Search

CN-121099378-B - Communication method and device

CN121099378BCN 121099378 BCN121099378 BCN 121099378BCN-121099378-B

Abstract

The embodiment of the application provides a communication method and a device, and relates to the technical field of communication. The method comprises the steps that a first access network node sends a resource pool of at least one other access network node to a plurality of terminals, wherein the resource pool comprises at least one candidate uplink resource, and the candidate uplink resource is used for the terminals to send uplink signals for establishing communication connection to the corresponding access network nodes and is shared by the terminals. The first access network node sends second information to a first terminal in the plurality of terminals, and instructs the first terminal to send an uplink signal to a second access network node included in the at least one access network node on a first resource in a resource pool corresponding to the second access network node. And the first access network node manages the candidate uplink resources through a timer. The method can enable the source access network node to dynamically allocate authorized resources for the terminal in the shared resource pool, ensure that the terminal is correctly switched to the target access network node, be conductive to reducing waste caused by resource reservation and realize efficient utilization of resources.

Inventors

  • ZHANG JUN
  • WANG ZICHAO
  • LIU XU

Assignees

  • 荣耀终端股份有限公司

Dates

Publication Date
20260512
Application Date
20251107

Claims (14)

  1. 1. A method of communication, for application to a source access network node, the method comprising: Transmitting first information to a plurality of terminals, wherein the first information is used for indicating a resource pool corresponding to at least one access network node, the resource pool comprises at least one candidate uplink resource, and the at least one candidate uplink resource is used for the plurality of terminals to transmit uplink signals for establishing communication connection to the corresponding access network node; receiving fourth information from a first terminal, wherein the fourth information comprises information related to signal quality of a target access network node, the plurality of terminals comprise the first terminal, and the at least one access network node comprises the target access network node; Sending second information to a first terminal according to the fourth information, wherein the second information is used for indicating that the first terminal sends the uplink signal in a mobility LTM switching process triggered by layer 1/layer 2 to the target access network node on a first resource, and the first resource belongs to a resource pool corresponding to the target access network node in at least one access network node; Starting a timer under the condition that the second information is sent to the first terminal, wherein the timer is used for determining the duration of one terminal using one resource in the resource pool, and the running duration of the timer is provided by the at least one access network node through third information and updated by the target access network node through fifth information; After the timer expires, the first resource may be allocated to terminals other than the first terminal.
  2. 2. The method according to claim 1, wherein the method further comprises: receiving the third information from at least one access network node, wherein the third information is used for configuring a resource pool corresponding to the access network node, and the third information comprises at least one of the following: An identification of an access network node, a cell identification corresponding to the access network node, an index of an uplink resource in the resource pool, a time domain position of the uplink resource in the resource pool, or a frequency domain position of the uplink resource in the resource pool; and determining the first information according to third information of the at least one access network node.
  3. 3. The method according to claim 1 or 2, characterized in that the method further comprises: receiving the fifth information from the target access network node, wherein the fifth information is used for updating the first information and determining sixth information, and the sixth information is information sent by the source access network node to the first terminal and is used for determining an updated resource pool by the first terminal; Wherein the fifth information includes at least one of the following information: the method comprises the steps of updating an identification of an access network node, updating a cell identification corresponding to the access network node, updating an index of uplink resources, updating a time domain position of the uplink resources, updating a frequency domain position of the uplink resources or updating running time of a timer.
  4. 4. A method of communication, for application to a target access network node, the method comprising: Determining third information, where the third information is used to configure a resource pool corresponding to the target access network node, where the resource pool includes at least one candidate uplink resource, where the at least one candidate uplink resource is used by a plurality of terminals to send uplink signals for establishing communication connection in a layer 1/layer 2 triggered mobility LTM handover process to the target access network node, where the plurality of terminals include a first terminal, and the third information is further used to indicate an operation duration of a timer, where the operation duration of the timer is used to determine a duration of using one resource in the resource pool by the terminal; the third information is sent to a source access network node, and the third information is used for determining first information, wherein the first information is information sent to the plurality of terminals by the source access network node and is used for indicating a resource pool corresponding to at least one access network node; receiving the uplink signal from the mobility LTM switching process triggered by the layer 1/layer 2 of the first terminal on a first resource, so that the source access network node starts the timer; And sending fifth information to the source access network node, wherein the fifth information at least comprises the running time of the updated timer.
  5. 5. The method of claim 4, wherein the third information comprises at least one of: The method comprises the steps of identifying an access network node, identifying a cell corresponding to the access network node, indexing uplink resources in the resource pool, time domain positions of the uplink resources in the resource pool or frequency domain positions of the uplink resources in the resource pool.
  6. 6. The method of claim 4 or 5, wherein the fifth information further comprises at least one of: the identification of the updated access network node, the cell identification corresponding to the updated access network node, the index of the updated uplink resource, the time domain position of the updated uplink resource or the frequency domain position of the updated uplink resource, The fifth information is used for updating the first information to determine sixth information, and the sixth information is information sent by the source access network node to the first terminal and is used for the first terminal to determine an updated resource pool.
  7. 7. The method of claim 6, wherein the run length of the updated timer is determined based on a use of the at least one candidate uplink resource.
