Patent Application
20240422644
This application pertains to the field of communication technologies, and specifically, to a radio link failure processing method and apparatus, a communication device, and a storage medium.
In the related art, UE may monitor quality of a radio link. When the quality of the radio link becomes unable to meet a minimum communication quality requirement of the UE, the UE may determine that the radio link is unavailable, that is, determine that the radio link fails; and reselect a cell and reestablish a radio link connection. This technology related to a radio link failure may be applied to a layer 1 forwarding node. However, due to characteristics of the layer 1 forwarding node as a repeater node, after a radio link failure occurs in the layer 1 forwarding node, service interruption time of UE served by the layer 1 forwarding node is long.
According to a first aspect, a radio link failure processing method is provided, and includes:
According to a second aspect, a radio link failure processing method is provided, and includes:
According to a third aspect, a radio link failure processing method is provided, and includes:
According to a fourth aspect, a radio link failure processing apparatus is provided and applied to a first base station, and includes:
According to a fifth aspect, a radio link failure processing apparatus is provided and applied to a second base station, and includes:
According to a sixth aspect, a radio link failure processing apparatus is provided and applied to a layer 1 forwarding node, and includes:
According to a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instructions capable of running on the processor. When the program or the instructions are executed by the processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented, or the steps of the method according to the third aspect are implemented.
According to an eighth aspect, a network-side device is provided, and includes a processor and a communication interface. For example, when the network-side device is a first base station, the communication interface is configured to: receive a radio link connection establishment request from a layer 1 forwarding node, and obtain first information based on the radio link connection establishment request; when the network-side device is a second base station, the communication interface is configured to: receive a first request from a first base station, and send first information to the first base station, where the first information includes at least one of the following: context information of an MT unit of a layer 1 forwarding node, context information of a forwarding unit of a layer 1 forwarding node, topology information of a forwarding network in which a layer 1 forwarding node is located, information about a list of UEs served by a layer 1 forwarding node, and context information of all or some UEs served by a layer 1 forwarding node; or when the network-side device is a layer 1 forwarding node, the processor is configured to: determine that a radio link failure occurs, and perform a first operation. The first operation includes at least one of the following: selecting a target cell according to a preset rule; during radio link connection reestablishment, sending second information to a target base station, where the second information includes at least one of the following: an identifier of an MT unit of the layer 1 forwarding node and an identifier of the layer 1 forwarding node; stopping forwarding behavior of a forwarding unit of the layer 1 forwarding node; and after a target cell is selected, forwarding a signal of the target cell by using a forwarding unit of the layer 1 forwarding node.
According to a ninth aspect, a communication system is provided, and includes at least two of a first base station, a second base station, and a layer 1 forwarding node. The first base station may be configured to perform the steps of the radio link failure processing method according to the first aspect, the second base station may be configured to perform the steps of the radio link failure processing method according to the second aspect, and the layer 1 forwarding node may be configured to perform the steps of the radio link failure processing method according to the third aspect. The first base station is a serving base station after a radio link failure occurs in the layer 1 forwarding node, and the second base station is a serving base station before the radio link failure occurs in the layer 1 forwarding node.
According to a tenth aspect, a readable storage medium is provided. The readable storage medium stores a program or instructions. When the program or the instructions are executed by a processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented, or the steps of the method according to the third aspect are implemented.
According to an eleventh aspect, a chip is provided. 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 steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect.
According to a twelfth aspect, a computer program/program product is provided. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor, to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect.
The technical solutions in embodiments of this application are clearly described in the following with reference to accompanying drawings in embodiments of this application. Apparently, the described embodiments are some rather than all of embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of this application fall within the protection scope of this application.
In the specification and the claims of this application, terms such as “first” and “second” are used to distinguish between similar objects rather than to describe a specific sequence or order. It should be understood that terms used in this way are exchangeable in a proper case, so that embodiments of this application can be implemented in an order different from the order illustrated or described herein. The objects distinguished by “first” and “second” are usually of a same category, and a quantity of the objects is not limited. For example, there may be one or more first objects. In addition, in the specification and the claims, “and/or” indicates at least one of connected objects, and the character “/” usually indicates an “or” relationship between associated objects.
