TWI703889B - Resource selection method and user terminal - Google Patents

Abstract

The present invention provides a resource selection method and a user terminal. The method includes: before the user terminal starts sending a first service, selecting baseband parameters according to preset rules; the first service is a collaborative information interaction service; Then, determine the transmission carrier and/or part of the bandwidth; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth.

Description

Resource selection method and user terminal

The invention belongs to the field of communication technology, and particularly relates to a resource selection method and a user terminal.

With the development and change of mobile communication service requirements, organizations such as ITU (International Telecommunication Union) and 3GPP have begun to study new wireless communication systems (for example, 5G NR, 5 Generation New RAT). As we all know, in the LTE-V2X communication system in the related technology, resource selection mainly on a single carrier cannot meet the low-latency requirements of the cooperative driving service. Therefore, there is an urgent need to solve the problem of resource selection for collaborative information interactive service delivery in the NR system to meet the low-latency requirements of collaborative driving services.

The embodiment of the present invention provides a resource selection method and a user terminal to solve the problem of resource selection for cooperative information interactive service transmission in the NR system.

The embodiment of the present invention provides a resource selection method applied to a user terminal, including: before the user terminal starts sending the first service, selecting baseband parameters according to preset rules numerology; the first service is a collaborative information interaction service; after selecting baseband parameters, determine the transmission carrier and/or part of the bandwidth; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth.

Optionally, the baseband parameters include a first baseband parameter of control signaling SA (Scheduling Assignment) and a second baseband parameter of data.

Optionally, the preset rule includes any one of the following: the first baseband parameter is selected according to the correspondence between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; according to the correspondence between the condition parameter and the target object The relationship selects the second baseband parameter. The first baseband parameter is configured by the network side device or a fixed parameter value agreed upon by agreement; the first baseband parameter and the second baseband parameter are selected according to the corresponding relationship between the condition parameter and the target object. The baseband parameters are the same as or different from the second baseband parameters; in the case of receiving SA or data indicating the first service sent by other user terminals except the user terminal, the received SA baseband parameters are used as For the first baseband parameter, the baseband parameter of the received data is used as the second baseband parameter; in the case of receiving a synchronization signal indicating the first service sent by a user terminal other than the user terminal, The baseband parameters of the synchronization signal are used as the first baseband parameters and the second baseband parameters; where the target object is the network side device configuration or an optional baseband parameter configuration agreed upon by the agreement, and the baseband parameter configuration includes time-domain resource minute configuration and frequency The domain resource sub-carrier interval configuration, the condition parameter includes at least one of service delay requirement, data transmission rate requirement, reliability requirement, QoS (Quality of Service), and the moving speed of the user terminal.

Optionally, the foregoing selecting the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth includes: determining the first candidate time-frequency resource in the resource selection window on the carrier and/or part of the bandwidth ; Perform the elimination of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource; perform the S-RSSI (Sidelink Received Signal Strength Indicator) on the second candidate time-frequency resource Measure, select the first N second candidate time-frequency resources with the lowest S-RSSI measurement value; select the target time-frequency resource for sending the first service from the N second candidate time-frequency resources; where N is a positive integer, and N is based on The preset ratio of the first candidate time-frequency resource is determined.

Optionally, the aforementioned exclusion of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource includes: excluding the first occupied resource from the first candidate time-frequency resource, and the first occupied resource includes At least one of the first sub-time-frequency resource and the second sub-time-frequency resource; after the first occupied resource is excluded, the second occupied resource is excluded from the first candidate time-frequency resource to obtain the second candidate time-frequency resource , The second occupied resource is an unavailable resource specified by LTE-V2X; wherein, the first sub-time-frequency resource includes all resources on the time domain resource where the first transmission resource is located, and the first transmission resource is the user terminal Other received resources indicating the occupation and/or reserved resources indicated by SA or data indicating the first service of the same system; the second sub-time-frequency resource includes all resources on the time domain resource where the second transmission resource is located, and the second transmission The resource is the resource occupied and/or reserved by the user terminal for sending the second service, and the second service is other than the first service His business.

Optionally, no measurement of the physical sidelink shared channel (PSSCH)-RSRP (Reference Signal Receiving Power) of the physical sidelink shared channel is performed on the first occupied resource.

Optionally, after the foregoing selection of the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth, the method further includes: if the target time-frequency resource is the same as the resource sent by the second service of the user terminal If the segment is overrun in the time domain, the sending of the second service is abandoned, and the second service is a service other than the first service.

Optionally, after the foregoing selection of the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth, the method further includes: if other SA or data indicating the driving service of the same system has been received And/or the reserved transmission resources overlap with the resources transmitted by the second service of the user terminal in the time domain, then the transmission of the second service is abandoned, and the second service is other than the first service business.

Optionally, the SA of the first service is used to indicate the transmission parameters of the first service; the transmission parameters include at least one of the following: SA transmission frequency band indication; SA transmission carrier indication; SA transmission partial bandwidth BWP (Band Width Part ) Indication; SA sending time-frequency resource indication; data sending frequency band indication; data sending carrier indication; Data sending part of the bandwidth BWP indication; data sending time-frequency resource indication; coding and modulation indication; priority order indication.

Optionally, the sending parameter further includes: setting the priority of the first service to the highest priority in the priority field in the SA; or, adding a new indication field in the SA to indicate what the SA indicates Data is the first business.

