WO2020200135A1

WO2020200135A1 - Resource configuration method and communication device

Info

Publication number: WO2020200135A1
Application number: PCT/CN2020/081938
Authority: WO
Inventors: 李翔宇; 彭文杰; 王君; 戴明增
Original assignee: 华为技术有限公司
Priority date: 2019-03-29
Filing date: 2020-03-28
Publication date: 2020-10-08
Also published as: CN111757403B; CN111757403A

Abstract

Disclosed are a resource configuration method and a communication device, applicable to the Internet of Vehicles such as V2X, LTE-V, V2V and the like. The method comprises: a first network device receives a first message for switching request sent by a second network device; and the first network device sends to the second network device a second message in response to the switching request, the second message comprising message for indicating whether a terminal device continues using a first transmission resource and/or a first transmission resource pool after switching to a target cell. The first transmission resource and the first transmission resource pool are used for supporting sidelink data transmission of the terminal device, the first transmission resource is scheduled for the terminal device in a source cell and the first transmission resource pool is configured in the source cell. The first network device can be used to decide whether a terminal device continues using a first transmission resource and/or a first transmission resource pool after cell switching, thereby improving the business continuity of the terminal device upon cell switching.

Description

Resource allocation method and communication device

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on March 29, 2019, the application number is 201910252621.1, and the application name is "a resource allocation method and communication device", the entire content of which is incorporated into this application by reference in.

Technical field

This application relates to the field of communication technology, and in particular to a resource configuration method and communication device.

Background technique

With the development of communication technology, the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) has proposed a vehicle to everything (V2X) technology based on a cellular network. V2X is a new generation of information and communication technology that can connect vehicles with everything. It has vehicle-to-vehicle (V2V) and vehicle-to-person communication as shown in Figure 1. to pedestrian, V2P), communication between vehicles and road facilities (vehicle-to-infrastructure, V2I), communication between vehicles and network (vehicle to network, V2N) and other application scenarios to help vehicles better realize Automated driving (ADS) function.

In the V2X system, when a terminal device in a radio resource control (Radio Resource Control, RRC) connected state performs cell handover, the special resource pool of the target cell can be included in the handover command and sent to the terminal device. The terminal device can randomly select resources from a special resource pool for side-chain data transmission during the period from receiving the handover command to completing the handover, or before selecting the sending resource through the sensing process. However, due to the high QoS requirements of V2X-type services, the special resource pool configured in the current handover command cannot support service continuity well and cannot meet the application scenarios of group communication.

Summary of the invention

The embodiments of the present application provide a resource configuration method and a communication device to solve the technical problem of poor service continuity of terminal equipment during cell handover in the prior art.

In the first aspect, embodiments of the present application provide a resource configuration method, which is applicable to a first network device, the first network device may be a target network device, and the second network device appearing in the method may be a source network device. The method includes: a first network device receives a first message sent by a second network device, the first message is used for a handover request, and the first message includes a first transmission resource configured in a source cell and/or a first message. The information of the transmission resource pool. The first transmission resource and the first transmission resource pool are respectively used to support the side chain data transmission of the terminal device. The first transmission resource is the transmission resource scheduled for the terminal device in the source cell. The first transmission resource pool Is the transmission resource pool configured in the source cell, and the terminal device is in the radio resource control RRC connection state; the first network device sends a second message for responding to the handover request to the second network device, and the second message includes instructions for indicating Information on whether the terminal device continues to use the first transmission resource and/or the first transmission resource pool after switching to the target cell.

Using the technical solutions in the embodiments of the present application, the first network device can decide whether to continue to use the first transmission resource and/or the first transmission resource pool configured in the source cell after the terminal device is handed over to the target cell, thereby enabling Ensure the business continuity of terminal equipment during cell handover.

With reference to the first aspect, in the first possible design of the first aspect, in the case that the first network device uses the first transmission resource and/or the first transmission resource pool after the terminal device decides to switch to the target cell, the The second message includes first indication information, and the first indication information is used to instruct the terminal device to use the first transmission resource and/or the first transmission resource pool after switching to the target cell.

Using the technical solutions in the embodiments of the present application, the first network device can instruct the terminal device to allow the terminal device to use the first transmission resource and/or configured in the source cell after switching to the target cell by responding to the handover request sent by the second network device. Or the information of the first transmission resource pool, so that the terminal device can use the same transmission resource or transmission resource pool to transmit data before and after cell handover, so as to avoid the impact of different resources configured in different cells on the continuity of communication.

With reference to the first aspect, in the second possible design of the first aspect, in the case that the first network device does not use the first transmission resource and/or the first transmission resource pool after the terminal device decides to switch to the target cell, the The second message may include second indication information, which is used to indicate the second transmission resource and/or the second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool respectively Used to support the side chain data transmission of the terminal device, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

Using the technical solutions in the embodiments of the present application, the first network device can instruct the terminal device to reconfigure the second transmission resource and/or that can be used after handover to the target cell by responding to the handover request sent by the second network device. Or the information of the second transmission resource pool, so as to ensure the service continuity of the terminal device during cell handover.

With reference to the first aspect, or any possible design of the first aspect, in the third possible design of the first aspect, the first transmission resource and/or the first transmission resource pool is the second network device from the terminal device Obtained from the sent measurement report message; or, the first transmission resource and/or the first transmission resource pool are determined by the second network device according to the identifier of the terminal device.

Using the technical solutions in the embodiments of the present application, the information of the first transmission resource and/or the first transmission resource pool configured in the source cell can be actively reported by the terminal device, or it can be reported by the second network device, such as the source network device according to the terminal The identification of the device is determined, and multiple implementation methods can effectively improve the applicability of this resource allocation method.

With reference to the first aspect, or any possible design of the first aspect, in the fourth possible design of the first aspect, when the first transmission resource and the second transmission resource are configured, the downlink control information DCI indicates activation or Deactivated transmission resources, or transmission resources that do not require DCI to indicate activation or deactivation during configuration; the first transmission resource pool and the second transmission resource pool include a transmission resource pool and a reception resource pool.

Using the technical solution in the embodiments of this application, the first transmission resource and the second transmission resource can be configured grant configured by the network device, for example, can be configured grant type1 that does not require DCI to indicate activation or deactivation, or it can be DCI indication required Configured grant type 2 for activation or deactivation; the first transmission resource pool and the second transmission resource pool can be resource pools configured for network devices, including sending and receiving resource pools.

In a second aspect, embodiments of the present application provide a resource configuration method, which is applicable to a second network device, the second network device may be a source network device, and the first network device appearing in the method may be a target network device. The method includes: a second network device sends a first message to a first network device, the first message is used for a handover request, and the first message includes a first transmission resource and/or a first transmission configured in a source cell. The information of the resource pool, the first transmission resource and the first transmission resource pool are respectively used to support the side chain data transmission of the terminal device, the first transmission resource is the transmission resource scheduled for the terminal device in the source cell, and the first transmission resource pool is In the transmission resource pool configured in the source cell, the terminal device is in the radio resource control RRC connection state; the second network device receives a second message sent by the first network device for responding to the handover request, and the second message includes Information indicating whether the terminal device continues to use the first transmission resource and/or the first transmission resource pool after switching to the target cell.

Using the technical solutions in the embodiments of this application, the first network device can decide whether to continue to use the first transmission resource and/or the first transmission resource pool configured in the source cell after the terminal device is handed over to the target cell, and pass The second message in response to the handover request is sent to the second network device, so as to ensure the service continuity of the terminal device during cell handover.

With reference to the second aspect, in the first possible design of the second aspect, when the first network device decides to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the The second message includes first indication information, which is used to instruct the terminal device to use the first transmission resource and/or the first transmission resource pool after switching to the target cell.

Using the technical solutions in the embodiments of the present application, the first network device can instruct the terminal device to allow the terminal device to use the first transmission resource and/or configured in the source cell after switching to the target cell by responding to the handover request sent by the second network device. Or the first transmission resource pool, so that the terminal device can use the same transmission resource or transmission resource pool to transmit data before and after cell handover, so as to prevent different resources configured in different cells from affecting the continuity of communication.

With reference to the second aspect, in the second possible design of the second aspect, in the case that the first network device decides not to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, The handover response message includes second indication information, which is used to indicate the second transmission resource and/or the second transmission resource pool reconfigured in the target cell, the second transmission resource and the second transmission resource pool They are respectively used to support side-chain data transmission of the terminal device after the handover is completed, the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, and the second transmission resource pool is a transmission resource pool configured in the target cell.

Using the technical solutions in the embodiments of the present application, the first network device can indicate the second transmission resource and/or used after handover to the target cell reconfigured for the terminal device by responding to the handover request sent by the second network device The second transmission resource pool can thus ensure the service continuity of the terminal equipment during cell handover.

With reference to the second aspect, or any possible design of the second aspect, in the third possible design of the second aspect, before the second network device sends the first message to the first network device, the method further includes: Receiving the measurement report message sent by the terminal device, and obtain the first transmission resource and/or the first transmission resource pool according to the measurement report message; or, the method may further include that the second network device determines the first transmission resource and/or the identification of the terminal device Or the first transmission resource pool.

With reference to the second aspect, or any possible design of the second aspect, in the fourth possible design of the second aspect, when the first transmission resource and the second transmission resource are configured, the downlink control information DCI is required to indicate activation or Deactivated transmission resources, or transmission resources that do not require DCI to indicate activation or deactivation during configuration; the first transmission resource pool and the second transmission resource pool include a transmission resource pool and a reception resource pool.

In a third aspect, an embodiment of the present application provides a communication device, which may have the function of the first network device in the first aspect or any possible design of the first aspect. The communication device may be the first network device, or a device included in the first network device, such as a chip. The function of the above-mentioned first network device may be realized by hardware, or may be realized by hardware executing corresponding software, and the hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the first aspect or any one of the first aspects. . The transceiver module is used to support communication between the communication device and other communication devices, for example to receive a first message sent by a second network device, or to send a second message for responding to a handover request to the second network device. The communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.

In another possible design, the structure of the communication device includes a processor, and may also include a memory. The processor is coupled with the memory and can be used to execute computer program instructions stored in the memory, so that the communication device executes the first aspect described above. Or any of the possible design methods in the first aspect. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface. When the communication device is a first network device, the communication interface may be a transceiver or an input/output interface; when the communication device is a chip included in the first network device, the communication interface may be an input/output interface of the chip. Optionally, the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.

Alternatively, the communication device may have the function of realizing the second network device in the second aspect or any one of the possible designs of the second aspect. The communication device may be a second network device, or a device included in the second network device, such as a chip. The functions of the foregoing second network device may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the foregoing functions.

In a possible design, the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the second aspect or any one of the second aspects above. . The transceiver module is used to support communication between the communication device and other communication devices, for example, sending a first message to a first network device, or receiving a second message sent by the first network device in response to a handover request. The communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.

In another possible design, the structure of the communication device includes a processor, and may also include a memory. The processor is coupled to the memory and can be used to execute computer program instructions stored in the memory, so that the communication device executes the above second aspect. Or any of the possible design methods of the second aspect. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface. When the communication device is a second network device, the communication interface may be a transceiver or an input/output interface; when the communication device is a chip included in the second network device, the communication interface may be an input/output interface of the chip. Optionally, the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.

In a fourth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled to a memory, the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , So that the chip system implements any possible design method of the foregoing first aspect, or implements any possible design method of the foregoing second aspect.