It should be noted that technologies described in the embodiments of this application are not limited to a long term evolution (LTE)/LTE-advanced (LTE-Advanced, LTE-A) system, and may further be applied to 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. Terms “system” and “network” in the embodiments of this application are usually used interchangeably. The described technologies may be applied to the systems and radio technologies mentioned above, and may also be applied to other systems and radio technologies. A new radio (NR) system is described in the following descriptions for example purposes, and NR terms are used in most of the following descriptions. However, the technologies may also be applied to applications other than an NR system application, for example, a 6th generation (6G) communication system.
To facilitate understanding of the embodiments of this application, the following content is described first.
In the embodiments of this application, a layer 1 forwarding node is controlled by a network, is a layer 1 node configured to forward radio frequency signals, and may be a reconfigurable intelligent surface (RIS) node or a network controlled repeater (NCR) node. An RIS node is implemented in different manners, and may be modeled as a mobile terminal (MT) unit and a reflection surface unit (RSU).
A reflection effect of the RIS-RSU may bring about a plurality of impacts, as described in the following.
(1) Valid reflection: Under control of the base station, a target signal is reflected in a direction of a target UE, so that a valid signal received by the target UE is strengthened.
(2) Interference reflection: In a case that signals are not scheduled or reflected by the base station, all received signals are reflected in a direction in which a current reflecting array points, causing interference.
(3) Out-of-band reflection: A band outside a target carrier bandwidth is reflected, causing interference.
Optionally, the base station may provide a service to the UE through the RIS node. The RIS node is configured to expand coverage of the base station or provide coverage of a shadow area. The base station may control a direction of a reflected beam of the RIS node to point to the target UE. This means that the base station may know which RIS node provides a reflection service for UE. For the UE for which the service is provided, the most important is link quality. As for whether radio signals are sent and received directly between the base station and the UE or whether radio signals are forwarded through the RIS node between the base station and the UE, the UE does not necessarily know. In a reflection process, the RIS node forwards, by means of a large quantity of reflector antennas on the reflection panel and reflection beamforming, a signal from the base station to the UE by using a reflected beam, to enhance a link gain and adjust a signal propagation direction.
Optionally, an NCR node, which is a layer 1 forwarding node, may also be referred to as a smart repeater. The NCR node is configured to expand a coverage area of a cell, including receiving and amplifying a downlink signal from an upstream base station to increase strength of the signal that reaches UE, and receiving and amplifying an uplink signal from the UE to increase strength of the uplink signal from the UE to the upstream base station. The NCR node may accept control from the upstream base station, that is, the base station may control transmit parameters of the smart repeater, such as a switch and a transmit beam of the NCR node, so as to improve operation efficiency of the repeater and reduce interference. A network structure shown in
Similar to the RIS node, the NCR node is connected to the base station and controlled by the base station. To be specific, the base station sends control information to the NCR node through the MT of the NCR node, and controls radio frequency RF uplink and downlink power/amplification factor, a beam parameter, uplink and downlink configuration, and the like that are of the NCR node. Unlike the RIS node, the RU unit of the NCR node is an active signal amplifier, which may amplify and send a received signal.
The RIS node mainly operates at a high frequency, but a high-frequency radio wave has a weak diffraction capability. Therefore, when an environment changes, there is a high probability that a radio wave propagation link is blocked. It is necessary to optimize a process to reduce, when an RLF occurs, service interruption time of UE served by the RIS node.
Optionally, in the following embodiments of this application, a forwarding unit may be the RIS-RSU unit of the RIS node, or may be the RU unit of the NCR node; and an MT unit may be the MT of the RIS node, or may be the MT unit of the NCR node. This is not limited.
Optionally, scenarios to which the embodiments of this application are applicable include but are not limited to Reconfigurable Intelligent Surface (RIS) deployment or a Network Controlled Repeater (NCR) scenario, for example, mainly in the 5G advanced field and the 6G field.
Optionally, a forwarding operation of the layer 1 forwarding node mentioned in the embodiments of this application includes that the NCR node amplifies and transmits a received target radio signal by using a radio frequency device, or the RIS node reflects a collected target signal by using a reflection panel.