Optionally, the SA and data in the first service are in a TDM (Time Division Multiplexing) and/or FDM (Frequency Division Multiplexing) manner.

An embodiment of the present invention also provides a user terminal, including: a baseband parameter selection module, used to select baseband parameters according to preset rules before the user terminal starts sending the first service; the first service is collaborative information interaction Service; determination module, used to determine the transmission carrier and/or part of the bandwidth after selecting baseband parameters; resource selection module, used to select the target of sending the first service on the carrier and/or part of the bandwidth Frequency resources.

Optionally, the baseband parameters include the first baseband parameters of the control signaling SA and the second baseband parameters of the data data.

Optionally, the preset rule includes any one of the following: selecting the first baseband parameter according to the corresponding relationship between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; The second baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object. The first baseband parameter is configured by the network side device or a fixed parameter value agreed upon by agreement; the first baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object. And the second baseband parameter, the first baseband parameter is the same or different from the second baseband parameter; in the case of receiving SA or data indicating the first service sent by another user terminal except the user terminal, The baseband parameters of the received SA are used as the first baseband parameters, and the baseband parameters of the received data are used as the second baseband parameters; after receiving instructions sent by other user terminals except the user terminal, the first In the case of service synchronization signals, the baseband parameters of the synchronization signals are used as the first baseband parameters and the second baseband parameters; where the target object is the network side device configuration or the optional baseband parameter configuration agreed upon by the agreement, and the baseband parameter configuration Including time-domain resource minute configuration and frequency-domain resource sub-carrier spacing configuration, the condition parameters include at least one of service delay requirements, data transmission rate requirements, reliability requirements, service quality QoS, and mobile speed of the user terminal.

The embodiment of the present invention also provides a user terminal, which includes a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor, The processor is used to read the program in the memory and execute the following process: before the user terminal starts sending the first service, select baseband parameters according to preset rules; the first service is a collaborative information interaction service; when selecting baseband parameters Then, determine the transmission carrier and/or part of the bandwidth; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth; or, The transceiver is used to select baseband parameters according to preset rules before the user terminal starts to send the first service; the first service is a collaborative information interaction service; after the baseband parameters are selected, determine the transmission carrier and/or part of the bandwidth ; Select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth.

Optionally, the baseband parameters include the first baseband parameters of the control signaling SA and the second baseband parameters of the data data.

Optionally, the preset rule includes any one of the following: the first baseband parameter is selected according to the correspondence between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; according to the correspondence between the condition parameter and the target object The relationship selects the second baseband parameter. The first baseband parameter is configured by the network side device or a fixed parameter value agreed upon by agreement; the first baseband parameter and the second baseband parameter are selected according to the corresponding relationship between the condition parameter and the target object. The baseband parameters are the same as or different from the second baseband parameters; in the case of receiving SA or data indicating the first service sent by other user terminals except the user terminal, the received SA baseband parameters are used as For the first baseband parameter, the baseband parameter of the received data is used as the second baseband parameter; in the case of receiving a synchronization signal indicating the first service sent by a user terminal other than the user terminal, The baseband parameters of the synchronization signal are used as the first baseband parameters and the second baseband parameters; where the target object is the network side device configuration or an optional baseband parameter configuration agreed upon by the agreement, and the baseband parameter configuration includes time-domain resource minute configuration and frequency Domain resource sub-carrier spacing configuration, the condition parameters include service delay requirements, data transmission rate requirements, reliability requirements, service products At least one of quality QoS and the moving speed of the user terminal.

Optionally, the foregoing selecting the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth includes: determining the first candidate time-frequency resource in the resource selection window on the carrier and/or part of the bandwidth ; Exclude the occupied resources for the first candidate time-frequency resource to obtain the second candidate time-frequency resource; perform S-RSSI measurement on the second candidate time-frequency resource, and select the first N-th with the lowest S-RSSI measurement value Two candidate time-frequency resources; select the target time-frequency resource for sending the first service from the N second candidate time-frequency resources; where N is a positive integer, and N is determined according to the preset ratio of the first candidate time-frequency resource.

Optionally, the aforementioned exclusion of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource includes: excluding the first occupied resource from the first candidate time-frequency resource, and the first occupied resource includes At least one of the first sub-time-frequency resource and the second sub-time-frequency resource; after the first occupied resource is excluded, the second occupied resource is excluded from the first candidate time-frequency resource to obtain the second candidate time-frequency resource , The second occupied resource is an unavailable resource specified by LTE-V2X; wherein, the first sub-time-frequency resource includes all resources on the time domain resource where the first transmission resource is located, and the first transmission resource is the user terminal Other received resources indicating the occupation and/or reserved resources indicated by SA or data indicating the first service of the same system; the second sub-time-frequency resource includes all resources on the time domain resource where the second transmission resource is located, and the second transmission The resource is the resource occupied and/or reserved by the user terminal for sending the second service, and the second service is other than the first service His business.

Optionally, no PSSCH-RSRP measurement is performed on the first occupied resource.

Optionally, the processor is also used to read the program in the memory, and execute the following process: if the target time-frequency resource and the resource sent by the second service of the user terminal are in the time domain, then abandon the For the transmission of the second service, the second service is a service other than the first service; or, the transceiver is also used if the target time-frequency resource and the user terminal's second service transmission resource are in time If the domain overruns the segment, the sending of the second service is abandoned, and the second service is a service other than the first service.