Optionally, there may be one or more processors in the chip system. The processor can be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented by software, the processor can be a general-purpose processor, implemented by reading software codes stored in the memory.

Optionally, there may be one or more memories in the chip system. The memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips. The setting method of the processor is not specifically limited.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions. When the computer reads and executes the computer-readable instructions, the computer is caused to execute the first The method in any possible design of the aspect, or the method in any possible design of the above-mentioned second aspect.

In a sixth aspect, the embodiments of the present application provide a computer program product. When the computer reads and executes the computer program product, the computer executes any of the possible design methods in the first aspect, or executes the first Any of the two possible design methods.

In the seventh aspect, embodiments of the present application provide another resource configuration method, which is applicable to terminal devices. The method includes: a terminal device obtains a condition for triggering a connection, and the condition includes one or more of the following: the system broadcast message does not include the transmission resource pool corresponding to the frequency of interest in the business, and the use is corresponding to the frequency of interest in the business. When the transmission resource in the transmission resource pool transmits data, the channel state information is worse than or worse than the first threshold, or the channel congestion is greater than or greater than or equal to the second threshold, and the transmission resource pool configured for the frequency of interest of the current service does not meet The QoS requirements of the new service and the service transmission mode change; the terminal device sends a third message to the network device, and the third message is used for radio resource control RRC connection establishment or RRC connection recovery.

Using the technical solution provided by the embodiments of this application, the conditions for triggering the connection are set in consideration of various factors such as the channel quality of the existing service transmission, the QoS requirements of the new service, the service transmission mode, etc., which can better guarantee the side link The QoS requirements for service transmission on the above avoid the situation that the connection establishment conditions are too single, and the terminal equipment cannot enter the RRC connection state.

In combination with the seventh aspect, in the first possible design of the seventh aspect, the transmission resource pool configured for the frequency points of interest for the current service does not meet the QoS requirements of the new service, including: the transmission delay required by the new service is less than or less than Equal to the third threshold; or, the reliability required by the new service is greater than or equal to the fourth threshold; or, the transmission rate required by the new service is greater than or equal to the fifth threshold; or, the communication distance required by the new service is greater than the sixth threshold; Or, one or more QoS parameters corresponding to the new service exceed the seventh threshold or are not in the configuration list; the service transmission mode changes, including: service transmission period, service transmission data volume information, and service transmission time information , One or more of the frequency information of service transmission changes. It can be seen that when the conditions for triggering the connection involve judging whether the transmission resource pool corresponding to the frequency of interest for the service can meet the QoS requirements of the new service, and judging whether the service transmission mode has changed, there are many judgment methods and good flexibility.

In combination with the seventh aspect or the first possible design in combination with the seventh aspect, in the second possible design of the seventh aspect, for any one or more including the first threshold to the seventh threshold and the configuration list Parameters, the method further includes: the terminal device receives an RRC message sent by the network device, the RRC message includes any one or more parameters; or, the terminal device receives a system broadcast message sent by the network device, and the system broadcast message includes any one Or multiple parameters; or, the terminal device obtains any one or more parameters pre-configured on the terminal device.

Using the technical solutions provided by the embodiments of this application, any one or more parameters involved in the connection triggering condition can be configured through multiple possible implementations, avoiding a single parameter configuration method that affects the terminal device to initiate RRC connection establishment Or the RRC connection is restored, which effectively improves the applicability of the resource allocation method. When a certain configuration method is unavailable, the network device can also choose other methods to configure the parameters in the conditions, and it is also convenient for the network device to update the conditions that trigger the connection in time according to environmental changes.

With reference to the second possible design of the seventh aspect, in the third possible design of the seventh aspect, the method further includes: the terminal device determines the value of any one or more parameters according to the received RRC message ; If the terminal device does not receive the RRC message, it determines the value of any one or more parameters according to the received system broadcast message; if the terminal device does not receive the RRC message, and the system broadcast message is not received, it will obtain the advance Any one or more of the parameters configured.

With the technical solution provided by the embodiments of the present application, since the terminal device may receive one, two, or even zero of the RRC message and system broadcast message used to configure any one or more parameters, each of the parameter configurations is This method of setting priority can ensure the orderly setting of the connection trigger condition rules.

In an eighth aspect, embodiments of the present application provide another resource configuration method, which is applicable to terminal devices. The method includes: the terminal device enters the radio resource control RRC idle state or the RRC inactive state, or leaves the coverage of the network device; the terminal device retains the third transmission resource and/or the third transmission resource pool configured in the source cell, and third The transmission resource and the third transmission resource pool are respectively used to support the side chain data transmission of the terminal device. The third transmission resource is the transmission resource scheduled for the terminal device in the source cell, and the third transmission resource pool is the transmission configured in the source cell. Resource pool.

Using the technical solution in the embodiments of the present application, when the terminal device enters the RRC idle state or the RRC inactive state, the transmission resources and/or transmission resource pool originally configured by the second network device can be reserved, so as to better support business continuity , To meet the QoS requirements for data transmission on the side link, and avoid the terminal device from directly releasing the resources configured by the second network device during the RRC state transition, which affects the data transmission on the side link. Since the terminal device cannot listen to the system broadcast message sent by the network device after it leaves the coverage area of the network device, when the terminal device leaves the coverage area of the network device, it retains the transmission resources and/or originally configured by the second network device within the coverage area of the network device. Or the transmission resource pool can effectively support the business continuity of the terminal equipment on the side link.

With reference to the eighth aspect, in the first possible design of the eighth aspect, when the terminal device leaves the coverage area of the network device, for example, after the terminal device leaves the coverage area of the network device, the method further includes: passing through the third transmission resource And/or the effective duration corresponding to the third transmission resource pool respectively, the terminal device releases the third transmission resource and/or the third transmission resource pool.

Using the technical solutions in the embodiments of the present application, corresponding effective durations are respectively set for the third transmission resource and/or the third transmission resource pool reserved by the terminal device after leaving the coverage of the network device, which can effectively improve the resource utilization of the system.

In combination with the first possible design of the eighth aspect, in the second possible design of the eighth aspect, when the terminal device leaves the coverage area of the network device, for example, before the terminal device leaves the coverage area of the network device, the method still Including: the terminal device receives the RRC message sent by the first network device, the RRC message includes the above effective duration; or, the terminal device receives the system broadcast message sent by the first network device, the system broadcast message includes the above effective duration; or, the terminal device Get the valid duration pre-configured on the terminal device.

Using the technical solutions in the embodiments of the present application, the terminal device can obtain the effective duration set by the network device for the third transmission resource and/or the third transmission resource pool through multiple possible implementations, thereby avoiding the setting of the effective duration The method is too single, and the terminal device does not release the reserved transmission resource and/or the transmission resource pool after leaving the coverage of the network device, which effectively improves the resource utilization rate of the system.

In combination with the second possible design of the eighth aspect, in the third possible design of the eighth aspect, the method further includes: the terminal device determines the effective duration according to the received RRC message; if the terminal device does not receive the RRC message , The effective duration is determined according to the received system broadcast message; if the terminal device does not receive the RRC message, and the system broadcast message is not received, the pre-configured effective duration is obtained.

In this way, since the terminal device may receive one, two, or even zero of the RRC message and the system broadcast message used to configure the effective duration, setting the priority for various implementations of the effective duration configuration can ensure successful setting The effective duration of the third transmission resource and/or the third transmission resource pool is such that after the terminal device leaves the coverage of the network device, these resources can be released after the corresponding effective duration, thereby improving the resource utilization of the system.

With reference to the eighth aspect, in the fourth possible design of the eighth aspect, when the terminal device enters the RRC idle state or the RRC inactive state, for example, after the terminal device enters the RRC idle state or the RRC inactive state, the method It also includes: the terminal device sends a fourth message to the first network device, the fourth message is used for RRC connection establishment or RRC connection recovery, and the fourth message includes information for indicating the third transmission resource and/or the third transmission resource pool. Information; the terminal device receives a fifth message sent by the first network device, the fifth message including information used to indicate whether the terminal device continues to use the third transmission resource and/or the third transmission resource pool after accessing the target cell.

Using the technical solutions in the embodiments of the present application, the terminal device can carry the currently reserved transmission resources and/or the transmission resource pool, and send the fourth message for RRC connection establishment or RRC connection recovery to the first network device, so that the first network The device decides whether to continue to use the currently reserved transmission resources and/or transmission resource pool, thereby effectively ensuring the business continuity of the terminal device.

In combination with the fourth possible design of the eighth aspect, in the fifth possible design of the eighth aspect, the third transmission resource and/or the third transmission are used after the first network device determines that the terminal device accesses the target cell In the case of a resource pool, the fifth message includes third indication information, and the third indication information is used to instruct the terminal device to use the third transmission resource and/or the third transmission resource pool after accessing the target cell.

Using the technical solution in the embodiment of the present application, the first network device can send a fifth message to indicate that the terminal device is allowed to use the third transmission resource and/or the third transmission resource pool configured in the source cell after handing over to the target cell. Therefore, the terminal device can use the same transmission resource or transmission resource pool to transmit data before and after the cell handover, and avoid the impact of different resources configured in different cells on the service continuity of group communication.

In combination with the fourth possible design of the eighth aspect, in the sixth possible design of the eighth aspect, after the first network device decides that the terminal device accesses the target cell, the third transmission resource and/or the third transmission resource are not used. In the case of a transmission resource pool, the fifth message includes fourth indication information, which is used to indicate the fourth transmission resource and/or the fourth transmission resource pool reconfigured in the target cell, and the fourth transmission resource And the fourth transmission resource pool are respectively used to support the side chain data transmission of the terminal device, the fourth transmission resource is the transmission resource scheduled for the terminal device in the target cell, and the fourth transmission resource pool is the transmission resource configured in the target cell Pool.

Using the technical solution in the embodiment of the present application, the first network device can send a fifth message to indicate the second transmission resource and/or the second transmission resource pool that can be used after handover to the target cell reconfigured for the terminal device, This can ensure the service continuity of the terminal equipment during cell handover.

In combination with the fourth to sixth possible designs of the eighth aspect, in the seventh possible design of the eighth aspect, when the terminal device enters the RRC idle state or the RRC inactive state, for example, the terminal device enters Before the RRC idle state or the RRC inactive state, the method further includes: the terminal device receives a sixth message sent by the second network device, the sixth message is used for RRC connection suspension or RRC connection release, and the sixth message includes instructions for indicating Information about the first area, where the first area is an area that allows the terminal device to continue to use the third transmission resource and/or the third transmission resource pool when cell reselection occurs, and the first area includes at least one cell.

By adopting the technical solution in the embodiment of the present application, by setting the first area for the terminal device, the mobility of the terminal device in the RRC idle state or the RRC inactive state can be effectively supported. In this way, the terminal device moves in the first cell and can continue to use the third transmission resource and/or the third transmission resource pool when a cell reselection occurs, without the need for the network device to reconfigure resources.

With reference to the seventh possible design of the eighth aspect, in the eighth possible design of the eighth aspect, before the terminal device sends the fourth message, the method further includes: the terminal device leaves the first area, and the terminal device is sending The fourth message was in the RRC idle state or the RRC inactive state before.

Using the technical solutions in the embodiments of the present application, if the network device indicates the first area in the sixth message for RRC connection suspension or RRC connection release, the terminal device can send a message for RRC when leaving the first area The fourth message of connection establishment requests the network device to perform resource configuration. The network device can allow the terminal device to continue to use the reserved transmission resource or transmission resource pool, and can also reconfigure the available transmission resource or transmission resource pool for the terminal device.