With reference to the accompanying drawings, the following describes, in detail based on some embodiments and application scenarios thereof, a radio link failure processing method and apparatus, a communication device, and a storage medium that are provided in the embodiments of this application.
Step 41: The first base station receives a radio link connection establishment request from the layer 1 forwarding node.
After a radio link failure occurs, the layer 1 forwarding node may reselect a cell, and initiate a radio link connection establishment request to a base station to which the selected target cell belongs.
Step 42: The first base station obtains first information based on the radio link connection establishment request.
In this embodiment, the first information may include at least one of the following:
In this way, by obtaining the context information of the MT unit of the layer 1 forwarding node, the context information of the forwarding unit of the layer 1 forwarding node, and/or the topology information of the forwarding network in which the layer 1 forwarding node is located, the first base station may be enabled to obtain the information related to the layer 1 forwarding node, and use the information to configure the layer 1 forwarding node, thereby reducing time for radio link connection reestablishment performed after the radio link failure occurs in the layer 1 forwarding node, and optimizing a reestablishment process. By obtaining the information about the list of the UEs served by the layer 1 forwarding node and/or the context information of the all or some UEs served by the layer 1 forwarding node, the first base station may be enabled to obtain the information related to the UEs served by the layer 1 forwarding node, and use the information to configure the UEs, thereby reducing radio link connection reestablishment time of the UEs served by the layer 1 forwarding node, and thus reducing service interruption time of the UEs.
In some embodiments, the base station to which the target cell selected by the layer 1 forwarding node after the radio link failure occurs belongs is the first base station, which may be a serving base station before the radio link failure occurs in the layer 1 forwarding node, or may be a new serving base station. In a case that the first base station is the serving base station before the radio link failure occurs in the layer 1 forwarding node, the first base station may obtain the first information based on storage of the first base station. In a case that the first base station is a new serving base station, the first base station may obtain the first information from the serving base station used before the radio link failure occurs in the layer 1 forwarding node.
Optionally, the obtaining first information based on the radio link connection establishment request may include sending, by the first base station, a first request to the second base station. The first request is used to obtain the first information, and the second base station is the serving base station before the radio link failure occurs in the layer 1 forwarding node.
In some embodiments, the first request is optionally a context request.
Optionally, the first request may include second information. The second information includes at least one of the following: an identifier of the MT unit of the layer 1 forwarding node and an identifier of the layer 1 forwarding node. This can help the second base station identify the layer 1 forwarding node.
Optionally, before sending the first request to the second base station, the first base station may receive the second information from the layer 1 forwarding node, so as to initiate the first request by using the received second information.
Optionally, the obtaining first information based on the radio link connection establishment request may include obtaining, by the first base station, the first information based on the radio link connection establishment request and the second information. For example, the second information may be carried in the radio link connection establishment request, or sent separately.
In some embodiments, before sending a context request to the second base station, the first base station may receive the second information from the layer 1 forwarding node. The second information includes the at least one of the following: the identifier of the MT unit of the layer 1 forwarding node and the identifier of the layer 1 forwarding node. Then, the first base station may send the context request to the second base station based on the received second information. In this case, the context request includes the second information and is used to request the context information of the layer 1 forwarding node. To be specific, when the selected target cell belongs to the first base station that is different from the second base station, the layer 1 forwarding node may send the identifier of the MT unit of the layer 1 forwarding node, for example, a cell radio network temporary identifier (C-RNTI), and/or the identifier (ID) of the layer 1 forwarding node to the first base station during radio link connection reestablishment. After that, the first base station may send the received C-RNTI and/or ID of the layer 1 forwarding node to the second base station through the context request, to request the context information of the layer 1 forwarding node. After receiving the context request that is based on the C-RNTI and/or the ID of the layer 1 forwarding node, the second base station sends the context information of the MT unit and/or the context information of the forwarding unit to the first base station.
In some other embodiments, during radio link connection reestablishment between the layer 1 forwarding node and the first base station, the first base station may send, to the second base station, a context request about the UEs served by the layer 1 forwarding node. Then, the second base station may determine the list of the UEs served by the layer 1 forwarding node, and push the context information of the all or some UEs to the first base station.