Optionally, the processor is also used to read the program in the memory and execute the following process: If the occupied and/or reserved transmission resources indicated by other SA or data indicating the driving service of the same system are received If the user terminal's resources for sending the second service overlap in the time domain, the sending of the second service is abandoned. The second service is a service other than the first service; the transceiver is also used if If the received other SA or data indicating driving services of the same system overlaps the occupied and/or reserved transmission resources with the resources transmitted by the second service of the user terminal in the time domain, the second service is abandoned. Send, the second service is a service other than the first service.

Optionally, the SA of the first service is used to indicate the sending parameter of the first service; the sending parameter includes at least one of the following: SA sends frequency band indication; SA sends carrier indication; SA sends partial bandwidth BWP indication; SA sends time-frequency resource indication; data sends frequency band indication; data sends carrier indication; data sends partial bandwidth BWP indication; data sends time-frequency resource indication; Code modulation indication; priority order indication.

Optionally, the sending parameter further includes: setting the priority of the first service to the highest priority in the priority field in the SA; or, adding a new indication field in the SA to indicate what the SA indicates Data is the first business.

Optionally, the multiplexing mode of SA and data in the first service is time division multiplexing TDM and/or frequency division multiplexing FDM.

The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above resource selection method are realized.

In the embodiment of the present invention, before the user terminal starts sending the first service, baseband parameters are selected according to preset rules; the first service is a cooperative information interaction service; after the baseband parameters are selected, the transmission carrier and/or partial frequency are determined Wide; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth. In this way, collaborative information interaction can be realized in the NR system Resource selection for service delivery, while supporting flexible baseband parameter configuration, can meet the low latency requirements of cooperative driving services.

201~203‧‧‧Step

11‧‧‧User terminal

12‧‧‧Network side equipment

300‧‧‧User Terminal

301‧‧‧Baseband parameter selection module

302‧‧‧Determine Module

303‧‧‧Resource Selection Module

400‧‧‧Processor

410‧‧‧Memory

420‧‧‧Transceiver

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without making progressive labor.

Figure 1 is a schematic diagram of a network structure applicable to an embodiment of the present invention; Figure 2 is a flowchart of a resource selection method provided by an embodiment of the present invention; Figure 3 is a structural diagram of a user terminal provided by an embodiment of the present invention; Figure 4 It is a structural diagram of another user terminal provided by an embodiment of the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making progressive labor fall within the protection scope of the present invention.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a network structure applicable to an embodiment of the present invention. As shown in FIG. 1, it includes a user terminal (User Equipment, UE) 11 and a network side device 12. The user terminal 11 may be a terminal-side device such as a mobile phone or a vehicle-mounted terminal. It should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present invention. The network side equipment 12 can be a base station, such as a large base station, LTE eNB, 5G NR NB, etc.; the network side equipment 12 can also be a small base station, such as low power node (LPN) pico, femto, etc. Station, or network side device 12 can access point (AP, access point); base station can also be a central unit (Central Unit, CU) and its management and control multiple transmission reception points (Transmission Reception Point, TRP) common Composed of network nodes. It should be noted that the specific type of the network side device 12 is not limited in the embodiment of the present invention.

Referring to Figure 2, Figure 2 is a flow chart of a resource selection method according to an embodiment of the present invention. As shown in Figure 2, it includes the following steps: Step 201: Before the user terminal starts sending the first service, follow a preset rule Select baseband parameters; the first service is a collaborative information interaction service; in this embodiment, each user terminal participating in the collaborative information interaction service is set with a trigger condition, and the trigger condition is used to trigger the user terminal to send the collaborative information interaction service . Specifically, the trigger condition can be configured by the network side device, or can be agreed through an agreement. The specific content of the trigger condition can be set according to actual needs, and no further limitation is made here.

In this embodiment, the aforementioned baseband parameters may include the first baseband parameters of the control signaling SA and the second baseband parameters of the data data.

It should be noted that the above-mentioned first baseband parameter and the second baseband parameter may be the same or different. The foregoing preset rules can be set according to actual needs. In this embodiment, the foregoing preset rules include multiple rules. Specifically, the preset rules include any one of the following: Rule 1: According to the correspondence between conditional parameters and target objects Select the first baseband parameter, the The first baseband parameter is the same as the second baseband parameter; Rule 2: The second baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object, and the first baseband parameter is configured by the network side device or a fixed parameter value agreed upon by agreement; Rule three : According to the corresponding relationship between the condition parameter and the target object, the first baseband parameter and the second baseband parameter are respectively selected, and the first baseband parameter is the same or different from the second baseband parameter; rule four: after receiving other than the user terminal In the case of SA or data indicating the first service sent by other user terminals, the baseband parameters of the received SA are used as the first baseband parameters, and the baseband parameters of the received data are used as the second baseband parameters; Rule 5: In the case of receiving a synchronization signal indicating the first service sent by a user terminal other than the user terminal, the baseband parameter of the synchronization signal is used as the first baseband parameter and the second baseband parameter.