With reference to the seventh possible design of the eighth aspect, in the ninth possible design of the eighth aspect, before the terminal device sends the fourth message, the method further includes: the terminal device obtains that the condition for triggering the connection is satisfied, and the terminal device It is in the RRC idle state or RRC inactive state before sending the fourth message.

Using the technical solutions in the embodiments of the present application, when the terminal device can obtain the met conditions for triggering the connection, it sends a fourth message for RRC connection establishment to enter the RRC connection state and request the network device to perform explicit resource configuration, thereby Better support the business continuity of terminal equipment and improve side chain transmission efficiency.

In combination with the ninth possible design of the eighth aspect, in the tenth possible design of the eighth aspect, the conditions for triggering the connection may include one or more of the following: use the transmission in the third transmission resource pool When the resource transmits data, the channel state information is worse than or worse than the first threshold, or the channel congestion is greater than or greater than the second threshold; the third transmission resource pool does not meet the QoS requirements of the new service; the service transmission mode changes .

Using the technical solutions in the embodiments of this application, the conditions for triggering the connection can consider various factors such as the channel quality of the existing service transmission, the QoS requirements of the new service, and the service transmission mode. Therefore, the service on the side chain can be better guaranteed Transmit the QoS requirements to avoid the situation that the connection establishment conditions are too single, and the terminal equipment cannot enter the RRC connection state.

In combination with the tenth possible design of the eighth aspect, in the eleventh possible design of the eighth aspect, the third transmission resource pool does not meet the QoS requirements of the new service, including: the transmission delay required by the new service is less than or Less than or equal to the third threshold; or, the reliability required by the new service is greater than or equal to the fourth threshold; or, the transmission rate required by the new service is greater than or equal to the fifth threshold; or, the communication distance required by the new service is greater than the sixth threshold ; Or, one or more QoS parameters corresponding to the new service exceed the seventh threshold or are not in the configuration list; service transmission mode changes, including: service transmission period, service transmission data volume information, service transmission time One or more of the frequency information of information and service transmission changes. It can be seen that when the conditions for triggering the connection involve judging whether the transmission resource pool corresponding to the frequency of interest for the service can meet the QoS requirements of the new service, and judging whether the service transmission mode has changed, there are many judgment methods and good flexibility.

In combination with the tenth or eleventh possible design of the eighth aspect, in the twelfth possible design of the eighth aspect, for any one including the first threshold to the seventh threshold and the configuration list Or multiple parameters, the method further includes: the terminal device receives an RRC message sent by the first network device, where the RRC message includes any one or more parameters; or, the terminal device receives a system broadcast message sent by the first network device, the The system broadcast message includes the any one or more parameters; or, the terminal device obtains the any one or more parameters pre-configured on the terminal device. Optionally, the terminal device may receive the foregoing RRC message or system broadcast message or obtain the pre-configuration before obtaining the trigger connection.

With the technical solution in the embodiment of the present application, any parameter involved in the connection trigger condition can be set in multiple ways, so that the connection trigger condition can be made more flexible and more suitable for the requirement of the terminal device to enter the RRC connection state.

With reference to the twelfth possible design of the eighth aspect, in the thirteenth possible design of the eighth aspect, the method further includes: the terminal device determines the selection of any one or more parameters according to the received RRC message Value; if the terminal device does not receive the RRC message, it determines the value of any one or more parameters according to the received system broadcast message; if the terminal device does not receive the RRC message, and the system broadcast message is not received, then obtain Any one or more parameters configured in advance.

Using the technical solutions provided by the embodiments of this application, any one or more parameters involved in the connection triggering condition can be configured through multiple possible implementations, avoiding a single parameter configuration method that affects the terminal device to initiate RRC connection establishment Or the RRC connection is restored, which effectively improves the applicability of the resource allocation method. When a certain configuration method is not available, the network device can also choose other methods to configure the parameters in the condition, and it is also convenient for the network device to update the conditions that trigger the connection in time according to environmental changes.

In combination with any possible design of the eighth aspect, in the fourteenth possible design of the eighth aspect, the third transmission resource and the fourth transmission resource are transmissions that require downlink control information DCI to indicate activation or deactivation when configured. Resources, or sending resources that do not require DCI to indicate activation or deactivation during configuration; the third transmission resource pool and the fourth transmission resource pool include a sending resource pool and a receiving resource pool.

In a ninth aspect, an embodiment of the present application provides another communication device, which has the function of a terminal device in any possible design of the seventh aspect or the seventh aspect, or has the function of implementing the eighth or the first aspect. The function of the terminal device in any one of the eight possible designs. The communication device may be a terminal device, such as a vehicle-mounted terminal device or a vehicle-mounted communication device, a device contained in the terminal device, such as a chip, or a device containing the terminal device, such as various types of vehicles. The functions of the above-mentioned terminal device may be realized by hardware, or may be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the seventh aspect or any one of the seventh aspects. , Or perform the corresponding function in the eighth aspect or any one of the eighth aspects mentioned above. The transceiver module is used to support communication between the communication device and other communication devices, for example, sending a third message for RRC connection establishment or RRC connection recovery to the network device. The communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.

In another possible design, the structure of the communication device includes a processor and a memory. The processor is coupled with the memory and can be used to execute computer program instructions stored in the memory, so that the communication device executes the seventh aspect. Or any one of the possible design methods of the seventh aspect, or implement any one of the above-mentioned eighth aspect or the eighth aspect. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface. When the communication device is a terminal device, the communication interface can be a transceiver or an input/output interface; when the communication device is a chip included in a short-to-medium-short device, the communication interface can be an input/output interface of the chip. Optionally, the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.

In a tenth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , Enabling the chip system to implement any one of the possible design methods of the foregoing seventh aspect, or implement any one of the foregoing eighth aspect methods in a possible design.

Optionally, there may be one or more processors in the chip system. The processor can be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.

In an eleventh aspect, an embodiment of the present application provides a computer-readable storage medium that stores computer-readable instructions. When the computer reads and executes the computer-readable instructions, the computer executes the above-mentioned first Any one of the possible design methods of the seven aspects, or any one of the possible design methods of the eighth aspect described above.

In the twelfth aspect, the embodiments of the present application provide a computer program product. When the computer reads and executes the computer program product, the computer executes any of the possible design methods in the seventh aspect, or executes the foregoing Any possible design method of the eighth aspect.

In a thirteenth aspect, embodiments of the present application provide a communication system, which includes one or more of the terminal device, the first network device, and the second network device described in the foregoing aspects.

Description of the drawings

Figure 1 is a schematic diagram of the application scenario of V2X technology;

FIG. 2 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable;

FIG. 3 is a schematic diagram of a conversion relationship between RRC connection states provided by an embodiment of the application;

FIG. 4 is a schematic flowchart of a resource configuration method provided by an embodiment of this application;

FIG. 5 is a schematic flowchart of another resource configuration method provided by an embodiment of this application;

FIG. 6a is a schematic diagram of the application of a condition for triggering a connection provided by an embodiment of this application;

FIG. 6b is a schematic diagram of another application for triggering connection conditions provided by an embodiment of this application;

FIG. 7 is a schematic flowchart of another resource configuration method provided by an embodiment of this application;

FIG. 8 is a schematic diagram of an extension process of another resource configuration method provided by an embodiment of the application;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 10 is another schematic structural diagram of a communication device according to an embodiment of the application;

FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 12 is a schematic diagram of another structure of another communication device provided by an embodiment of this application.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WIMAX) communication system, fifth generation (5G) The system or new radio (NR), or applied to future communication systems or other similar communication systems, etc.

In addition, the technical solutions provided by the embodiments of the present application can be applied to cellular links, and can also be applied to links between devices, such as device-to-device (D2D) links. The D2D link or V2X link may also be referred to as a side link (SL), side link, side link, or auxiliary link. In the embodiments of the present application, the aforementioned terms all refer to links established between devices of the same type, and have the same meaning. The so-called devices of the same type can be the link between the terminal device and the terminal device, the link between the base station and the base station, and the link between the relay node and the relay node. This application The embodiment does not limit this. For the link between the terminal device and the terminal device, there are D2D links defined by 3GPP version (Rel)-12/13, and there are also car-to-car, car-to-mobile, or car-to-any entity defined by 3GPP for the Internet of Vehicles V2X link, including Rel-14/15. It also includes the V2X link based on the NR system of Rel-16 and subsequent versions that are currently being studied by 3GPP.

Please refer to FIG. 2, which is a network architecture of a communication system to which this embodiment of the application is applicable. The communication system includes a network device 210, a terminal device 220, and a terminal device 230. Further, the communication system also includes an application server 240.

The above-mentioned network architecture includes two communication interfaces: PC5 interface and Uu interface. Among them, the PC5 interface refers to the direct communication interface between the terminal device and the terminal device, and the direct communication link between the terminal device and the terminal device is the side link, which is used for the communication between the terminal device and the terminal device. . Communication based on sidelinks can use at least one of the following channels: physical sidelink shared channel (PSSCH), used to carry data; physical sidelink control channel (PSCCH) ), used to carry sidelink control information (SCI), and the SCI is also called scheduling assistance (SA).

The Uu interface is a communication interface between a terminal device and a network device, and the communication link between the terminal device and the network device includes an uplink (uplink, UL) and a downlink (downlink, DL). Communication based on the Uu interface can be that the sender terminal device sends data to the network device through the Uu interface, and after the network device sends the data to the application server for processing, then the application server sends the processed data to the network device and passes The network device sends it to the receiving terminal device. It should be noted that in the communication mode based on the Uu interface, the network device that forwards the uplink data from the sender's terminal device to the application server and the network device that forwards the downlink data issued by the application server to the recipient's terminal device may be the same network The device can also be a different network device, which can be determined by the application server.

The network device in FIG. 2 may be an access network device, such as a base station. Wherein the access network device in different systems corresponding to different devices, for example, in the fourth generation mobile communication technology (the 4 ^th generation, 4G) system, the eNB may correspond, a corresponding access network device 5G 5G in the system, For example, gNB. Although only the terminal device 220 and the terminal device 230 are shown in FIG. 2, it should be understood that the network device may provide services for multiple terminal devices, and the embodiment of the present application does not limit the number of terminal devices in the communication system. In the same way, the terminal device in FIG. 2 is described by taking a vehicle-mounted terminal device or a vehicle as an example, and it should be understood that the terminal device in the embodiment of the present application is not limited to this.

Hereinafter, some terms in the embodiments of the present application will be explained to facilitate the understanding of those skilled in the art.

1) Terminal equipment, also referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a way to provide users with voice and/or data connectivity Sexual equipment. The terminal device may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. For example, the terminal device may be a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminal devices are: mobile phones (mobile phones), tablets, laptops, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), the wireless terminal in the smart home (smart home), etc.

2) Network equipment is the equipment used in the network to connect terminal equipment to the wireless network. The network device may be a node in a radio access network, may also be called a base station, or may also be called a radio access network (RAN) node (or device). The network device can be used to convert received air frames and Internet Protocol (IP) packets to each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), or It can also include the next generation node B (gNB) in the new radio (NR) system of the fifth generation mobile communication technology (5G), or it can also include the transmission reception point. , TRP), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), or WiFi access point (access point, AP), etc., or may also include cloud A centralized unit (CU) and a distributed unit (DU) in an access network (cloud radio access network, CloudRAN) system are not limited in this embodiment of the application. For another example, a network device in a V2X technology is a roadside unit (RSU). The RSU may be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.