In some other embodiments, when the layer 1 forwarding node reconnects to the first base station, and the second base station receives the context request about the layer 1 forwarding node from the first base station, the second base station may determine the list of the UEs served by the layer 1 forwarding node, and proactively push the context information of the all or some UEs to the first base station.
Optionally, in addition to being used as a context of ordinary UE, the context information of the MT unit may include at least one of the following:
Optionally, the context information of the forwarding unit may include at least one of the following:
Optionally, the capability information of the forwarding unit may include at least one of the following:
It may be understood that the foregoing (1) to (4) are mainly applicable to a forwarding unit of an RIS node, and the foregoing (5) and (6) are mainly applicable to a forwarding unit of an NCR node.
Optionally, the configuration information of the forwarding unit may include at least one of the following:
Optionally, the processing delay information of the layer 1 forwarding node is, for example, configuration information of a delay from reception of a reflected beam-controlling PDCCH to generation of a reflected beam by the layer 1 forwarding node.
Optionally, the topology information of the forwarding network in which the layer 1 forwarding node is located includes at least one of the following:
In some embodiments, the all or some context information of the upstream layer 1 forwarding node of the layer 1 forwarding node may include: all or some context information of an MT unit of the upstream layer 1 forwarding node, and/or all or some context information of a forwarding unit of the upstream layer 1 forwarding node. For the context information of the MT unit and the forwarding unit, refer to the foregoing content. Details are not described herein again.
In some other embodiments, the all or some context information of the downstream layer 1 forwarding node of the layer 1 forwarding node may include: all or some context information of an MT unit of the downstream layer 1 forwarding node, and/or all or some context information of a forwarding unit of the downstream layer 1 forwarding node. For the context information of the MT unit and the forwarding unit, refer to the foregoing content. Details are not described herein again.
Optionally, in a case that the layer 1 forwarding node has the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node, the first information may further include at least one of the following:
It may be understood that the context information of the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node is similar to the foregoing context information of the layer 1 forwarding node, reference may be made to the foregoing content, and details are not described herein again; the capability information of the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node is similar to the foregoing capability information of the layer 1 forwarding node, reference may be made to the foregoing content, and details are not described herein again; and the topology information of the forwarding network in which the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node are/is located is similar to the foregoing topology information of the forwarding network in which the layer 1 forwarding node is located, reference may be made to the foregoing content, and details are not described herein again.
Optionally, the context information of the all or some UEs may include first indication information, where the first indication information is used to indicate the identifier of the layer 1 forwarding node. Alternatively, in a case that the first information includes the context information of the all or some UEs, the first information may further include second indication information, where the second indication information is used to indicate the identifier of the layer 1 forwarding node. In other words, the UE context information pushed by the second base station may include an indication parameter, indicating the ID information of the layer 1 forwarding node that serves the UEs; or when the UE context information is pushed, an indication parameter may be added, indicating the ID information of the layer 1 forwarding node that serves the UEs. This may help the first base station learn of the layer 1 forwarding node that serves the UEs.
Optionally, the context information of the all or some UEs may include parameter information of a forwarded beam used for serving the all or some UEs, including a reflected beam serial number, a horizontal reflection angle, a vertical reflection angle, and the like. The forwarded beam used for serving the all or some UEs may be understood as follows: The forwarded beam is used to transmit information to the corresponding UEs.
Optionally, during establishment of a radio link connection between the layer 1 forwarding node and the first base station, after receiving a radio link connection request from first UE, the first base station may first determine whether context information of the first UE has been received from the second base station. Then, if the context information of the first UE has been received, the first UE is configured based on the context information of the first UE; or if the context information of the first UE is not received, the context information of the first UE is requested from the second base station, so that the first UE is configured by using the requested context information. In other words, in a case that the first base station has received the context information of the first UE, the first base station configures the first UE based on the context information of the first UE; or in a case that the first base station does not receive the context information of the first UE, the first base station requests the context information of the first UE from the second base station, and configures the first UE based on the context information of the first UE.
Optionally, in a case that the first information does not include the context information of the all or some UEs, when the first base station requires context information of second UE served by the layer 1 forwarding node, the first base station may request the context information of the second UE from the second base station, so as to configure the second UE by using the requested context information.