Among them, the target object is the network-side device configuration or the optional baseband parameter configuration agreed upon by the agreement. The baseband parameter configuration includes the fine configuration of time domain resources and the configuration of frequency domain resource subcarrier spacing, and the condition parameters include service delay requirements and data At least one of transmission rate requirements, reliability requirements, service quality QoS, and mobile speed of the user terminal.

In this embodiment, priority can be given to service delay requirements for rule 1, rule 2, and rule 3. Wherein, when the first baseband parameter or the second baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object, the selection method can be set according to actual needs, and no further limitation is made here. For example, low latency requirements correspond to the subtle configuration of short time domain resources, high data transmission rate requirements correspond to larger subcarrier spacing configurations, high reliability requirements, high service quality QoS requirements, and high mobile speeds of user terminals correspond to longer time domains. Subtle allocation of resources.

Step 202: After selecting the baseband parameters, determine the transmission carrier and/or partial bandwidth; in this embodiment, a carrier may include one or more partial bandwidths. Among them, after determining the baseband parameters, if the baseband parameters correspond to the carrier or part of the bandwidth one-to-one, the carrier and/or part of the bandwidth can be determined directly according to the selected baseband parameters; if the corresponding relationship between the baseband parameters and the carrier or part of the bandwidth If it is one-to-many, the carrier and/or partial bandwidth can be selected according to other corresponding parameters. Specifically, other corresponding parameters may include: the corresponding relationship between the bandwidth of the candidate part and the service attribute, the load of the bandwidth of the candidate part, and the result of eliminating resource occupation on the bandwidth of the candidate part.

Step 203: Select the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth; in this embodiment, the target time-frequency resource can be selected according to the selection process of the transmission resource on the LTE-V2X single carrier . Among them, the selection process of transmission resources on a LTE-V2X single carrier in the related technology includes the following three steps: the first step is to mark all candidate resources in the resource selection window as available; the second step is to exclude occupied resources, and Occupied resources include two types; specifically, in this step, in the sensing window, the UE itself transmits and cannot monitor service packets sent by other UEs on the sending subframe, and the above subframe becomes the skip subframe. It needs to be assumed that other UEs on this subframe have reserved the next resource in all cycles configured by the system, and the reserved resource overlaps with the candidate subframe, or with 1, 2,..., 10 after the candidate subframe. *counter-1 times to send sub-frames overlap, need to exclude the above candidate sub-frames The candidate subframe is the first type of occupied resources defined by LTE-V2X.

The SA sent by other UEs is monitored in the sensing window. According to the cycle and resource reservation information learned from the SA, if the reserved resource overlaps with the candidate resource, or is 1, 2,..., 10* after the candidate subframe The counter-1 transmission resources overlap, and according to the threshold that the PSSCH-RSRP measured by the SA is higher than, the corresponding candidate resources need to be excluded. The corresponding candidate resource is the second type of occupied resource defined by LTE-V2X.

Among them, if the remaining resource ratio is less than 20% after the second step is eliminated, the threshold is increased by 3dB and the elimination process is re-executed until the remaining resource ratio reaches or exceeds 20%.

The third step is to perform S-RSSI measurement and sorting on the candidate resources, select the 20% resource with the lowest S-RSSI measurement value, and the upper layer will select the resource from the above 20% candidate resources.

Based on the LTE-V2X transmission resource selection process on a single carrier in the related technology, in this embodiment, the process of selecting the target time-frequency resource includes the following four steps: determining the resource selection window on the carrier and/or part of the bandwidth The first candidate time-frequency resource within; the first candidate time-frequency resource is excluded from occupied resources to obtain the second candidate time-frequency resource; the second candidate time-frequency resource is measured by S-RSSI, and the S-RSSI is selected The first N second candidate time-frequency resources with the lowest measured value; select the target time-frequency resource for sending the first service from the N second candidate time-frequency resources; where N is a positive integer, and N is based on the first candidate time-frequency resource The preset ratio (for example, 20%) of the resource (the first candidate time-frequency resource is all the candidate resources in the resource selection window in the selection process of the transmission resource on the LTE-V2X single carrier in the related technology) is determined.

Specifically, the exclusion of occupied resources may be the same as or different from the exclusion of occupied resources in related technologies. In this embodiment, optionally, the above occupied resources may include the newly defined first occupied resources and the second occupied resources defined in LTE-V2X, and the second occupied resources include the above first occupied resources and the second type. Take up resources. Thus, in this embodiment, the above-mentioned exclusion of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource includes: excluding the first occupied resource from the first candidate time-frequency resource, and the second candidate time-frequency resource An occupied resource includes at least one of the first sub-time-frequency resource and the second sub-time-frequency resource; after the first occupied resource is excluded, the second occupied resource is excluded from the first candidate time-frequency resource, and the second Candidate time-frequency resource, the second occupied resource is an unavailable resource specified by LTE-V2X; wherein, the first sub-time-frequency resource includes all resources on the time domain resource where the first transmission resource is located, and the first transmission resource is the The user terminal has received other occupied and/or reserved resources indicated by SA or data indicating the first service of the same system; the second sub-time-frequency resource includes all resources on the time-domain resource where the second transmission resource is located, The second sending resource is a resource occupied and/or reserved by the user terminal for sending a second service, and the second service is a service other than the first service.