3) Resource allocation mode, also called resource allocation mode. A terminal device can use one or two resource configuration modes. The first resource configuration mode is that the resources of the terminal device for data transmission on the side link each time are scheduled and allocated by the network device. For example, the resource configuration mode Mode 3 defined in the LTE V2X system and the NR V2X system The defined resource configuration mode Mode 1. In this transmission mode, it will not happen that adjacent terminal devices are allocated the same resources, which can ensure better transmission reliability.

The second resource configuration mode is that the resources for the terminal device to transmit data on the side link each time are dynamically selected by the terminal device from the configured resource pool, for example, the resource configuration modes Mode 4 and Mode 4 defined in the LTE V2X system NR The resource configuration mode defined in the V2X system, Mode 2. The resource pool can be configured by network equipment through system broadcast messages or RRC messages. When the terminal device sends data, it can autonomously acquire at least part of the resources from the resource pool through random selection, based on the listening reservation mechanism or based on the partial listening reservation mechanism to send the data. Since the terminal device independently selects resources, it may happen that different terminal devices select the same resource to send data, and transmission collision may occur.

4) RRC connected state, the terminal device can have three RRC connected states: RRC connected state (RRC_CONNECTED), RRC idle state (RRC_IDLE) and RRC inactive state (RRC_INACTIVE). As shown in Figure 3, the RRC connected state and the RRC idle state and the RRC inactive state can be converted mutually, but the RRC idle state and the RRC inactive state can only be converted from the RRC inactive state to the RRC idle state. The terminal device in the RRC connected state can use the first resource configuration mode or the second resource configuration mode, or even both resource configuration modes at the same time. The specific resource configuration mode used is determined by the network device.

In addition, according to whether the terminal device is located within the coverage of the network device, it can be divided into in-coverage (IC) terminal devices and out-of-coverage (OOC) terminal devices. Only the terminal devices within the coverage of the network equipment have various RRC connection states, and the terminal devices located outside the coverage of the network equipment cannot directly interact with the network equipment.

5) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two or more. In view of this, "multiple" may also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and it does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C are included. In the same way, the understanding of "at least one" and other descriptions is similar. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

Unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or importance of multiple objects. And the descriptions of "first" and "second" do not limit the objects to be different.

Refer to FIG. 4, which is a resource configuration method provided by an embodiment of this application. The method can be applied to a scenario where a terminal device in an RRC connected state performs cell handover. The method includes the following steps S401 to S403:

Step S401: The first network device receives a first message sent by the second network device, the first message is used for a handover request, and the first message includes the first transmission resource and/or the first transmission configured in the source cell. Information about the resource pool.

In the embodiment of this application, the first network device may be the target network device, the target network device is the network device that the terminal device accesses after cell handover, and the target cell is the cell that the terminal device accesses after cell handover. The target cell It can be a cell under the target network device. Correspondingly, the second network device may be the source network device, the source network device is the network device that the terminal device accesses before the handover, and the source cell is the cell that the terminal device accesses before the cell handover. The first message sent by the second network device may also be referred to as a handover request message.

The first transmission resource and/or the first transmission resource pool are respectively used to support the side chain data transmission of the terminal device. The side chain data transmission refers to the data transmission between the terminal device and other terminal devices on the side link . Among them, the first transmission resource is the transmission resource scheduled by the second network device for the terminal device in the source cell, which may be a dedicated transmission resource for the terminal device, corresponding to the first resource configuration mode; the first transmission resource pool is the second network device The transmission resource pool configured for the terminal equipment in the source cell can be used in the absence of network scheduling resources, corresponding to the second resource configuration mode. It should be understood that the second network device may configure only the first transmission resource for the terminal device in the source cell, or configure only the first transmission resource pool for the terminal device in the source cell, or it may also be the terminal device in the source cell. The device configures the first transmission resource and also configures the first transmission resource pool, which is not limited in this application. Moreover, in the case where the second network device configures the first transmission resource and the first transmission resource pool for the terminal device in the source cell, the terminal device may only use the first transmission resource, or only use the first transmission resource pool. The resources in the first transmission resource and the resources in the first transmission resource pool can also be used at the same time, which is also not limited.

The first transmission resource may be a transmission resource that requires DCI to indicate activation or deactivation during configuration, or a transmission resource that does not require DCI to indicate activation or deactivation during configuration. In a possible design, the first transmission resource may be a configured grant, which is used to indicate the available time and frequency range of service transmission for the terminal device. The second network device may be based on the per cell and per bandwidth part (bandwidth part, BWP). ) Configure via RRC message. Configured grant includes two types: configured grant type1 and configured grant type2. The configured grant type1 does not require the DCI carried on the PDCCH to indicate activation and deactivation during configuration. Once configured, it can be used directly. The configured grant type2 requires the DCI carried on the PDCCH to indicate activation and deactivation during configuration. After configuration, it is necessary to determine whether to activate or not according to the activation and deactivation indication in the DCI. The first transmission resource pool is a collection of time-frequency resources, and may include two parts: a sending resource pool and a receiving resource pool. In a possible design, the first transmission resource pool may be a resource pool configured by the second network device.

It should be noted that before the second network device sends the first message for the handover request to the first network device, the second network device may receive the measurement report message sent by the terminal device. In a possible design, the measurement report message includes information used to indicate the first transmission resource and/or the first transmission resource pool. Therefore, the second network device may determine the first transmission resource and/or the first transmission resource pool according to the measurement report message sent by the terminal device. In another possible design, the measurement report message may also not include information indicating the first transmission resource and/or the first transmission resource pool, and the second network device may determine the first transmission resource and the first transmission resource pool according to the identification of the terminal device. /Or the first transmission resource pool. Exemplarily, the second network device saves information, records or correspondences of transmission resources and/or transmission resource pools configured for each terminal device in the source cell, and when it is necessary to send the first message to the first network device, according to the terminal The identifier of the device is searched in the stored correspondence relationship, and the corresponding first transmission resource and/or first transmission resource pool is determined.

In a possible design, the second network device may send the first message to the first network device through the Xn interface with the first network device, which is not limited in this embodiment of the application.

Step S402: The first network device sends a second message for responding to the handover request to the second network device, where the second message includes a second message for instructing the terminal device whether to continue to use the first transmission resource and/or the first transmission resource after switching to the target cell. Transmission resource pool information.

In the embodiment of the present application, the second message sent by the first network device for responding to the handover request may also be referred to as a handover response message or a handover request response message.

When the first network device decides that the terminal device uses the first transmission resource and/or the first transmission resource pool after switching to the target cell, the second message sent by the first network device may include the first indication information. The indication information is used to instruct the terminal device to use the first transmission resource and/or the first transmission resource pool after switching to the target cell. In the case that the first network device decides not to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell, the second message sent by the first network device may include the second indication information. The second indication information is used to indicate the second transmission resource and/or the second transmission resource pool that the first network device reconfigures for the terminal device in the target cell.

The second transmission resource and/or the second transmission resource pool are respectively used to support side chain data transmission of the terminal device. The second transmission resource is the transmission resource scheduled by the first network device for the terminal device in the target cell, corresponding to the first resource configuration mode, which can be a dedicated transmission resource for the terminal device; the second transmission resource pool is the first network device in the target cell. The transmission resource pool configured for terminal equipment in the cell can be used in the absence of network scheduling resources, corresponding to the second resource configuration mode. It should be understood that the first network device may configure only the second transmission resource for the terminal device in the target cell, or configure the second transmission resource pool for the terminal device only in the target cell, or it may also configure the second transmission resource pool for the terminal device in the target cell. The configuration of both the second transmission resource and the second transmission resource pool is not limited in this application. Similarly, in the case that the second transmission resource and the second transmission resource pool are configured at the same time, the terminal device can use the second transmission resource alone, can also use the resources in the second transmission resource pool alone, or use the second transmission resource pool at the same time. The transmission resources and the resources in the second transmission resource pool are also not limited.

Similar to the first transmission resource, the second transmission resource may be a transmission resource that requires DCI to indicate activation or deactivation during configuration, or a transmission resource that does not require DCI to indicate activation or deactivation during configuration. In a possible design, the second transmission resource may be a configured grant, which is used to indicate the available time and frequency range of service transmission for the terminal device, and may be configured by the first network device through the RRC message based on the per cell and per BWP. Configured grant includes configured grant type1 and configured grant type2. Configured grant type1 does not require the DCI carried on the PDCCH to indicate activation or deactivation during configuration, and configured grant type2 requires the DCI carried on the PDCCH to indicate activation or deactivation during configuration . Similar to the first transmission resource pool, the second transmission resource pool is a collection of a segment of time-frequency resources, and may include two parts: a sending resource pool and a receiving resource pool. In a possible design, the second transmission resource pool may be a resource pool configured by the first network device.

In a possible design, the first network device may send the foregoing second message to the second network device through the Xn interface with the second network device, which is not limited in this embodiment of the application.

Step S403: The second network device receives a second message used by the first network device to respond to the handover request.

After step S403, the second network device may send the first instruction information or the second instruction information sent by the first network device to the terminal device. In a possible design, the second network device may send a message for instructing cell handover to the terminal device, such as a handover message, and the message carries the first indication information or the second indication information.

In this way, the first network device decides whether the first transmission resource and/or the first transmission resource pool configured in the source cell can continue to be used in the target cell, and configures new transmission resources and/or for the terminal device when they are not available The new transmission resource pool can effectively ensure the business continuity of terminal equipment when cell handover occurs.

For example, in a group communication application scenario of a fleet, a fleet may have a large geographic range, and the terminal devices in the same fleet may be under the coverage of multiple cells. Using the solution provided in the embodiments of this application, when the terminal equipment in the fleet switches from one cell to another, the source cell and the target cell can use the same transmission resource or transmission resource pool under the decision of the first network equipment, or Before the terminal device performs cell handover, the transmission resource or transmission resource pool that the terminal device can use after accessing the target cell can be configured, so as to avoid the impact of different resources configured in different cells on the business continuity of group communication.

Please refer to FIG. 5, which is another resource configuration method provided by an embodiment of this application. The method includes the following steps S501 to S502:

Step S501: The terminal device obtains that the condition for triggering the connection is satisfied, and the condition can be specifically expressed as one or more of the following:

Condition 1. When using the transmission resource in the transmission resource pool corresponding to the frequency of interest for the service to transmit data, the channel state information is worse than or equal to the first threshold or the channel congestion degree is greater than or equal to the second threshold.

In the embodiment of the present application, when the system broadcast message includes the transmission resource pool corresponding to the frequency of interest in the service, the terminal device can use the resources in the transmission resource pool to transmit data. At this time, if condition 1 is met, it indicates that the channel quality on the current side link is poor, and the side chain data transmission of the existing service may not be guaranteed. The reason may be that terminal devices that use similar transmission resources are relatively close and interfere with each other more severely, or there are a large number of terminal devices in the same area, and the transmission resource pool configured in the system broadcast message cannot support the service transmission of these terminal devices. Therefore, the terminal device needs to request RRC connection establishment or RRC connection recovery.

The service frequency of interest refers to the frequency at which the service or service type data that the terminal device is interested in is transmitted. The terminal device can indicate the service frequency of interest in the side-chain UE information reported to the network device. Exemplarily, the terminal device may send sidelink UE information to the sidelink UE information. The SL-V2X-CommTxResourceReq-r14 cell IE in the side chain UE information may include one or more carriers, and each carrier corresponds to a destination ID. The list is used to indicate on which frequency points the terminal equipment has interesting services to be transmitted.

