor-readable storage medium, and the computer program is configured for enabling the processor to execute the data transmission method.
The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
An embodiment of the present disclosure also provides a computer program, including computer readable codes, which enables, when the computer readable codes are run on a computing processing device, the computing processing device to execute the above-mentioned data transmission method.
Those skilled in the art should understand that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to magnetic disk storage, optical storage, etc.) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each procedure and/or block in the flowchart and/or block diagrams, and combinations of procedures and/or blocks in the flowchart and/or block diagrams can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a general-purpose computer, special-purpose computer, embedded processor, or processor of other programmable data processing equipment to generate a machine, such that instructions executed by the processor of the computer or other programmable data processing equipment produce an apparatus for realizing the functions specified in one or more procedures of a flowchart and/or one or more blocks of a block diagram.
These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product including instruction device, the instruction device realizes the function specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
These processor-executable instructions can also be loaded onto a computer or other programmable data processing device, which enables a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide the steps for implementing the function specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.
The various component embodiments of the present disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all functions of some or all components in the computing processing device according to the embodiments of the present disclosure. The present disclosure can also be implemented as a device or apparatus program (eg, computer program and computer program product) for performing a part or all of the methods described herein. Such a program realizing the present disclosure may be stored on a computer-readable medium, or may have the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.
For example,
Reference herein to “one embodiment,” “an embodiment,” or “one or more embodiments” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Additionally, it should be noted that examples of the word “in one embodiment” herein do not necessarily all refer to the same embodiment.
In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present disclosure may be practiced without these specific details. In some examples, in order not to obscure the understanding of the present disclosure, well-known methods, structures and techniques have not been shown in detail.
In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word “comprising” does not exclude the presence of elements or steps not listed in a claim. The word “a” or “an” preceding an element does not exclude the presence of a plurality of such elements. The disclosure can be implemented by means of hardware comprising several different elements, and by means of a suitably programmed computer. In a unit claim enumerating several apparatuses, several of these apparatuses can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.
Finally, it should be noted that: the above-mentioned embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments in the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011149169.5 | Oct 2020 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/123427 | 10/13/2021 | WO |