By excluding the above-mentioned first sub-time-frequency resource, the selected target time-frequency resource and the resources of the collaborative information interaction service of other user terminals may not overlap in the time domain. At the same time, the above-mentioned second sub-time-frequency resources are excluded, so that the selected target time-frequency resources can avoid conflicts in the time domain with the resources sent by the second service of the user terminal. In this way, it can effectively avoid For businesses that require collaborative information interaction, part of the business cannot be successfully received due to half-duplex effects, which affects the final decision.

In the embodiment of the present invention, before the user terminal starts sending the first service, baseband parameters are selected according to preset rules; the first service is a cooperative information interaction service; after the baseband parameters are selected, the transmission carrier and/or partial frequency are determined Wide; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth. In this way, in the NR system, the resource selection for collaborative information interaction service transmission can be realized, and at the same time, flexible baseband parameter configuration can be supported, which can meet the low latency requirements of the collaborative driving service.

Further, in this embodiment, since the first occupied resource has been excluded, when the second resource is excluded, in order to improve processing efficiency, the PSSCH-RSRP measurement is not performed on the first occupied resource.

After the above-mentioned target time-frequency resource is selected, the target time-frequency resource may conflict with the transmission resource of the second service of the user terminal in the time domain. For this reason, in this embodiment, in order to ensure the transmission of the first service , You can give up sending the second service. Specifically, after the above step 203, the method may further include: if the target time-frequency resource and the resource transmitted by the second service of the user terminal are in the time domain, then abandoning the transmission of the second service, the The second business is a business other than the first business.

In this way, the normal transmission of the first service on the target video resource ensures the reliability of the cooperative information interaction service transmission and avoids the influence of the second service transmission on the first service transmission.

Further, after the above step 203, it may further include: If the occupied and/or reserved transmission resources indicated by other received control signaling SA or data data indicating driving services of the same system and the resources transmitted by the second service of the user terminal overlap in the time domain, then The sending of the second service is abandoned, and the second service is a service other than the first service.

In this embodiment, when the second service transmission of the user terminal and the transmission resources of other user terminal transmission resources overlap in the time domain, the transmission of the second service of the user terminal is abandoned, which can avoid the cause Sending the second service results in the inability to receive the first service sent by other user terminals, thereby ensuring the reliability of the cooperative information interaction service reception, and avoiding the influence of the sending of the second service on the reception of the first service.

Optionally, in this embodiment, the SA of the first service may be used to indicate the transmission parameters of the first service; the transmission parameters include at least one of the following: SA transmission frequency band indication; SA transmission carrier indication; SA transmission part Bandwidth BWP indication; SA sending time-frequency resource indication; data sending frequency band indication; data sending carrier indication; data sending part of the bandwidth BWP indication; data sending time-frequency resource indication; coding and modulation indication; priority order indication.

Further, the above sending parameters further include: In the priority order field in the SA, the priority order of the first service is set to the highest priority order; or, a new indication field is added to the SA to indicate that the data indicated by the SA is the first service.

Optionally, the multiplexing mode of SA and data can be set according to actual needs. For example, in this embodiment, the multiplexing mode of SA and data in the first service is time division multiplexing TDM and/or frequency division multiplexing. Use FDM.

It should be noted that the various optional implementation manners introduced in the embodiment of the present invention can be implemented in combination with each other or can be implemented separately, which is not limited in the embodiment of the present invention.

Referring to FIG. 3, FIG. 3 is a structural diagram of a user terminal provided by an embodiment of the present invention. As shown in FIG. 3, the user terminal 300 includes: a baseband parameter selection module 301 for starting the first service on the user terminal Before transmission, baseband parameters are selected according to preset rules; the first service is a collaborative information interaction service; the determining module 302 is used to determine the transmission carrier and/or part of the bandwidth after the baseband parameters are selected; the resource selection module 303, It is used to select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth.

Optionally, the baseband parameters include the first baseband parameters of the control signaling SA and the second baseband parameters of the data data.

Optionally, the preset rule includes any one of the following: the first baseband parameter is selected according to the correspondence between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; according to the correspondence between the condition parameter and the target object The relationship selects the second baseband parameter, and the first baseband parameter is configured by the network side device or a fixed parameter value agreed upon by an agreement; The first baseband parameter and the second baseband parameter are respectively selected according to the corresponding relationship between the condition parameter and the target object. The first baseband parameter and the second baseband parameter are the same or different; after receiving the user terminal other than the user terminal In the case of the SA or data indicating the first service sent by the user terminal, the baseband parameters of the received SA are used as the first baseband parameters, and the baseband parameters of the received data are used as the second baseband parameters; In the case of a synchronization signal indicating the first service sent by a user terminal other than the user terminal, the baseband parameters of the synchronization signal are used as the first baseband parameter and the second baseband parameter; wherein, the target object is the network side The equipment configuration or the optional baseband parameter configuration agreed by the agreement. The baseband parameter configuration includes the fine configuration of time domain resources and the subcarrier spacing configuration of frequency domain resources. The condition parameters include service delay requirements, data transmission rate requirements, reliability requirements, At least one of QoS and the moving speed of the user terminal.

It should be noted that the above-mentioned user terminal 300 in this embodiment can be a user terminal of any implementation manner in the method embodiment of the present invention, and any implementation manner of the user terminal in the method embodiment of the present invention can be used by the present invention. The foregoing user terminal 300 in the embodiment realizes and achieves the same beneficial effects, which will not be repeated here.