Condition 2. The transmission resource pool configured for the frequency points of interest for the current service does not meet or cannot support the QoS requirements of the new service.

In the embodiment of this application, the transmission resource pool configured for the frequency points of interest for the current service does not meet or cannot support the QoS requirements of the new service, which may include: the transmission delay required by the new service is less than or equal to the third threshold, The reliability required by the new service is greater than or equal to the fourth threshold, the data rate required by the new service is greater than or equal to the fifth threshold, and the communication distance required by the new service (minimum required communication range) is greater than or greater than Equal to the sixth threshold, one or more of the QoS parameters corresponding to the new service exceeds the seventh threshold range or is not in the configuration list. Among them, the one or more QoS parameters here may include the PC5 5G QoS identifier (PQI) of the fifth generation communication system, the V2X communication-based quality of service indicator (V2X QoS identifier, VQI), and the fifth generation communication system. System quality of service indicator (5G QoS identifier, 5QI), QoS flow identifier (QoS Flow ID, QFI), guaranteed flow bit rate (guaranteed flow bit rate, GFBR), maximum flow bit rate (maximum flow bit rate, MFBR), etc. One or more of.

The reason for dissatisfaction may be that new services require higher QoS parameters. For example, it can be lower transmission delay, higher reliability, higher transmission rate, larger communication distance, etc. These QoS parameters cannot be realized on the resources selected based on the transmission resource pool configured in the system broadcast message. Network equipment is required to configure more appropriate transmission resources to meet the requirements of new services.

Condition 3. The traffic pattern has changed.

In the embodiment of the present application, the service transmission mode includes various types of information such as the period of service transmission (periodicity), data volume information of service transmission, time information of service transmission, and frequency information of service transmission. Among them, the transmission period of the service is used to indicate the estimated time interval for the data of the service to arrive on the logical channel. For example, it can include various values such as 20ms, 50ms, 100ms, 200ms, or even 1000ms, which is not specifically limited; the service transmission data The amount information may be the size or data length of a transport block (TB) configured for the service, such as messagesize information; the time information of service transmission is used to indicate the time position of service transmission, for example, it may be timingoffset information.

Changes in the service transmission mode may include: changes in one or more of the period of service transmission (periodicity), data volume information of service transmission, time information of service transmission, and frequency information of service transmission. Due to changes in the service transmission mode, the transmission resource pool configured in the system broadcast message may no longer meet or be no longer suitable for service transmission requirements. Therefore, the terminal device needs to request RRC connection establishment or RRC connection recovery, so that the network device is configured with dedicated transmission resources. Exemplarily, the change in the service transmission mode may be that the service transmission period changes from 100 ms to 50 ms or 20 ms.

Condition 4. The system broadcast message does not include the transmission resource pool corresponding to the frequency of interest for the service. In a possible design, the transmission resource pool may be a transmission resource pool.

Step S502: The terminal device sends a third message to the network device, where the third message is used for radio resource control RRC connection establishment or RRC connection recovery.

In a possible design, the terminal device may send a third message to the network device when the above conditions are met. If the terminal device is currently in the RRC idle state, the third message can be used for RRC connection establishment. At this time, the third message can also be called an RRC connection establishment message; if the terminal device is currently in the RRC inactive state, the third message can be used for RRC The connection is restored. At this time, the third message may also be referred to as an RRC connection restoration message.

Exemplarily, as shown in FIG. 6a, the terminal device listens to a system broadcast message under the coverage of the network device, for example, a system information block (SIB) message. If the system broadcast message contains the configuration information of the transmission resource pool corresponding to the frequency of interest for the service, the terminal device can select resources from the transmission resource pool for service transmission on the side link based on the second resource configuration method; otherwise, , The terminal device may send a third message to the network device to request RRC connection establishment or RRC connection recovery to enter the RRC connection state, and the network device explicitly configures dedicated transmission resources.

For another example, as shown in FIG. 6b, the terminal device performs data transmission on the side link according to the reserved transmission resource pool or the transmission resource pool configured in the system broadcast message. If one or more of the above condition 1, condition 2, and condition 3 is satisfied, the terminal device may send a third message to request RRC connection establishment or RRC connection recovery. Among them, condition 1 indicates that the existing service transmission on the side link cannot be guaranteed due to poor channel/link quality and heavy load. Condition 2 indicates that the QoS requirements of the new service of the terminal equipment are higher, which exceeds the current The range that the resources in the configured transmission resource pool can support, condition 3 indicates that the service transmission mode has changed.

It should be noted that for any one or more parameters including the first threshold to the seventh threshold and the configuration list involved in the above conditions, the terminal device can receive the network before the terminal device determines whether the condition for triggering the connection is met. An RRC message sent by a device, the RRC message includes any one or more parameters; and/or, the terminal device may also receive a system broadcast message sent by a network device, and the system broadcast message includes any one or more parameters; And/or, the terminal device may also obtain the any one or more parameters pre-configured in the terminal device. In this way, any one or more parameters involved in the connection trigger condition can be configured through a variety of possible implementation methods, which can avoid a single parameter configuration method, and affect the terminal equipment to initiate RRC connection establishment or RRC connection recovery, which effectively improves Applicability of resource allocation methods. When a certain configuration method is not available, the network device can also choose other methods to configure the parameters in the condition. At the same time, it is also convenient for network equipment to update the conditions that trigger the connection in time according to changes in the environment or requirements.

Furthermore, the terminal device can also set priorities for various implementations for parameter configuration (which can be understood as the configuration method or source of the parameter). For example, the priority may be that the priority of the RRC message is greater than the priority of the system broadcast message, and the priority of the system broadcast message is greater than the priority of the pre-configured parameter. In this way, the terminal device can use the value configured in the manner with the highest priority as the final value of any one or more parameters according to the set priority. For example, if the terminal device receives an RRC message for configuring any one or more parameters, it can determine the value of any one or more parameters according to the RRC message; if it does not receive an RRC message for configuring any one or more parameters, The RRC message for each parameter, but the system broadcast message for configuring any one or more parameters is received, the value of any one or more parameters can be determined according to the system broadcast message; if it is not received for configuring the If an RRC message for any one or more parameters is not received, a system broadcast message for configuring any one or more parameters is not received, and any one or more parameters pre-configured in the terminal device may be acquired. In this way, since the terminal device may receive one, two, or even zero of the RRC message and the system broadcast message used to configure any one or more parameters, it is possible to set the priority for various implementation modes of parameter configuration. Make sure that the rules for setting the connection trigger conditions are in order.

It can be seen that the conditions for triggering the connection provided in the embodiments of the present application are set in consideration of various factors such as the channel quality of the existing service transmission, the QoS requirements of the new service, the service transmission mode, etc., which can better guarantee the side link The QoS requirements for service transmission on the above avoid the situation that the connection establishment conditions are too single, and the terminal equipment cannot enter the RRC connection state.

Please refer to FIG. 7, another resource configuration method provided by this embodiment of the application. This method can be applied to a terminal device that changes from an RRC connected state to an RRC idle state or an RRC inactive state, or the terminal device leaves the coverage of the network device. Scene. The method includes the following steps S701 to S702:

Step S701: The terminal device enters the RRC idle state or the RRC inactive state, or leaves the coverage of the network device.

In the embodiment of the present application, the terminal device entering the RRC idle state may include: the terminal device enters the RRC idle state from the RRC connected state, or the terminal device enters the RRC idle state from the RRC inactive state. The terminal device entering the RRC inactive state may include a situation in which the terminal device enters the RRC inactive state from the RRC connected state. The terminal device leaving the network device coverage can include the terminal device leaving the network device coverage from the RRC connected state, or the terminal device leaving the network device coverage from the RRC inactive state, or the terminal device leaving the network device coverage from the RRC idle state, etc. In this case, the embodiment of the present application does not limit this.

Step S702: The terminal device reserves the third transmission resource and/or the third transmission resource pool configured in the source cell.

Among them, the third transmission resource and the third transmission resource pool are respectively used to support side chain data transmission of the terminal device. The third transmission resource is a transmission resource scheduled by the second network device (such as the source network device) for the terminal device in the source cell, corresponding to the first resource configuration mode, and may be a dedicated transmission resource of the terminal device. The third transmission resource pool is a transmission resource pool configured by the second network device (such as the source network device) for the terminal device in the source cell, which can be used in the absence of network scheduling resources, and corresponds to the second resource configuration mode.

The third transmission resource may be a transmission resource that requires DCI to indicate activation or deactivation during configuration, or a transmission resource that does not require DCI to indicate activation or deactivation during configuration. In a possible design, the third transmission resource may be a configured grant, which is used to indicate the available time and frequency range of service transmission for the terminal device, and may be configured by the second network device through the RRC message based on the per cell and per BWP. Configured grant includes configured grant type1 and configured grant type2. Configured grant type1 does not require the DCI carried on the PDCCH to indicate activation or deactivation during configuration, and configured grant type2 requires the DCI carried on the PDCCH to indicate activation or deactivation during configuration . The third transmission resource pool is a collection of a period of time-frequency resources, and may include two parts: a sending resource pool and a receiving resource pool. In a possible design, the third transmission resource pool may be a resource pool configured by the second network device.

In this way, when the terminal device enters the RRC idle state or the RRC inactive state, it can retain the transmission resources and/or the transmission resource pool originally configured by the second network device, thereby better supporting business continuity and meeting data on the side link The transmission QoS requirement prevents the terminal device from directly releasing the resources configured by the second network device when the RRC state transition occurs, which affects the data transmission on the side link.

For a terminal device that leaves the coverage area of the network device, considering that the terminal device is outside the coverage area of the network device, it is unable to detect the system broadcast message sent by the network device. In this situation, the terminal device retains the transmission resources and/or the transmission resource pool configured by the second network device when it was originally in the coverage of the network device, which can effectively support the business continuity of the terminal device on the side link.

In the case that the terminal device leaves the coverage of the network device, the terminal device may also release the third transmission resource and/or the third transmission resource pool after the effective duration corresponding to the third transmission resource and/or the third transmission resource pool, respectively . It should be understood that the effective duration corresponding to the third transmission resource and the third transmission resource pool may be the same or different, and both can be set by those skilled in the art according to actual needs, which is not specifically limited in this application. Exemplarily, when the terminal device leaves the coverage area of the network device, a timer may be activated to set the effective duration of the third transmission resource and/or the third transmission resource pool. When the effective duration of the timer reminder arrives, the third transmission resource and/or the third transmission resource pool are released.

In a possible design, the terminal device may receive the RRC message sent by the first network device (such as the target network device), and determine the third transmission resource and/or the effective duration corresponding to the third transmission resource pool according to the RRC message. The RRC message includes information indicating the effective duration of the third transmission resource and/or the third transmission resource pool respectively; and/or, the terminal device may also receive the system broadcast message sent by the first network device, according to the system The broadcast message determines the effective duration corresponding to the third transmission resource and/or the third transmission resource pool, and the system broadcast message includes information for indicating the effective duration corresponding to the third transmission resource and/or the third transmission resource pool respectively; And/or, the terminal device may obtain the third transmission resource pre-configured in the terminal device and/or the effective duration corresponding to the third transmission resource pool. Optionally, the terminal device may determine the validity of the third transmission resource and/or the third transmission resource pool according to the received RRC message or system broadcast message, or obtain the pre-configuration before leaving the coverage of the network device. duration. In this way, the effective duration of the third transmission resource and/or the third transmission resource pool can be configured through a variety of possible implementation methods, so as to avoid the setting of the effective duration from being too singular, and the terminal device will be delayed after leaving the coverage of the network device. The problem of releasing the reserved transmission resources and/or the transmission resource pool effectively improves the resource utilization of the system.