In some embodiments, the second base station may send, to the first base station, only the information about the list of the UEs served by the layer 1 forwarding node (for example, a C-RNTI/I-RNTI list). After that, when requiring context information of related UE, the first base station requests to obtain the context information of the related UE from the second base station.
Step 51: The second base station receives a first request from a first base station.
In this embodiment, the first base station is a serving base station after the radio link failure occurs in the layer 1 forwarding node.
Step 52: The second base station sends first information to the first base station.
In this embodiment, the first information may include at least one of the following:
topology information of a forwarding network in which the layer 1 forwarding node is located, which is applicable to a scenario in which there are a plurality of hops of layer 1 forwarding nodes, especially RIS nodes included;
information about a list of UEs served by the layer 1 forwarding node; and
In this way, through sending, to the first base station, of the context information of the MT unit of the layer 1 forwarding node, the context information of the forwarding unit of the layer 1 forwarding node, and/or the topology information of the forwarding network in which the layer 1 forwarding node is located, the first base station may be enabled to obtain the information related to the layer 1 forwarding node, and use the information to configure the layer 1 forwarding node, thereby reducing time for radio link connection reestablishment performed after the radio link failure occurs in the layer 1 forwarding node, and optimizing a reestablishment process. Through sending, to the first base station, of the information about the list of the UEs served by the layer 1 forwarding node and/or the context information of the all or some UEs served by the layer 1 forwarding node, the first base station may be enabled to obtain the information related to the UEs served by the layer 1 forwarding node, and use the information to configure the UEs, thereby reducing radio link connection reestablishment time of the UEs served by the layer 1 forwarding node, and thus reducing service interruption time of the UEs.
Optionally, the first request includes second information, and the second information includes at least one of the following: an identifier of the MT unit of the layer 1 forwarding node and an identifier of the layer 1 forwarding node.
In some embodiments, the first request is optionally a context request. For example, when a selected target cell belongs to the first base station that is different from the second base station, the layer 1 forwarding node may send the identifier of the MT unit of the layer 1 forwarding node, for example, a C-RNTI, and/or the ID of the layer 1 forwarding node to the first base station during radio link connection reestablishment. After that, the first base station may send the received C-RNTI and/or ID of the layer 1 forwarding node to the second base station through a context request, to request the context information of the layer 1 forwarding node. After receiving the context request that is based on the C-RNTI and/or the ID of the layer 1 forwarding node, the second base station sends the context information of the MT unit and/or the context information of the forwarding unit to the first base station.
Optionally, the context information of the MT unit may include at least one of the following:
Optionally, the context information of the forwarding unit may include at least one of the following:
Optionally, the capability information of the forwarding unit may include at least one of the following:
Optionally, the configuration information of the forwarding unit may include at least one of the following:
Optionally, the topology information of the forwarding network in which the layer 1 forwarding node is located may include at least one of the following:
Optionally, in a case that the layer 1 forwarding node has the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node, the first information may further include at least one of the following:
Optionally, the context information of the all or some UEs includes first indication information, where the first indication information is used to indicate the identifier of the layer 1 forwarding node. Alternatively, in a case that the first information includes the context information of the all or some UEs, the first information further includes second indication information, where the second indication information is used to indicate the identifier of the layer 1 forwarding node.
Optionally, the context information of the all or some UEs includes parameter information of a forwarded beam used for serving the all or some UEs.
Step 61: The layer 1 forwarding node determines that a radio link failure occurs.
In this embodiment, the layer 1 forwarding node may monitor quality of a radio link. When the quality of the radio link becomes unable to meet a minimum communication quality requirement of the layer 1 forwarding node, the radio link is determined to be unavailable, that is, the radio link is determined to fail. After determining that the radio link fails, the layer 1 forwarding node may reselect a cell and reestablish a radio link connection.
Step 62: The layer 1 forwarding node performs a first operation.