Please refer to FIG. 4, which is a structural diagram of another user terminal provided by the implementation of the present invention. As shown in FIG. 4, the user terminal includes a transceiver 410, a memory 420, a processor 400, and a memory A computer program that can be run on the processor 400. The processor 400 is used to read the program in the memory 420 and execute the following process: before the user terminal starts sending the first service, follow Preset rules to select baseband parameters; The first service is a collaborative information exchange service; after selecting baseband parameters, determine the transmission carrier and/or part of the bandwidth; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth; or, The transceiver 410 is used to select baseband parameters according to preset rules before the user terminal starts sending the first service; the first service is a cooperative information interaction service; after the baseband parameters are selected, determine the transmission carrier and/or partial frequency Wide; select the target time-frequency resource for sending the first service on the carrier and/or part of the bandwidth.

In FIG. 4, the bus structure may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 400 and various circuits of the memory represented by the memory 420 are connected together. The bus bar architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are all known in the art, and therefore, no further description will be given here. The bus interface provides an interface. The transceiver 410 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.

The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 can store data used by the processor 400 when performing operations.

It should be noted that the memory 420 is not limited to only on the user terminal, and the memory 420 and the processor 400 may be separated in different geographical locations.

Optionally, the baseband parameters include the first baseband parameters of the control signaling SA and the second baseband parameters of the data data.

Optionally, the preset rule includes any one of the following: The first baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; the second baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object, and the first baseband parameter is determined by the network The roadside device configuration or the fixed parameter value agreed upon in the agreement; the first baseband parameter and the second baseband parameter are selected according to the corresponding relationship between the condition parameter and the target object, the first baseband parameter and the second baseband parameter are the same or different; In the case of SA or data indicating the first service sent by a user terminal other than the user terminal, the baseband parameters of the received SA are used as the first baseband parameters, and the baseband parameters of the received data As the second baseband parameter; in the case of receiving a synchronization signal indicating the first service sent by a user terminal other than the user terminal, the baseband parameter of the synchronization signal is used as the first baseband parameter and the second baseband parameter. Baseband parameters; where the target object is an optional baseband parameter configuration configured by the network side device or an agreement. The baseband parameter configuration includes time-domain resource subtle configuration and frequency-domain resource subcarrier spacing configuration, and the condition parameter includes service delay At least one of demand, data transmission rate demand, reliability demand, quality of service QoS, and mobile speed of the user terminal.

Optionally, the foregoing selecting the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth includes: determining the first candidate time-frequency resource in the resource selection window on the carrier and/or part of the bandwidth ; Exclude the occupied resources for the first candidate time-frequency resource to obtain the second candidate time-frequency resource; perform S-RSSI measurement on the second candidate time-frequency resource, and select the one with the lowest S-RSSI measurement value N second candidate time-frequency resources; select the target time-frequency resource for sending the first service from the N second candidate time-frequency resources; where N is a positive integer, and N is based on the preset ratio of the first candidate time-frequency resource determine.

Optionally, the aforementioned exclusion of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource includes: excluding the first occupied resource from the first candidate time-frequency resource, and the first occupied resource includes At least one of the first sub-time-frequency resource and the second sub-time-frequency resource; after the first occupied resource is excluded, the second occupied resource is excluded from the first candidate time-frequency resource to obtain the second candidate time-frequency resource , The second occupied resource is an unavailable resource specified by LTE-V2X; wherein, the first sub-time-frequency resource includes all resources on the time domain resource where the first transmission resource is located, and the first transmission resource is the user terminal Other received resources indicating the occupation and/or reserved resources indicated by SA or data indicating the first service of the same system; the second sub-time-frequency resource includes all resources on the time domain resource where the second transmission resource is located, and the second transmission The resource is a resource occupied and/or reserved by the user terminal for sending a second service, and the second service is a service other than the first service. Optionally, no PSSCH-RSRP measurement is performed on the first occupied resource.

Optionally, the processor 400 is further configured to read a program in the memory 420 and perform the following process: if the target time-frequency resource and the resource sent by the second service of the user terminal are in the time domain, then Abandon the sending of the second service, which is a service other than the first service; or, The transceiver 410 is further configured to abandon the transmission of the second service if the target time-frequency resource and the resource sent by the second service of the user terminal are in the upper range of the time domain, and the second service is in addition to the first service. Business other than business.

Optionally, the processor 400 is also used to read the program in the memory 420 and execute the following process: if other SA or data instructions indicating driving services of the same system have been received and/or reserved transmission resources If the resource sent by the second service of the user terminal overlaps in the time domain, the sending of the second service is abandoned. The second service is a service other than the first service; the transceiver 410 also uses If the occupancy and/or reserved transmission resources indicated by other SAs or data indicating driving services of the same system that have been received overlap with the resources transmitted by the second service of the user terminal in the time domain, then the second service is abandoned. Sending of the second service, where the second service is a service other than the first service.

Optionally, the SA of the first service is used to indicate the transmission parameters of the first service; the transmission parameters include at least one of the following: SA transmission frequency band indication; SA transmission carrier indication; SA transmission partial bandwidth BWP indication; SA transmission Time-frequency resource indication; data sending frequency band indication; data sending carrier indication; data sending partial bandwidth BWP indication; data sending time-frequency resource indication; Code modulation indication; priority order indication.