  8. 8. A communication method, applied to a first terminal, the method comprising: Receiving first information from a source access network node, wherein the first information is used for indicating a resource pool corresponding to at least one access network node, the resource pool comprises at least one candidate uplink resource, the at least one candidate uplink resource is used for a plurality of terminals to send uplink signals for establishing communication connection to the corresponding access network node, the plurality of terminals comprise the first terminal, the first information is also used for indicating the running time of a timer, and the timer is used for determining the time of one terminal using one resource in the resource pool; Transmitting fourth information to the source access network node, wherein the fourth information comprises information related to signal quality of a target access network node; The second information is determined by the source access network node according to the fourth information, the second information is used for indicating the first terminal to send the uplink signal in the layer 1/layer 2 triggered mobility LTM switching process to a target access network node on a first resource, the at least one access network node comprises the target access network node, and the first resource belongs to a resource pool corresponding to the target access network node; Transmitting the uplink signal to the target access network node on the first resource; stopping using the first resource after the timer expires; And the running duration of the timer is updated by the target access network node through fifth information.
  9. 9. The method of claim 8, wherein the first information comprises at least one of: The method comprises the steps of identifying an access network node, identifying a cell corresponding to the access network node, indexing uplink resources in the resource pool, time domain positions of the uplink resources in the resource pool or frequency domain positions of the uplink resources in the resource pool.
  10. 10. The method according to claim 8 or 9, characterized in that the method further comprises: Obtaining sixth information, wherein the sixth information comprises at least one of the following information: The method comprises the steps of updating an identification of an access network node, updating a cell identification corresponding to the access network node, updating an index of uplink resources, updating a time domain position of the uplink resources, updating a frequency domain position of the uplink resources or updating an operation time of a timer; and sending the uplink signal according to the sixth information.
  11. 11. A communication device is characterized by comprising a processor and a memory; The memory stores computer-executable instructions; The processor executing computer-executable instructions stored in the memory causing the communication device to perform the method of any one of claims 1 to 3 or causing the communication device to perform the method of any one of claims 4 to 7 or causing the communication device to perform the method of any one of claims 8 to 10.
  12. 12. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method of any one of claims 1 to 3, or implements the method of any one of claims 4 to 7, or implements the method of any one of claims 8 to 10.
  13. 13. A system on a chip comprising at least one processor and a communication interface, the communication interface and the at least one processor being interconnected by a wire, the at least one processor being adapted to execute a computer program or instructions to perform the method of any one of claims 1 to 3, or to perform the method of any one of claims 4 to 7, or to perform the method of any one of claims 8 to 10.
  14. 14. A computer program product comprising a computer program which, when run, causes a computer to perform the method of any one of claims 1 to 3, or to perform the method of any one of claims 4 to 7, or to perform the method of any one of claims 8 to 10.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background In high-speed mobile or complex coverage environments, a terminal may need to perform a cell handover to maintain a communication connection with a network. At present, L1/L2 triggered mobility (L1/L2 TRIGGERED MOBILITY, LTM) handover is proposed, that is, cell handover is performed by triggering a terminal through L1/L2 layer signaling, so that cell handover can be implemented with lower handover delay and shorter communication interruption time. The LTM handover supports a handover mechanism in which the terminal does not perform a random access procedure, called random access channel-less (RACH-less). The uplink resources of the corresponding candidate cell can be pre-allocated for the terminal by configuring the grant (configured grant, CG), so that when the RACH-less switching is executed, the uplink signals can be sent on the CG uplink resources of the candidate cell without monitoring a downlink control channel, thereby reducing the time delay. It can be seen that, in order to support the RACH-less handover mechanism, the network needs to configure a dedicated CG resource of each candidate cell for each terminal that is ready to execute RACH-less LTM, and the network side needs to reserve uplink resources for a long period, which causes problems of resource waste and low resource utilization. Disclosure of Invention The embodiment of the application provides a communication method and a device, which are applied to the technical field of communication to optimize resource management and improve the utilization rate of resources. In a first aspect, an embodiment of the present application provides a communication method. The method may be applied at an access network node, such as a base station, a centralized unit, or a distributed unit. The following description will take the first access network node as an example. The method includes that a first access network node sends first information to a plurality of terminals, the first information is used for indicating a resource pool corresponding to at least one access network node, the resource pool comprises at least one candidate uplink resource, and the at least one candidate uplink resource is used for sending uplink signals for establishing communication connection to the corresponding access network node by the terminals. The first access network node sends second information to the first terminal, the second information is used for indicating the first terminal to send uplink signals to the second access network node on first resources, the plurality of terminals comprise the first terminal, at least one access network node comprises the second access network node, and the first resources belong to a resource pool corresponding to the second access network node. The first access network node starts a timer in case of sending the second information to the first terminal, and after the timer expires, the first resource may be allocated to terminals other than the first terminal. Optionally, the first access network node is a source access network node corresponding to the first terminal, and the at least one access network node is a candidate access network node to which the first terminal may be switched. The first access network node may also be referred to as an access network node managing the serving cell of the first terminal, or a serving access node. Based on the above method, the source access network node may pre-configure a plurality of terminals with a resource pool of one or more candidate access network nodes shared by the plurality of terminals. The source access network node can allocate a first resource in the resource pool of the candidate access network node shared by the plurality of terminals to the first terminal as required, so that the first resource can be used as a first terminal dedicated resource in a period of time, and an uplink signal for network access can be sent to the candidate access network node through the first resource. And after the timer is overtime, releasing the first resource and recovering the first resource to be the common resource of a plurality of terminals. According to the method, the special resources of each candidate access network node do not need to be allocated for each terminal, the public resources of a plurality of terminals are dynamically allocated as the special resources of the terminals according to the needs through the source access network node, and the long management resources are allocated and released more flexibly when the method is combined for use, so that the resource utilization rate of a system is improved. In the embodiment of the application, the candidate access network node can be an access network node corresponding to the candidate cell, and the target access network no