Optionally, the terminal device may also set priorities for various implementations of obtaining the effective duration (which can also be understood as the way or source of obtaining the effective duration). For example, the priority may be that the priority of the RRC message is greater than the priority of the system broadcast message, and the priority of the system broadcast message is greater than the priority of the pre-configured parameter. In this way, the terminal device can use the value configured in the manner with the highest priority as the final value of the effective duration. For example, if the terminal device receives an RRC message for configuring the valid duration, it can determine the valid duration according to the RRC message; if it does not receive the RRC message for configuring the valid duration, but it receives a system broadcast for configuring the valid duration Message, the effective duration can be determined according to the system broadcast message; otherwise, if the RRC message for configuring the effective duration is not received, and the system broadcast message for configuring the effective duration is not received, the pre-configured terminal device can be obtained Effective duration. In this way, since the terminal device may receive one, two, or even zero of the RRC message and the system broadcast message used to configure the effective duration, setting the priority for various implementations of the effective duration configuration can ensure successful setting The effective duration of the third transmission resource and/or the third transmission resource pool is such that after the terminal device leaves the coverage of the network device, these resources can be released after the corresponding effective duration, thereby improving the resource utilization of the system.

When the terminal device enters the RRC idle state or the RRC inactive state, the terminal device may receive a sixth message sent by the second network device (such as the source network device), and the sixth message is used for RRC connection release or RRC connection suspension. Exemplarily, if the terminal device enters the RRC idle state, the sixth message can be used for RRC connection release. At this time, the sixth message can also be called an RRC connection release message (RRC release message); if the terminal device enters the RRC inactive state, The sixth message may be used to suspend the RRC connection. In this case, the sixth message may be called an RRC connection release message, or may also be called an RRC connection suspension message, or may have other names, which is not specifically limited. Optionally, before the terminal device leaves the RRC connected state and enters the RRC idle state or the RRC inactive state, the second network device may send the sixth message to the terminal device.

In a possible design, the sixth message may include information for indicating the first area, and the first area is specifically that the terminal device is allowed to continue to use the third transmission resource and/or the first area when cell reselection occurs. 3. The area range of the transmission resource pool. The first area may include one or more cells.

Exemplarily, when the terminal device is converted from the RRC connected state to the RRC inactive state, in order to better support the mobility of the terminal device in the RRC inactive state, the first area may specifically be the first radio access network Notification area (RAN-based notification area, RNA) area. When the terminal device moves in the first RNA area and cell reselection occurs, it may continue to use the reserved third transmission resource and/or the third transmission resource pool to transmit data. The first RNA area may be indicated by celllist information carried in the RAN-NotificationAreaInfo information element (information element, IE) in the RRC connection suspension message, or may be indicated by the RAN area ID information carried in the system broadcast message.

In another example, when the terminal device is converted from the RRC connected state to the RRC idle state, in order to better support the mobility of the terminal device in the RRC idle state, the first area may specifically be the first effective area. The first effective region functions similarly to the first RNA region. When cell reselection occurs when the terminal device moves in the first effective area, it can continue to use the reserved third transmission resource and/or the resources in the third transmission resource pool to transmit data, but the terminal device is currently in the RRC idle state. It should be understood that the first effective area may be indicated by the information carried in the RRC connection release message or the information carried in the system broadcast message, and the first effective area may also have other names, which is not specifically limited in this application.

Optionally, as shown in FIG. 8, when the terminal device enters the RRC idle state or the RRC inactive state, in step S801, the terminal device may send a fourth message to the first network device, and the fourth message is used for The RRC connection is established or the RRC connection is restored to enter the RRC connection state again. The fourth message may include information for indicating the third transmission resource and/or the third transmission resource pool.

In step S602, the first network device may send a fifth message for responding to the fourth message to the terminal device, where the fifth message includes instructions for indicating whether the terminal device continues to use the third transmission resource after accessing the target cell. And/or the third transmission resource pool information. Exemplarily, if the terminal device was in the RRC idle state before, the fourth message may be used for RRC connection establishment. At this time, the fourth message may also be called an RRC connection establishment message, and the fifth message may also be called an RRC connection establishment response message; If the terminal device was in the RRC inactive state before, the fourth message can be used for RRC connection recovery. At this time, the fourth message can also be called an RRC connection recovery message, and the fifth message can also be called an RRC connection recovery response message.

In the case where the first network device determines that the terminal device can use the third transmission resource and/or the third transmission resource pool after accessing the target cell, the fifth message may include third indication information, and the third indication information is used for Instruct the terminal device to use the third transmission resource and/or the third transmission resource pool after accessing the target cell. Alternatively, it can also be understood as instructing the terminal device to still reserve the third transmission resource and/or the third transmission resource pool after accessing the target cell.

In the case that the first network device decides that the terminal device does not use the third transmission resource and/or the third transmission resource pool after accessing the target cell, the fifth message includes fourth indication information, which is used to indicate The fourth transmission resource and/or the fourth transmission resource pool reconfigured by the first network device for the terminal device in the target cell.

Among them, the fourth transmission resource and the fourth transmission resource pool are respectively used to support side chain data transmission of the terminal device. The fourth transmission resource is a transmission resource scheduled by the first network device for the terminal device in the target cell, corresponding to the first resource configuration mode, and is a dedicated transmission resource for the terminal device. The fourth transmission resource pool is a transmission resource pool configured by the first network device for the terminal device in the target cell, which can be used when there is no network scheduling resource, and corresponds to the second resource configuration mode. Similarly, the fourth transmission resource may be a transmission resource that requires DCI to indicate activation or deactivation during configuration, or a transmission resource that does not require DCI to indicate activation or deactivation during configuration. In a possible design, the fourth transmission resource may be a configured grant, which is used to indicate the available time and frequency range of service transmission for the terminal device, and may be configured by the first network device through the RRC message based on the per cell and per BWP. Configured grant includes configured grant type1 and configured grant type2. Configured grant type1 does not require the DCI carried on the PDCCH to indicate activation or deactivation during configuration, and configured grant type2 requires the DCI carried on the PDCCH to indicate activation or deactivation during configuration . The fourth transmission resource pool is a collection of a segment of time-frequency resources, and may include two parts: a sending resource pool and a receiving resource pool. In a possible design, the fourth transmission resource pool may be a resource pool configured by the first network device.

In this way, when the terminal device requests RRC connection establishment or RRC connection recovery, the fourth message may carry the current resource configuration of the terminal device, that is, the information used to indicate the currently reserved transmission resources and/or the transmission resource pool. The network device decides whether to continue to use the current resource configuration or to reconfigure a new transmission resource or transmission resource pool, so as to effectively support the business continuity of the terminal device and meet the QoS requirements of the business.

As shown in FIG. 8, after the first network device receives the fourth message sent by the terminal device, in step S803, the first network device may carry information for indicating the third transmission resource and/or the third transmission resource pool, Send a resource configuration release message to the second network device to notify the first network device to release the third transmission resource and/or the third transmission resource pool. Furthermore, in step S804, the first network device may receive a resource configuration release response message sent by the second network device. In this way, it is convenient for the second network device to allocate the released third transmission resources and/or resources in the third transmission resource pool to other terminal devices in the source cell for use, thereby effectively improving resource utilization. Exemplarily, in the case where the first area is indicated in the fourth message, the first network device may carry information indicating the third transmission resource and/or the third transmission resource pool to one or the other in the first area Multiple network devices send a resource configuration release message, and receive a resource configuration release response message sent by one or more network devices in the first area.

In a possible design, the terminal device may send a fourth message when leaving the first area and entering the second area to request the establishment of the RRC connection. The second area may also include at least one cell, but the second area does not overlap with the first area.

For example, if the terminal device previously switched from the RRC connected state to the RRC inactive state, when the terminal device leaves the first RNA region and enters the second RNA region (the second RNA region is different from the first RNA region), the RNA update process can be triggered. Exemplarily, the RNA update process may include: the terminal device sends a fourth message to the first network device for RRC connection establishment, and the fourth message includes the third transmission resource and/or third transmission resource reserved by the terminal device. Transmission resource pool information; after receiving the fourth message, the second network device can send a resource configuration release message to the second network device through the Xn interface between the network devices to notify the second network device to release the third transmission resource and/ Or the third transmission resource pool; at the same time, the first network device can also decide whether the terminal device can continue to use the third transmission resource and/or the third transmission resource pool after the terminal device RRC connection is established; the first network device can send the terminal The device sends a fifth message in response to the RRC connection establishment request in the fourth message, and the fifth message includes information indicating whether to continue to use the third transmission resource and/or the third transmission resource pool; if the first network The device decides to use the third transmission resource and/or the third transmission resource pool. The fifth message includes third indication information. For example, the third indication information may be a 1-bit indication bit used to indicate acceptance of the current resource configuration; A network device decides not to use the third transmission resource and/or the third transmission resource pool. The fifth message includes fourth indication information for indicating the new resource configuration of the terminal device. For example, the fourth indication information may be used for Information indicating the fourth transmission resource and/or the fourth transmission resource pool re-allocated by the first network device to the terminal device. It should be noted that, considering that the terminal device can continue to use the third transmission resource and/or the third transmission resource pool when cell reselection occurs in the first RNA area, the first network device sends the resource configuration release to the second network device The message may also be that the first network device sends a resource configuration release message to all network devices in the first RNA area, so that all network devices in the first RNA area release the third transmission resource and/or the third transmission resource Pool, thereby improving resource utilization.

In another possible design, considering that the terminal device in the RRC idle state or the RRC inactive state can select resources from the configured third transmission resource pool for side-chain data transmission, and select from the third transmission resource pool The resources may not guarantee data transmission for services with high QoS requirements. Therefore, a terminal device in the RRC idle state can send a fourth message for establishing an RRC connection to the first network device when the preset conditions for triggering the connection are met; When the condition for triggering the connection is sent to the first network device, a fourth message for RRC connection recovery is sent. When an RRC connection is established between the terminal device and the first network device, and the RRC idle state or RRC inactive state is switched to the RRC connected state, the resource configuration mode will change accordingly, and the terminal device can use the first resource configuration mode , Request the first network device to schedule dedicated transmission resources for it, so as to better support the QoS requirements of the service.

The conditions for triggering the connection provided in the embodiments of the present application may include one or more of the following:

Condition 1: When using the resources in the third transmission resource pool to transmit data, the channel state information is worse than or worse than the first threshold, or the degree of channel congestion is greater than or equal to the second threshold.

In the embodiment of the present application, satisfying condition 1 means that the channel quality on the current side link is poor, and the side chain data transmission of the existing service may not be guaranteed. The reason may be that terminal devices that use similar transmission resources are close together and interfere with each other more severely, or there are more terminal devices in the same area. The third transmission resource pool cannot support the service transmission of these terminal devices, so terminal devices are required Initiate an RRC connection establishment request or an RRC connection recovery request.

