CN117769023A

CN117769023A - Carrier selection method, device and readable storage medium

Info

Publication number: CN117769023A
Application number: CN202211131869.0A
Authority: CN
Inventors: 郑倩; 肖潇
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2024-03-26

Abstract

The application discloses a carrier selection method, carrier selection equipment and a readable storage medium, which belong to the technical field of communication, and the method comprises the following steps: the terminal determines a target carrier in one or more first carriers according to preset conditions, wherein the target carrier is used for SL; wherein the first carrier is a carrier associated with a first logical channel where data arrives, and the preset condition is associated with one or more of the following: a channel busy rate CBR value of the first carrier; the HARQ feedback attribute of the first logic channel; whether the configuration of the first carrier comprises a PSFCH configuration; the Destination L2ID type of the first logical channel; and the configuration of the first carrier comprises a transmission resource pool configuration.

Description

Carrier selection method, device and readable storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a carrier selection method, carrier selection equipment and a readable storage medium.

Background

The 5G NR SL determines the transmission mode that will support subcarrier aggregation (sidelink Carrier Aggregation, SL CA), and the carrier selection or reselection method in the related art cannot be applied due to the introduction of NR SL.

Disclosure of Invention

The embodiment of the application provides a carrier selection method, carrier selection equipment and a readable storage medium, which can solve the problem of how to execute carrier selection or reselection in an NR SL scene.

In a first aspect, a carrier selection method is provided, including:

the terminal determines a target carrier in one or more first carriers according to preset conditions, wherein the target carrier is used for a sub-link SL;

wherein the first carrier is a carrier associated with a first logical channel where data arrives, and the preset condition is associated with one or more of the following:

a CBR value of the first carrier;

the HARQ feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a PSFCH configuration;

the Destination L2 ID type of the first logical channel;

and the configuration of the first carrier comprises a transmission resource pool configuration.

In a second aspect, there is provided a carrier selection apparatus, which is applied to a terminal, including:

the first determining module is used for determining a target carrier in one or more first carriers according to preset conditions by the terminal, wherein the target carrier is used for a sub-link SL;

A CBR value of the first carrier;

the HARQ feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a PSFCH configuration;

the Destination L2 ID type of the first logical channel;

In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine a target carrier from one or more first carriers according to a preset condition, where the target carrier is used for a sub-link SL;

a CBR value of the first carrier;

the HARQ feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a PSFCH configuration;

the Destination L2 ID type of the first logical channel;

In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor realizes the steps of the method according to the first aspect.

In a sixth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first aspect.

In a seventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect.

In the embodiment of the application, the terminal determines the target carrier from one or more first carriers according to the preset condition associated with the NR SL characteristics, where the first carrier is a carrier associated with a first logical channel where data arrives, and by considering the influence of the NR SL new characteristics on carrier selection or reselection, it is possible to avoid that an unsuitable NR SL carrier is selected to affect service transmission, so that the method and the device are effectively applicable to the NR SL system.

Drawings

Fig. 1a is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 1b is a SL communication architecture;

FIG. 1c is a SL discovery model A flow;

FIG. 1d is a SL discovery model B flow;

fig. 2 is a schematic flow chart of a carrier selection method provided in an embodiment of the present application;

fig. 3 is a schematic flow chart of a carrier selection apparatus provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal provided in an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/evolution of LTE (LTE-Advanced, LTE-A) The system may also be used in other wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (SC-carrier Frequency Division Multiple Access), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network device 12 may comprise an access network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited.

For a better understanding of the technical solutions of the present application, the following description is first provided:

1. sidelink introduction

A long term evolution (Long Term Evolution, LTE) system supports sidelink (or sidelink, or the like) for direct data transmission between end User Equipments (UEs) without through network Equipment. Fig. 1b shows a sidelink network architecture.

The design of the LTE sidelink is suitable for specific public safety matters (such as emergency communication in disaster places like fire places or earthquakes), or Internet of vehicles (vehicle to everything, V2X) communication and the like. The internet of vehicles communication includes various services such as basic security type communication, advanced (automatic) driving, formation, sensor expansion, and the like. Since LTE sidelink only supports broadcast communications, it is mainly used for basic security class communications, and other advanced V2X services with strict quality of service (Quality of Service, qoS) requirements in terms of latency, reliability, etc. will be supported by NR sidelink.

The 5G NR system may also support a sidelink interface for direct communication between terminals, and SL communication (SL communication) includes three transmission modes:

(1) SL broadcast communications (SL broadcast communication);

(2) SL multicast communication (SL groupcast communication);

(3) SL unicast communication (SL unicast communication).

Unicast, as the name implies, is the transmission of one to one. Multicast is a transmission of one to the management, and broadcast is also a transmission of one to the management, but broadcast does not have the concept that UEs belong to the same group. Currently, the sidelink unicast and multicast communication support a physical layer hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) feedback mechanism, i.e., a HARQ feedback mechanism.