Optionally, the first operation may include at least one of the following:
Optionally, the preset rule includes at least one of the following:
The second base station is the serving base station before the radio link failure occurs in the layer 1 forwarding node, and the first cell is a serving cell before the radio link failure occurs in the layer 1 forwarding node. Thus, selecting the target cell according to the preset rule may prevent, when the layer 1 forwarding node serves UE, a cell handover for the UE and prevent a cell handover between base stations for the UE, thereby preventing an excessively long time of a service interruption of the UE.
In some embodiments, after the radio link failure occurs, the MT unit of the layer 1 forwarding node may perform a cell search. If a cell found by the MT unit of the layer 1 forwarding node includes one cell belonging to the original serving base station, the cell belonging to the original serving base station is preferentially selected as the target cell for radio link connection reestablishment. If the MT unit of the layer 1 forwarding node finds a plurality of available cells belonging to the original serving base station, a cell with strongest received signals and/or best quality of received signals in the plurality of available cells belonging to the original serving base station is selected as the target cell for radio link connection reestablishment. If a plurality of available cells found by the MT unit of the layer 1 forwarding node include the original serving cell, and signal strength of the original serving cell is greater than the first threshold, the original serving cell is selected for radio link connection reestablishment.
In some embodiments, after the MT unit determines the RLF, if the MT unit and the forwarding unit are at a same frequency, it may be considered that an incident beam from the original serving cell is quite weak and a reflected beam is also quite weak. In this case, if the forwarding unit continues the forwarding behavior, because effective target signal reflection cannot be produced due to a weak incident signal, unnecessary interference and noise are generated. Therefore, to prevent generation of noise and interference, the forwarding behavior of the forwarding unit should be stopped. For example, for an NCR node, forwarding by an RU may be suspended; for an RIS node, a reflection panel may be adjusted to a diffuse reflection state, or a preset beam control parameter may be used to control a reflected beam to point to an area that UE does not reach. The preset beam control parameter may be pre-configured by a base station or configured by an operation administration and maintenance (OAM) server.
Optionally, after the layer 1 forwarding node selects the target cell, the forwarding unit may forward the signal of the target cell by itself. When the signal of the target cell is an SSB, the forwarding a signal of the target cell by using a forwarding unit of the layer 1 forwarding node may include at least one of the following:
Optionally, the default SSB forwarding configuration information may be preset depending on an SSB forwarding requirement, and may include but is not limited to at least one of the following: information about the SSB that needs to be forwarded, a first forwarded beam precoding matrix, a first power amplification factor, and a first power spectrum density.
Optionally, when the signal of the target cell is a signal other than an SSB, the forwarding a signal of the target cell by using a forwarding unit of the layer 1 forwarding node may include forwarding, by the layer 1 forwarding node by using the forwarding unit thereof, the received signal of the target cell according to default forwarding configuration information. The default forwarding configuration information may be preset depending on a requirement for forwarding the corresponding signal, and may include at least one of the following: a second forwarded beam precoding matrix, a second power amplification factor, a second power spectrum density, and the like.
The radio link failure processing method provided in this embodiment of this application may be performed by a radio link failure processing apparatus. In the embodiments of this application, an example in which the radio link failure processing apparatus performs the radio link failure processing method is used to describe the radio link failure processing apparatus provided in the embodiments of this application.
Optionally, the obtaining module 72 is configured to send a first request to a second base station. The first request is used to obtain the first information, and the second base station is a serving base station before the radio link failure occurs in the layer 1 forwarding node.
Optionally, the first request includes second information, and the second information includes at least one of the following: an identifier of the MT unit of the layer 1 forwarding node and an identifier of the layer 1 forwarding node.
Optionally, the first receiving module 71 is further configured to receive the second information from the layer 1 forwarding node.
Optionally, the obtaining module 72 is configured to obtain the first information based on the radio link connection establishment request and the second information. The second information includes the at least one of the following: the identifier of the MT unit of the layer 1 forwarding node and the identifier of the layer 1 forwarding node.
Optionally, the context information of the MT unit includes at least one of the following:
Optionally, the context information of the forwarding unit includes at least one of the following:
Optionally, the capability information of the forwarding unit includes at least one of the following:
Optionally, the configuration information of the forwarding unit includes at least one of the following:
Optionally, the topology information of the forwarding network in which the layer 1 forwarding node is located includes at least one of the following:
Optionally, in a case that the layer 1 forwarding node has the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node, the first information further includes at least one of the following:
Optionally, the context information of the all or some UEs includes first indication information, where the first indication information is used to indicate the identifier of the layer 1 forwarding node.