In a possible design, the terminal device can determine the current channel quality according to the received channel state information (CSI). If the channel state information is worse than or equal to the first threshold, the channel quality If it is worse, it needs to request RRC connection establishment or RRC connection recovery. The terminal equipment can also measure the degree of channel congestion on the configured transmission resource pool. For example, the degree of channel congestion can be the channel busy rate (CBR). When the degree of channel congestion is greater than or equal to the second threshold, the channel The quality is poor, and RRC connection establishment or RRC connection recovery needs to be requested. When the terminal device sends the fourth message to the network device, the RRC connection establishment request or the RRC connection recovery request, the fourth message may also carry auxiliary information for indicating the current network status (such as the measured channel congestion degree, etc.) , So as to facilitate the first network device to configure appropriate dedicated transmission resources for it.

Condition 2: The third transmission resource pool does not meet or cannot support the QoS requirements of the new service.

In the embodiment of this application, the third transmission resource pool does not meet or cannot support the QoS requirements of the new service, which may include: the transmission delay required by the new service is less than or equal to the third threshold, and the reliability required by the new service ( Reliability) is greater than or equal to the fourth threshold, the transmission rate required by the new business (data rate) is greater than or equal to the fifth threshold, the communication distance required by the new business (mimimum required communication range) is greater than or equal to the sixth threshold, and the new business One or more of the corresponding one or more QoS parameters exceeding the seventh threshold range or not in the range of the configuration list. Wherein, the one or more QoS parameters here may include one or more of PQI, VQI, 5QI, QFI, GFBR, MFBR, and so on.

The reason for not meeting or failing to support the QoS requirements of the new service may be higher QoS parameters required by the new service, for example, lower transmission delay, higher reliability, higher transmission rate, and larger Communication distance, etc., cannot be realized on the resources selected based on the currently configured transmission resource pool, and network equipment is required to configure more appropriate transmission resources to meet the requirements of new services.

Condition 3: The service transmission pattern (traffic pattern) changes.

The service transmission mode includes various types of information such as the period of service transmission (periodicity), the amount of data transmitted by the service, the time information of service transmission, and the frequency information of service transmission. Among them, the transmission period of the service is used to indicate the estimated time interval for the data of the service to arrive on the logical channel. For example, it can include various values such as 20ms, 50ms, 100ms, 200ms, or even 1000ms, which is not specifically limited; the service transmission data The amount information may be the size or data length of a transport block (TB) configured for the service, such as messagesize information; the time information of service transmission is used to indicate the time position of service transmission, for example, it may be timingoffset information.

Changes in the service transmission mode may include: changes in one or more of the period of service transmission (periodicity), data volume information of service transmission, time information of service transmission, and frequency information of service transmission. Due to changes in the service transmission mode, the transmission resource pool configured in the system broadcast message may no longer meet or no longer meet the requirements of service transmission. Therefore, the terminal device needs to request RRC connection establishment or RRC connection recovery, so that the network device is configured with dedicated transmission resources. Exemplarily, the change in the service transmission mode may be that the service transmission period changes from 100 ms to 50 ms or 20 ms.

It should be understood that in a scenario where the terminal device does not have the reserved third transmission resource pool and/or the third transmission resource, the terminal device in the RRC idle state can also send the third transmission resource to the first terminal device when the preset connection trigger condition is satisfied. A network device sends a fourth message for RRC connection establishment; a terminal device in the RRC inactive state can also send a fourth message to the first network device for RRC when the preset conditions for triggering the connection are met. The connection is restored.

An embodiment of the present application also provides a communication device. Please refer to FIG. 9, which is a schematic structural diagram of a communication device provided by an embodiment of this application. The communication device 900 includes a transceiver module 910 and a processing module 920.

The communication device can be used to implement the function related to the first network device in any of the foregoing method embodiments. For example, the communication device may be the first network device or a chip included in the first network device. Alternatively, the communication device may also be used to implement a function related to the second network device in any of the foregoing method embodiments. For example, the communication device may be the second network device or a chip included in the second network device.

When the communication device is used as the first network device to execute the method embodiment shown in FIG. 4, the transceiver module 910 is configured to receive the first message sent by the second network device, the first message is used for the handover request, and the first The message includes information used to indicate the first transmission resource and/or the first transmission resource pool configured in the source cell. The first transmission resource and the first transmission resource pool are respectively used to support side chain data transmission of the terminal device. A transmission resource is a transmission resource scheduled for a terminal device in the source cell, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control RRC connection state; the transceiver module 910 is also used to: Send a second message for responding to the handover request to the second network device; the processing module 920 is configured to perform an operation of deciding whether the terminal device continues to use the first transmission resource and/or the first transmission resource pool after handing over to the target cell.

When the communication device is used as the second network device and executes the method embodiment shown in FIG. 4, the transceiver module 910 is configured to send a first message to the first network device, and the first message includes instructions for indicating that it is in the source cell Information about the configured first transmission resource and/or the first transmission resource pool, where the first transmission resource and the first transmission resource pool are respectively used to support side-chain data transmission of the terminal device, and the first transmission resource is in the source cell. For the transmission resources scheduled by the terminal device, the first transmission resource pool is the transmission resource pool configured in the source cell, and the terminal device is in the radio resource control RRC connection state; the transceiver module 910 is also used to receive data sent by the first network device A second message in response to the handover request, where the second message includes information used to indicate whether the terminal device continues to use the first transmission resource and/or the first transmission resource pool after handing over to the target cell. The processing module 920 is configured to obtain the first transmission resource and/or the first transmission resource pool configured in the source cell.

It should be understood that the processing module 920 involved in the communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 910 may be implemented by a transceiver or transceiver-related circuit components. The operation and/or function of each module in the communication device is to implement the corresponding process of the method shown in FIG. 4, and is not repeated here for brevity.

Please refer to FIG. 10, which is a schematic diagram of another structure of a communication device provided in an embodiment of the application. The communication device may specifically be a network device, such as a base station. It is used to implement the function related to the first network device in the foregoing method embodiment, or is used to implement the function related to the second network device in the foregoing method embodiment.

The network equipment includes: one or more radio frequency units, such as a remote radio unit (RRU) 1001 and one or more baseband units (BBU) (also known as digital units, digital units, DU) )1002. The RRU 1001 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 10011 and a radio frequency unit 10012. The RRU 1001 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals. The part 1002 of the BBU is mainly used for baseband processing, control of the base station, and so on. The RRU 1001 and the BBU 1002 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 1002 is the control center of the base station, which may also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) 1002 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.

In an example, the BBU 1002 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access indication (such as an LTE network), or they may support different access standards. Wireless access network (such as LTE network, 5G network or other networks). The BBU 1002 may further include a memory 10021 and a processor 10022, and the memory 10021 is used to store necessary instructions and data. The processor 10022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the foregoing method embodiment. The memory 10021 and the processor 10022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

An embodiment of the present application also provides another communication device. Please refer to FIG. 11, which is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device 1100 includes a transceiver module 1110 and a processing module 1120.

The communication device can be used to implement the functions related to terminal equipment in any of the foregoing method embodiments. For example, the communication device may be a terminal device, such as a vehicle-mounted terminal device; the communication device may also be a chip included in the terminal device, or a device including the terminal device, such as various types of vehicles.

When the communication device is used as a terminal device to execute the method embodiment shown in FIG. 5, the processing module 1120 is used to obtain the condition for triggering the connection, and the condition includes one or more of the following: the system broadcast message does not include service When the transmission resource pool corresponding to the frequency point of interest and the transmission resource in the transmission resource pool corresponding to the frequency point of interest are used to transmit data, the channel state information is worse than or equal to the first threshold or the channel congestion degree is greater than or equal to the second threshold The transmission resource pool configured for the frequency of interest for the current service does not meet the QoS requirements of the new service, and the service transmission mode changes; the transceiver module 1110 is used to send a third message to the network device, and the third message is used for RRC The connection is established or the RRC connection is restored.

When the communication device is used as a terminal device to execute the method embodiment shown in FIG. 8, the processing module 1120 is configured to make the terminal device enter the radio resource control RRC idle state or the RRC inactive state, or leave the coverage of the network device; The processing module 1120 is also used to reserve the third transmission resource and/or the third transmission resource pool configured in the source cell, where the third transmission resource and the third transmission resource pool are respectively used to support the side chain data transmission of the terminal device , The third transmission resource is a transmission resource scheduled for the terminal device in the source cell, and the third transmission resource pool is a transmission resource pool configured in the source cell.

The processing module 1120 involved in the communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 1110 may be implemented by a transceiver or transceiver-related circuit components. The operations and/or functions of each module in the communication device are used to implement the corresponding procedures of the methods shown in FIG. 5 and FIG. 8 respectively. For the sake of brevity, details are not repeated here.

Please refer to FIG. 12, which is another schematic structural diagram of another communication device provided in an embodiment of this application. The communication device may specifically be a terminal device. It is easy to understand and easy to illustrate. In FIG. 12, the terminal device uses a mobile phone as an example. As shown in FIG. 12, the terminal device includes a processor, and may also include a memory, and of course, it may also include a radio frequency circuit, an antenna, an input and output device, and so on. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 12. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiver function can be regarded as the transceiver unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device. As shown in FIG. 12, the terminal device includes a transceiver unit 1210 and a processing unit 1220. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 1110 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1210 as the sending unit, that is, the transceiver unit 1210 includes a receiving unit and a sending unit. The transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit. It should be understood that the transceiving unit 1210 is used to perform the sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 1220 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.

An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the The chip system implements the method in any of the foregoing method embodiments.

Exemplarily, the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC). It can also be a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (microcontroller). The controller unit, MCU), may also be a programmable controller (programmable logic device, PLD) or other integrated chips.

It should be understood that each step in the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

The embodiment of the present application also provides a computer-readable storage medium, which stores computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute any of the foregoing method embodiments Method in.

The embodiments of the present application also provide a computer program product. When the computer reads and executes the computer program product, the computer is caused to execute the method in any of the foregoing method embodiments.

An embodiment of the present application also provides a communication system, which includes one or more of the terminal device, the first network device, and the second network device described in the foregoing method embodiments.

It should be understood that the processor mentioned in the embodiments of this application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), or application specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the processor.