Optionally, the sending parameter further includes: setting the priority of the first service to the highest priority in the priority field in the SA; or, adding a new indication field in the SA to indicate what the SA indicates Data is the first business.

Optionally, the multiplexing mode of SA and data in the first service is time division multiplexing TDM and/or frequency division multiplexing FDM.

The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the resource selection method provided by the embodiment of the present invention are implemented.

In the several embodiments provided by the present invention, it should be understood that the disclosed method and device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or elements can be combined or integrated. To 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.

In addition, the functional units in each embodiment of the present invention may be integrated into one processing unit, or each unit may be included in a separate entity, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be realized in the form of hardware, or in the form of hardware plus software functional unit.

The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes a number of instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute part of the steps of the transceiver method described in each embodiment of the present invention. The aforementioned storage media include: U disk, removable hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc. The medium of the code.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

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Claims (16)

A resource selection method applied to a user terminal, wherein the resource selection method includes: selecting baseband parameters according to preset rules before the user terminal starts sending a first service; the first service is a collaborative information interaction service; After selecting the baseband parameters, determine the transmission carrier and/or part of the bandwidth; select the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth; wherein, the baseband parameters include the first of the control signaling SA Baseband parameters and second baseband parameters of data data; the preset rule includes any one of the following: the first baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; The second baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object. The first baseband parameter is configured by the network side equipment or a fixed parameter value agreed upon by agreement; the second baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object. A baseband parameter and the second baseband parameter, the first baseband parameter is the same or different from the second baseband parameter; after receiving the SA or indicating the first service sent by another user terminal except the user terminal In the case of data, the baseband parameters of the received SA are used as the first baseband parameters, and the baseband parameters of the received data are used as the second baseband parameters; when receiving user terminals other than the user terminal In the case of sending a synchronization signal indicating the first service, the baseband parameters of the synchronization signal are used as the first baseband parameter and the second baseband parameter; wherein, the target object is the optional configuration of the network side device or the agreement Baseband parameter configuration, the baseband parameter configuration includes time domain resource subtle configuration and frequency domain resource subcarrier spacing configuration, The condition parameters include at least one of service delay requirements, data transmission rate requirements, reliability requirements, service quality QoS, and movement speed of the user terminal. The resource selection method according to claim 1, wherein the foregoing selection of the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth includes: determining the resource selection on the carrier and/or part of the bandwidth The first candidate time-frequency resource in the window; the first candidate time-frequency resource is excluded from occupied resources to obtain the second candidate time-frequency resource; the second candidate time-frequency resource is the direct link received signal strength indicator S -RSSI measurement, select the first N second candidate time-frequency resources with the lowest S-RSSI measurement value; select the target time-frequency resource for transmitting the first service from the N second candidate time-frequency resources; where N is a positive integer , N is determined according to the preset ratio of the first candidate time-frequency resource. According to the resource selection method of claim 2, wherein the aforementioned exclusion of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource includes: excluding the first candidate time-frequency resource from the first candidate time-frequency resource. Occupied resources, the first occupied resources include at least one of a first sub-time-frequency resource and a second sub-time-frequency resource; after excluding the first occupied resource, the second occupied resource is excluded from the first candidate time-frequency resource Resource, the second candidate time-frequency resource is obtained, and the second occupied resource is an unavailable resource specified by LTE-V2X; wherein, the first sub-time-frequency resource includes all resources on the time domain resource where the first transmission resource is located, and The first transmission resource is the occupied and/or reserved resource indicated by other SA or data indicating the first service of the same system that the user terminal has received; the second sub-time-frequency resource includes the time domain where the second transmission resource is located All resources on the resource, the second sending resource is the end of the user The terminal sends resources occupied and/or reserved by a second service, where the second service is a service other than the first service. The resource selection method according to claim 3, wherein the reference signal received power PSSCH-RSRP measurement of the physical direct link shared channel is not performed on the first occupied resource. The resource selection method according to claim 1, wherein, after the foregoing selection of the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth, the method further includes: if the target time-frequency resource is related to the use If the resources sent by the second service of the user terminal are in the time domain, the sending of the second service is abandoned, and the second service is another service except the first service. The resource selection method according to claim 1, wherein, after the foregoing selection of the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth, the method further includes: if other instructions of the same type have been received If the occupied and/or reserved transmission resources indicated by the SA or data of the driving service overlap with the resources transmitted by the second service of the user terminal in the time domain, the transmission of the second service is abandoned, and the second service is Businesses other than the first business. The resource selection method according to claim 1, wherein the SA of the first service is used to indicate the transmission parameter of the first service; the transmission parameter includes at least one of the following: SA transmission frequency band indication; SA transmission carrier indication; SA Send part of the bandwidth BWP indication; SA send time-frequency resource indication; data send frequency band indication; Data transmission carrier indication; data transmission partial bandwidth BWP indication; data transmission time-frequency resource indication; coding and modulation indication; priority order indication. The resource selection method according to claim 7, wherein the sending parameter further includes: setting the priority of the first service as the highest priority in