2. Resource allocation patterns mode 1 and mode 2

The resource allocation patterns of the sidelink UE are classified into two types in total:

1) Base station scheduling Mode (Mode 1): BS schedules SL resource(s) to be used by UE for SL transmission(s). I.e. controlled by the network side equipment (base station) and allocating resources for each UE.

2) UE autonomous Mode (Mode 2) UE determinations, i.e. bs does not schedule, SL transmission resource(s) within SL resources configured by BS/network or pre-configured SL resources, i.e. resources are selected autonomously by each UE.

3. Sidelink Discovery flow

Unlike SL communication, a new class of service, SL discovery (SL discovery), has been introduced.

The SL discover flow supports two modes: model A and model B

FIG. 1c shows a flow of a model A:

annunciation UE (Announcing UE): the UE announces certain information that may be used by a neighboring UE with discovery rights.

Monitoring UE (Monitoring UE) -UEs monitoring certain information of interest in the vicinity of the advertising UE.

FIG. 1d shows a flow of a model B:

UE (Discoverer UE) were found: the UE sends a request containing some information about its discovery of interest.

The UE that is discovered UE (Discovered UE) that receives the request message may respond with some information related to the discoverer's request.

4. SL CA and carrier selection/reselection

In LTE SL, the transmission scheme of SL CA is supported, and the basic carrier selection or reselection procedure is as follows.

For a specific V2X service, an upper layer (upper layers) of the UE provides a mapping relation (mapping between V2X service types and V2 xfrequency) between a service type and a carrier frequency point to an access layer (Access Stratum layer, AS layer) of the UE, and when SL air interface transmission is performed, the access layer of the UE needs to ensure that the corresponding service is sent on the corresponding carrier frequency point.

Where the upper layers may be referred to as upper layers, generally, protocol layers above the access layer are collectively referred to as upper layers. Depending on the traffic involved, the upper layers may be a NAS layer (Non-Access Stratum layer), a V2X layer (Vehicle to everything layer), a ProSe layer (Proximity Service layer), an application layer (App layer), etc.

If the UE works in the base station scheduling Mode (Mode 1), the base station allocates SL resources according to the SL BSR report of the UE and the information reported by the Sidelink UE Information message so as to ensure that the corresponding service is sent on the corresponding carrier frequency point.

If the UE is operating in the UE autonomous Mode (Mode 2), the access layer of the UE will perform a carrier selection or reselection procedure if a trigger carrier selection or reselection condition is met, and the selected carrier performs carrier selection or reselection based only on CBR-single packet priority (prose per packet priority, PPPP) mapping.

The transmission scheme that will support SL CA is also determined for 5G NR SL, but standardization has not yet begun. But the effect of the newly introduced characteristics of the NR SL (e.g. SL HARQ feedback attribute, SL communication/discovery traffic type) on the carrier selection has not been taken into account. Therefore, the NR SL carrier selection or reselection method needs to consider the new NR SL characteristics to study the scheme applicable to the NR SL system.

The carrier selection method provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings by some embodiments and application scenarios thereof.

Referring to fig. 2, an embodiment of the present application provides a carrier selection method, where an execution body of the method is a terminal, and the method includes:

Step 201: the terminal determines a target carrier from one or more first carriers according to preset conditions;

the target carrier is used for SL; the target carrier may also be referred to as a selected carrier(s).

The first carrier is a carrier associated with a first logic channel where data arrives, and the preset condition is associated with one or more of the following:

(1) CBR value of the first carrier;

(2) A hybrid automatic repeat request feedback (Hybrid Automatic Repeat request feedback, HARQ feedback) attribute of the first logical channel;

(3) Whether the configuration of the first carrier comprises a physical sidelink feedback channel (Physical SideLink Feedback Channel, PSFCH) configuration;

(4) A target layer 2 identification (Destination L2 ID) type of the first logical channel;

(5) The configuration of the first carrier includes a configuration of a pool of transmission resources.

In the embodiment of the application, the terminal determines the target carrier from one or more first carriers according to the preset condition associated with the NR SL characteristics, where the first carrier is a carrier associated with a first logical channel having data arriving, so that the influence of the NR SL new characteristics on carrier selection or reselection is considered, and the influence of selecting an unsuitable NR SL carrier on service transmission is avoided, so that the method is more suitable for an NR SL system.

In a possible implementation manner, the determining, by the terminal, the target carrier among the one or more first carriers according to the preset condition includes:

the terminal determines a first carrier wave meeting a first condition as a target carrier wave;

wherein the first condition is related to the HARQ feedback attribute and/or the Destination L2 ID type of the first logical channel.

In one possible implementation manner, the determining, by the terminal, the first carrier satisfying the first condition as the target carrier includes:

the terminal determines a first carrier meeting a first condition and meeting a CBR value less than a first CBR threshold as a target carrier.

It should be noted that the above embodiment includes two specific modes: (1) The terminal determines a first carrier meeting a first condition as a target carrier (2) the terminal determines a CBR value of the first carrier to be smaller than a first CBR threshold value, and the first carrier meeting the first condition as the target carrier.