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that, in the various embodiments of the present application, the size of the sequence number of the foregoing processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not be used in the embodiments of the present invention The implementation process constitutes any limitation.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the 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 are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: 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 code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A resource configuration method, characterized in that the method includes:

The first network device receives the first message sent by the second network device, the first message is used for a handover request, and the first message includes the first transmission resource and/or the first transmission configured in the source cell. Information about the resource pool, the first transmission resource and the first transmission resource pool are respectively used to support side-chain data transmission of the terminal device, and the first transmission resource is scheduled for the terminal device in the source cell The first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control RRC connection state;

The first network device sends a second message for responding to the handover request to the second network device, where the second message includes a second message for instructing the terminal device whether to continue to use the second network device after switching to the target cell. A transmission resource and/or information of the first transmission resource pool.
The method according to claim 1, wherein after the first network device determines that the terminal device is handed over to the target cell, the first transmission resource and/or the first transmission resource pool is used In this case, the second message includes first indication information, and the first indication information is used to instruct the terminal device to use the first transmission resource and/or the first transmission after switching to the target cell Resource pool.
The method according to claim 1 or 2, characterized in that the first transmission resource and/or the first transmission are not used after the first network device decides that the terminal device is handed over to the target cell In the case of a resource pool, the second message includes second indication information, and the second indication information is used to indicate the second transmission resource and/or the second transmission resource pool reconfigured in the target cell, so The second transmission resource and the second transmission resource pool are respectively used to support side chain data transmission of the terminal device, and the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, The second transmission resource pool is a transmission resource pool configured in the target cell.
The method according to any one of claims 1 to 3, wherein the first transmission resource and/or the first transmission resource pool is a measurement sent by the second network device from the terminal device Obtained from the report message, or the first transmission resource and/or the first transmission resource pool are determined by the second network device according to the identity of the terminal device.
The method according to any one of claims 1 to 4, wherein the first transmission resource and the second transmission resource are transmission resources that require downlink control information DCI to indicate activation or deactivation when configured, or It is not necessary for DCI to indicate activation or deactivation transmission resources during configuration;

The first transmission resource pool and the second transmission resource pool include a sending resource pool and a receiving resource pool.
A resource configuration method, characterized in that the method includes:

The second network device sends a first message to the first network device, the first message is used for a handover request, and the first message includes the first transmission resource and/or the first transmission resource configured in the source cell Pool information, the first transmission resource and the first transmission resource pool are respectively used to support side chain data transmission of the terminal device, and the first transmission resource is scheduled for the terminal device in the source cell Transmission resources, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control RRC connection state;

The second network device receives a second message sent by the first network device and used to respond to the handover request, where the second message includes a second message used to instruct the terminal device whether to continue using the handover request after switching to the target cell. The first transmission resource and/or the information of the first transmission resource pool.
The method according to claim 6, wherein the first network device decides to use the first transmission resource and/or the first transmission resource pool after the terminal device is handed over to the target cell In the case that the second message includes first indication information, the first indication information is used to instruct the terminal device to use the first transmission resource and/or the first transmission resource after switching to the target cell. A transmission resource pool.
The method according to claim 6 or 7, characterized in that, after the first network device decides not to use the first transmission resource and/or the first transmission resource after the terminal device is handed over to the target cell In the case of a transmission resource pool, the second message includes second indication information, and the second indication information is used to indicate the second transmission resource and/or the second transmission resource pool reconfigured in the target cell, The second transmission resource and the second transmission resource pool are respectively used to support side-chain data transmission of the terminal device after the handover is completed, and the second transmission resource is used for the terminal device in the target cell. For scheduled transmission resources, the second transmission resource pool is a transmission resource pool configured in the target cell.
The method according to any one of claims 6 to 8, wherein before the second network device sends the first message to the first network device, the method further comprises:

The second network device receives the measurement report message sent by the terminal device, and obtains the first transmission resource and/or the first transmission resource pool according to the measurement report message; or,

The second network device determines the first transmission resource and/or the first transmission resource pool according to the identifier of the terminal device.
The method according to any one of claims 6 to 9, wherein the first transmission resource and the second transmission resource are transmission resources that require downlink control information DCI to indicate activation or deactivation when configured, or No DCI activation indication or deactivated transmission resources are required during configuration;

The first transmission resource pool and the second transmission resource pool include a sending resource pool and a receiving resource pool.
A communication device, characterized in that the communication device includes:

The transceiver module is configured to receive a first message sent by a second network device, the first message is used for a handover request, and the first message includes a first transmission resource and/or a first message configured in the source cell. Information about the transmission resource pool, the first transmission resource and the first transmission resource pool are respectively used to support side-chain data transmission of the terminal device, and the first transmission resource is the source cell for the A transmission resource scheduled by a terminal device, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control RRC connection state;

A processing module, configured to send a second message for responding to the handover request to the second network device through the transceiver module, the second message including a second message for instructing the terminal device whether to continue after handover to the target cell Using the first transmission resource and/or the information of the first transmission resource pool.
The communication device according to claim 11, wherein the first transmission resource and/or the first transmission resource pool are used after the processing module determines that the terminal device is handed over to the target cell Next, the second message includes first indication information, and the first indication information is used to instruct the terminal device to use the first transmission resource and/or the first transmission resource after switching to the target cell Pool.
The communication device according to claim 11 or 12, wherein the first transmission resource and/or the first transmission resource are not used after the processing module determines that the terminal device is handed over to the target cell In the case of a pool, the second message includes second indication information, and the second indication information is used to indicate the second transmission resource and/or the second transmission resource pool reconfigured in the target cell. The second transmission resource and the second transmission resource pool are respectively used to support side chain data transmission of the terminal device, and the second transmission resource is a transmission resource scheduled for the terminal device in the target cell, so The second transmission resource pool is a transmission resource pool configured in the target cell.
The communication device according to any one of claims 11 to 13, wherein the first transmission resource and/or the first transmission resource pool are sent by the second network device from the terminal device Obtained from the measurement report message, or determined by the second network device according to the identifier of the terminal device.
The communication device according to any one of claims 11 to 14, wherein the first transmission resource and the second transmission resource are transmission resources that require downlink control information DCI to indicate activation or deactivation when configured; Or it is not necessary for DCI to indicate the transmission resources for activation or deactivation during configuration;

The first transmission resource pool and the second transmission resource pool include a sending resource pool and a receiving resource pool.
A communication device, characterized in that the communication device includes:

The processing module is configured to send a first message to the first network device through the transceiver module, where the first message is used for a handover request, and the first message includes the first transmission resource configured in the source cell and/or Information about the first transmission resource pool, the first transmission resource and the first transmission resource pool are respectively used to support side-chain data transmission of the terminal device, and the first transmission resource is in the source cell For transmission resources scheduled by the terminal device, the first transmission resource pool is a transmission resource pool configured in the source cell, and the terminal device is in a radio resource control RRC connection state;

The transceiver module is further configured to receive a second message sent by the first network device for responding to the handover request, and the second message includes a second message for instructing the terminal device whether to continue to use it after switching to the target cell. The information of the first transmission resource and/or the first transmission resource pool.
The communication device according to claim 16, wherein the first network device decides to use the first transmission resource and/or the first transmission resource after the terminal device is handed over to the target cell In the case of a pool, the second message includes first indication information, and the first indication information is used to instruct the terminal device to use the first transmission resource and/or the first transmission resource after switching to the target cell. The first transmission resource pool.
The communication device according to claim 16 or 17, wherein the first network device decides not to use the first transmission resource and/or the first transmission resource after the terminal device is handed over to the target cell. In the case of a transmission resource pool, the second message includes second indication information, and the second indication information is used to indicate the second transmission resource and/or the second transmission resource pool reconfigured in the target cell The second transmission resource and the second transmission resource pool are respectively used to support side-chain data transmission of the terminal device after the handover is completed, and the second transmission resource is used for the terminal in the target cell. For transmission resources scheduled by the device, the second transmission resource pool is a transmission resource pool configured in the target cell.
The communication device according to any one of claims 16 to 18, characterized in that, before sending the first message to the first network device,

The transceiver module is further configured to receive a measurement report message sent by the terminal device; the processing module is further configured to obtain the first transmission resource and/or the first transmission resource pool according to the measurement report message ;or,

The processing module is further configured to determine the first transmission resource and/or the first transmission resource pool according to the identifier of the terminal device.
The communication device according to any one of claims 16 to 19, wherein the first transmission resource and the second transmission resource are transmission resources that require downlink control information DCI to indicate activation or deactivation when configured; Or the DCI does not need to indicate activation or deactivation transmission resources during configuration;

The first transmission resource pool and the second transmission resource pool include a sending resource pool and a receiving resource pool.
A resource configuration method, characterized in that the method includes:

The terminal device obtains the conditions for triggering the connection, where the conditions include one or more of the following:

The system broadcast message does not include the transmission resource pool corresponding to the frequency of interest for the service. When the transmission resource in the transmission resource pool corresponding to the frequency of interest for the service is used to transmit data, the channel state information is worse than or equal to the first threshold, Or the degree of channel congestion is greater than or equal to the second threshold, the transmission resource pool configured for the frequency of interest for the current service does not meet the QoS requirements of the new service, and the service transmission mode changes;

The terminal device sends a third message to the network device, where the third message is used for radio resource control RRC connection establishment or RRC connection recovery.
The method according to claim 21, wherein the transmission resource pool configured for the frequency points of interest for the current service does not meet the QoS requirements of the new service, comprising:

The transmission delay required by the new service is less than or equal to the third threshold; or, the reliability required by the new service is greater than or greater than or equal to the fourth threshold; or, the transmission rate required by the new service is greater than or equal to the first threshold. Five thresholds; or, the communication distance required by the new service is greater than the sixth threshold; or, of the one or more QoS parameters corresponding to the new service exceeds the seventh threshold or is not in the configuration list;

The change in the service transmission mode includes:

One or more of the service transmission period, the data volume information of the service transmission, the time information of the service transmission, and the frequency information of the service transmission are changed.
The method according to claim 21 or 22, wherein, for any one or more parameters including the first threshold to the seventh threshold and the configuration list, the method further comprises:

The terminal device receives the RRC message sent by the network device, where the RRC message includes any one or more parameters; and/or,

The terminal device receives a system broadcast message sent by the network device, where the system broadcast message includes any one or more parameters; and/or,

The terminal device obtains the any one or more parameters pre-configured on the terminal device.
The method of claim 23, wherein the method further comprises:

Determining, by the terminal device, the value of any one or more parameters according to the received RRC message;

If the terminal device does not receive the RRC message, determine the value of any one or more parameters according to the system broadcast message;

If the terminal device does not receive the RRC message, and does not receive the system broadcast message, acquire any one or more pre-configured parameters.
A communication device, characterized in that the device includes:

The processing module is used to obtain the conditions for triggering the connection, where the conditions include one or more of the following: the system broadcast message does not include the transmission resource pool corresponding to the frequency of interest for the business, and is used as the frequency of interest for the business When the transmission resource in the corresponding transmission resource pool transmits data, the channel state information is worse than or worse than the first threshold, or the channel congestion degree is greater than or greater than or equal to the second threshold, the transmission resource pool configured for the frequency of interest of the current service The QoS requirements of the new service are not met, and the service transmission mode changes;

The transceiver module is configured to send a third message to the network device, where the third message is used for radio resource control RRC connection establishment or RRC connection recovery.
The communication device according to claim 25, wherein the transmission resource pool configured for the frequency points of interest for the current service does not meet the QoS requirements of the new service, comprising:

The transmission delay required by the new service is less than or equal to the third threshold; or, the reliability required by the new service is greater than or greater than or equal to the fourth threshold; or, the transmission rate required by the new service is greater than or equal to the first threshold. Five thresholds; or, the communication distance required by the new service is greater than the sixth threshold; or, of the one or more QoS parameters corresponding to the new service exceeds the seventh threshold or is not in the configuration list;

The change in the service transmission mode includes:

One or more of the service transmission period, the data volume information of the service transmission, the time information of the service transmission, and the frequency information used for the service transmission changes.
The communication device according to claim 25 or 26, wherein for any one or more parameters including the first threshold to the seventh threshold and the configuration list, the transceiver module further uses in:

Receiving an RRC message sent by a network device, where the RRC message includes any one or more parameters; and/or,

Receiving a system broadcast message sent by the network device, where the system broadcast message includes any one or more parameters; and/or,

Acquiring the any one or more parameters pre-configured on the terminal device.
The communication device according to claim 27, wherein the processing module is further configured to:

Determine the value of any one or more parameters according to the RRC message;

If the transceiver module does not receive the RRC message, determine the value of any one or more parameters according to the system broadcast message;

If the transceiver module does not receive the RRC message and does not receive the system broadcast message, acquire any one or more of the pre-configured parameters.