Alternatively, in a case that the first information includes the context information of the all or some UEs, the first information further includes second indication information, where the second indication information is used to indicate the identifier of the layer 1 forwarding node.
Optionally, the context information of the all or some UEs includes parameter information of a forwarded beam used for serving the all or some UEs.
Optionally, the first receiving module 72 is further configured to receive a radio link connection request from first UE.
The radio link failure processing apparatus 70 further includes a configuration module, configured to: in a case that the first base station has received context information of the first UE, configure the first UE based on the context information of the first UE; or in a case that the first base station does not receive context information of the first UE, request the context information of the first UE from the second base station, and configure the first UE based on the context information of the first UE. The second base station is the serving base station before the radio link failure occurs in the layer 1 forwarding node.
Optionally, in a case that the first information does not include the context information of the all or some UEs, the processing apparatus 70 further includes:
The radio link failure processing apparatus 70 provided in this embodiment of this application can implement the processes implemented by the method embodiment in
The first information includes at least one of the following:
Optionally, the first request includes second information, and the second information includes at least one of the following: an identifier of the MT unit of the layer 1 forwarding node and an identifier of the layer 1 forwarding node.
Optionally, the context information of the MT unit includes at least one of the following:
Optionally, the context information of the forwarding unit includes at least one of the following:
Optionally, the capability information of the forwarding unit includes at least one of the following:
Optionally, the configuration information of the forwarding unit includes at least one of the following:
Optionally, the topology information of the forwarding network in which the layer 1 forwarding node is located includes at least one of the following:
Optionally, in a case that the layer 1 forwarding node has the downstream layer 1 forwarding node and/or upstream layer 1 forwarding node, the first information further includes at least one of the following:
Optionally, the context information of the all or some UEs includes first indication information, where the first indication information is used to indicate the identifier of the layer 1 forwarding node.
Alternatively, in a case that the first information includes the context information of the all or some UEs, the first information further includes second indication information, where the second indication information is used to indicate the identifier of the layer 1 forwarding node.
Optionally, the context information of the all or some UEs includes parameter information of a forwarded beam used for serving the all or some UEs.
The radio link failure processing apparatus 80 provided in this embodiment of this application can implement the processes implemented by the method embodiment in
The first operation includes at least one of the following:
Optionally, the preset rule includes at least one of the following:
The second base station is a serving base station before the radio link failure occurs in the layer 1 forwarding node, and the first cell is a serving cell before the radio link failure occurs in the layer 1 forwarding node.
Optionally, when the signal of the target cell is an SSB, the execution module 92 is configured to perform at least one of the following:
Optionally, the default SSB forwarding configuration information includes at least one of the following: information about the SSB that needs to be forwarded, a first forwarded beam precoding matrix, a first power amplification factor, and a first power spectrum density.
Optionally, when the signal of the target cell is a signal other than the SSB, the execution module 92 is configured to forward, by using the forwarding unit of the layer 1 forwarding node, the received signal of the target cell according to default forwarding configuration information. The default forwarding configuration information includes at least one of the following: a second forwarded beam precoding matrix, a second power amplification factor, and a second power spectrum density.