the priority field in the SA; or, adding a new priority in the SA The indication field is used to indicate that the data indicated by the SA is the first service. The resource selection method according to claim 1, wherein the multiplexing mode of SA and data in the first service is time division multiplexing TDM and/or frequency division multiplexing FDM. A user terminal includes a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor, wherein the processor is used to read the program in the memory and execute the following Process: Before the user terminal starts sending the first service, select baseband parameters according to preset rules; the first service is a collaborative information interaction service; after selecting the baseband parameters, determine the transmission carrier and/or part of the bandwidth; The target time-frequency resource for transmitting the first service is selected on the carrier and/or part of the bandwidth; or, the transceiver is used to select baseband parameters according to preset rules before the user terminal starts to transmit the first service; The business is collaborative information interaction business; After selecting the baseband parameters, determine the transmission carrier and/or part of the bandwidth; select the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth; the baseband parameters include the first baseband of the control signaling SA Parameter and the second baseband parameter of the data data; the preset rule includes any one of the following: the first baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object, and the first baseband parameter is the same as the second baseband parameter; The corresponding relationship between the condition parameter and the target object selects the second baseband parameter. The first baseband parameter is configured by the network side equipment or a fixed parameter value agreed upon by agreement; the first baseband parameter is selected according to the corresponding relationship between the condition parameter and the target object. Baseband parameters and the second baseband parameters, the first baseband parameters are the same as or different from the second baseband parameters; after receiving SA or data indicating the first service from other user terminals except the user terminal In the case of receiving the baseband parameters of the SA as the first baseband parameters, and the baseband parameters of the received data as the second baseband parameters; after receiving the transmission from other user terminals except the user terminal In the case of indicating the synchronization signal of the first service, the baseband parameter of the synchronization signal is used as the first baseband parameter and the second baseband parameter; wherein, the target object is the optional baseband configured by the network side device or agreed upon by agreement Parameter configuration. The baseband parameter configuration includes time-domain resource minute configuration and frequency-domain resource subcarrier spacing configuration. The conditional parameters include service delay requirements, data transmission rate requirements, reliability requirements, service quality QoS, and user terminal mobility At least one of speed. The user terminal according to claim 10, wherein the foregoing selection of the target time-frequency resource for transmitting the first service on the carrier and/or part of the bandwidth includes: determining the resource selection on the carrier and/or part of the bandwidth The first candidate time-frequency resource in the window; Exclude the occupied resources for the first candidate time-frequency resource to obtain the second candidate time-frequency resource; perform the direct link received signal strength indicator S-RSSI measurement on the second candidate time-frequency resource, and select the S-RSSI measurement value The lowest first N second candidate time-frequency resources; select the target time-frequency resource for sending the first service from the N second candidate time-frequency resources; where N is a positive integer, and N is based on the first candidate time-frequency resource The preset ratio is determined. The user terminal according to claim 11, wherein the aforementioned removal of occupied resources on the first candidate time-frequency resource to obtain the second candidate time-frequency resource includes: excluding the first candidate time-frequency resource from the first candidate time-frequency resource. Occupied resources, the first occupied resources include at least one of a first sub-time-frequency resource and a second sub-time-frequency resource; after excluding the first occupied resource, the second occupied resource is excluded from the first candidate time-frequency resource Resource, the second candidate time-frequency resource is obtained, and the second occupied resource is an unavailable resource specified by LTE-V2X; wherein, the first sub-time-frequency resource includes all resources on the time domain resource where the first transmission resource is located, and The first transmission resource is the occupied and/or reserved resource indicated by other SA or data indicating the first service of the same system that the user terminal has received; the second sub-time-frequency resource includes the time domain where the second transmission resource is located For all resources on the resource, the second sending resource is a resource occupied and/or reserved for the user terminal to send a second service, and the second service is another service except the first service. The user terminal according to claim 12, wherein the reference signal received power PSSCH-RSRP measurement of the physical direct link shared channel is not performed on the first occupied resource. The user terminal according to claim 10, wherein the processor is also used to read the program in the memory and execute the following process: If the target time-frequency resource and the resource sent by the second service of the user terminal are in the upper part of the time domain, the sending of the second service is abandoned, and the second service is a service other than the first service; Alternatively, the transceiver is further configured to abandon the transmission of the second service if the target time-frequency resource and the resource sent by the second service of the user terminal are in the upper range of the time domain, and the second service is in addition to the first service. Businesses other than one business. The user terminal according to claim 10, wherein the processor is also used to read the program in the memory and execute the following process: if other SA or data instructions indicating similar system driving services have been received And/or the reserved transmission resources overlap with the resources transmitted by the second service of the user terminal in the time domain, then the transmission of the second service is abandoned, and the second service is other than the first service Service; the transceiver is also used if the occupied and/or reserved transmission resources indicated by other SA or data indicating driving services of the same system and the resources transmitted by the second service of the user terminal are in the time domain If they overlap, the sending of the second service is abandoned, and the second service is a service other than the first service. The user terminal according to claim 10, wherein the SA of the first service is used to indicate the transmission parameter of the first service; the transmission parameter includes at least one of the following: SA transmission frequency band indication; SA transmission carrier indication; SA Send part of the bandwidth BWP indication; SA send time-frequency resource indication; data send frequency band indication; Data transmission carrier indication; data transmission partial bandwidth BWP indication; data transmission time-frequency resource indication; coding and modulation indication; priority order indication.

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