The radio link failure processing apparatus 90 provided in this embodiment of this application can implement the processes implemented by the method embodiment in
Optionally, as shown in
An embodiment of this application further provides a network-side device, including a processor and a communication interface. For example, when the network-side device is a first base station, the communication interface is configured to: receive a radio link connection establishment request from a layer 1 forwarding node, and obtain first information based on the radio link connection establishment request; when the network-side device is a second base station, the communication interface is configured to: receive a first request from a first base station, and send first information to the first base station, where the first information includes at least one of the following: context information of an MT unit of a layer 1 forwarding node, context information of a forwarding unit of a layer 1 forwarding node, topology information of a forwarding network in which a layer 1 forwarding node is located, information about a list of UEs served by a layer 1 forwarding node, and context information of all or some UEs served by a layer 1 forwarding node; or when the network-side device is a layer 1 forwarding node, the processor is configured to: determine that a radio link failure occurs, and perform a first operation. The first operation includes at least one of the following: selecting a target cell according to a preset rule; during radio link connection reestablishment, sending second information to a target base station, where the second information includes at least one of the following: an identifier of an MT unit of the layer 1 forwarding node and an identifier of the layer 1 forwarding node; stopping forwarding behavior of a forwarding unit of the layer 1 forwarding node; and after a target cell is selected, forwarding a signal of the target cell by using a forwarding unit of the layer 1 forwarding node. The network-side device embodiments correspond to the foregoing method embodiments. The implementation processes and the implementations of the foregoing method embodiments may all be applicable to the network-side device embodiments, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.
Specifically, this embodiment of this application further provides a network-side device. As shown in
The methods performed by the network-side device in the foregoing embodiment may be implemented in the baseband apparatus 113. The baseband apparatus 113 includes a baseband processor.
The baseband apparatus 113 may include, for example, at least one baseband board. A plurality of chips are disposed on the baseband board. As shown in
The network-side device may further include a network interface 116. The interface is, for example, a common public radio interface (CPRI).
Specifically, the network-side device 110 in this embodiment of the present invention further includes instructions or the program stored in the memory 115 and capable of running on the processor 114. The processor 114 invokes the instructions or the program in the memory 115 to perform the method performed by the modules shown in
An embodiment of this application further provides a readable storage medium. The readable storage medium stores a program or instructions. When the program or the instructions are executed by a processor, the processes in the foregoing radio link failure processing method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.
The processor is the processor in the UE described in the foregoing embodiments. The readable storage medium includes a computer-readable storage medium, for example, a computer read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disc.
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 in the foregoing radio link failure processing method embodiments, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.
It should be understood that the chip mentioned in this embodiment of this application may also be referred to as a system-level chip, a system chip, a chip system, a system on chip, or the like.
An embodiment of this application further provides a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the processes in the foregoing radio link failure processing method embodiments, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.
An embodiment of this application further provides a communication system, including a first base station, a second base station, and a layer 1 forwarding node. The first base station may be configured to perform the steps of the radio link failure processing method described in
It should be noted that the term “include”, “comprise”, or any other variation thereof in this specification is intended to cover a non-exclusive inclusion, so that a process, a method, an article, or an apparatus that includes a list of elements not only includes those elements but also includes other elements that are not expressly listed, or further includes elements inherent to the process, method, article, or apparatus. In absence of more constraints, an element preceded by “includes a . . . ” does not preclude existence of other identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be noted that in the scope of the method and apparatus in embodiments of this application, an order in which functions are performed is not limited to the shown or discussed order, and may further include an order in which the functions are substantially performed at the same time or a reverse order, depending on the related functions. For example, the described method may be performed in an order different from the described order, and steps may be added, omitted, or combined. In addition, features described with reference to some examples may be combined in other examples.
According to the descriptions of the foregoing implementations, a person skilled in the art can clearly understand that the method in the foregoing embodiments may be implemented by software and a necessary universal hardware platform or by hardware only. In most cases, the former is a more preferred implementation. 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 computer software product. The computer software product is stored in a storage medium (for example, a ROM/RAM, a magnetic disk, or an optical disc), and includes several instructions to enable UE (which may be a mobile phone, a computer, a server, an air conditioner, a network device, or the like) to perform the method described in embodiments of this application.
Embodiments of this application are described above with reference to the accompanying drawings. However, this application is not limited to the foregoing specific implementations. The foregoing specific implementations are only illustrative rather than restrictive. Inspired by this application, a person of ordinary skill in the art can still derive a plurality of variations without departing from the essence of this application and the protection scope of the claims. All these variations shall fall within the protection of this application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210200255.7 | Mar 2022 | CN | national |
This application is a continuation of International Application No. PCT/CN2023/077840 filed on Feb. 23, 2023, which claims priority to Chinese Patent Application No. 202210200255.7 filed on Mar. 2, 2022, which are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/077840 | Feb 2023 | WO |
| Child | 18821073 | US |