It should be noted that, the determining manner of the first CBR threshold may refer to a determining manner of a CBR threshold in LTE SL, or may be configured by a network side or a terminal in advance, or a mapping relationship between CBR and SL logical channel priority or QoS parameter configuration (QoS Profile) is pre-agreed by a protocol.

In a possible implementation manner, in a case that the first condition relates to a HARQ feedback attribute of the first logical channel, the first condition includes any one of the following:

(1) The HARQ feedback attribute of the first logic channel is an enable, and the configuration of the first carrier comprises PSFCH configuration;

(2) The HARQ feedback attribute of the first logic channel is disable, and the configuration of the first carrier wave does not contain PSFCH configuration;

(3) The HARQ feedback attribute of the first logic channel is disable, and the configuration of the first carrier wave comprises PSFCH configuration;

in the case that the first condition is related to the Destination L2 ID type of the first logical channel, the first condition includes any one of:

(4) The Destination L2 ID type of the first logical channel is a type for SL communication, and the configuration of the first carrier includes a transmission shared resource pool configuration of SL communication and SL discovery;

(5) The Destination L2 ID type of the first logical channel is a type for SL discovery, and the configuration of the first carrier includes at least one of: configuring a special resource pool for SL discovery; the transmission of SL communication and SL discovery shares the resource pool configuration.

In this way, the first condition is set according to the new characteristic of the NR SL, and the carrier selection or reselection is performed based on the first condition, so that the selected carrier is more suitable for the NR SL scene.

the terminal excludes the first carrier wave meeting the second condition from the target carrier wave;

wherein the second condition is related to the HARQ feedback attribute and/or the Destination L2 ID type of the first logical channel.

In one possible implementation manner, the terminal excludes the first carrier satisfying the second condition from the target carriers, including:

the terminal excludes the first carrier, which satisfies the second condition and has a CBR value greater than or equal to the second CBR threshold, from the target carrier.

It should be noted that the above embodiment includes two specific modes: (1) The terminal excludes the first carrier satisfying the second condition from the target carrier (2) the terminal excludes the first carrier whose CBR value is greater than or equal to the second CBR threshold value, and the first carrier satisfying the second condition from the target carrier.

It should be noted that, the determining manner of the second CBR threshold may refer to a determining manner of a CBR threshold in LTE SL, or may be configured by a network side or a terminal in advance, or a mapping relationship between CBR and SL logical channel priority or QoS parameter configuration (QoS Profile) is pre-agreed by a protocol.

In a possible implementation manner, in a case that the second condition relates to a HARQ feedback attribute of the first logical channel, the second condition includes:

(1) The HARQ feedback attribute of the first logic channel is enable, and the configuration of the first carrier wave does not contain PSFCH configuration;

in the case that the second condition is related to the Destination L2 ID type of the first logical channel, the second condition includes:

(2) The Destination L2 ID type of the first logical channel is a type for SL discovery, and the configuration of the first carrier does not include: a transmission dedicated resource pool configuration for SL discovery, and a transmission shared resource pool configuration for SL communication and SL discovery.

In this way, the second condition is set according to the new characteristic of the NR SL, and the unsuitable carrier is removed based on the second condition to determine the target carrier, so that the selected carrier is more suitable for the NR SL scene.

In one possible implementation manner, before the terminal determines the target carrier in the one or more first carriers according to the preset condition, the method further includes:

the terminal determines the first carrier wave meeting the third condition as a candidate carrier wave;

wherein the third condition is related to the HARQ feedback attribute and/or the Destination L2 ID type of the first logical channel.

In one possible implementation manner, the determining, by the terminal, the first carrier satisfying the third condition as the candidate carrier includes:

the terminal determines the first carrier that satisfies the third condition and that has a CBR value less than the third CBR threshold as a candidate carrier.

It should be noted that the above embodiment includes two specific modes: (1) The terminal determines the first carrier satisfying the third condition as a candidate carrier (2) the terminal determines the CBR value of the first carrier to be less than a third CBR threshold and the first carrier satisfying the third condition as a candidate carrier.

It should be noted that, the determining manner of the third CBR threshold may refer to the determining manner of the CBR threshold in the LTE SL, or may be configured by a network side or a terminal in advance, or may be a mapping relationship between CBR and SL logical channel priority or QoS parameter configuration (QoS Profile) which is pre-agreed by a protocol.

In a possible implementation manner, in a case that the third condition relates to a HARQ feedback attribute of the first logical channel, the third condition includes any one of the following:

(1) The HARQ feedback attribute of the first logic channel is enable, and the configuration of the first carrier wave comprises PSFCH configuration;

in the case that the third condition is related to the Destination L2 ID type of the first logical channel, the third condition includes any one of:

In this way, the first condition is set according to the new characteristic of the NR SL, and carrier selection or reselection is performed based on the third condition, so that the selected carrier is more suitable for the NR SL scene.

In one possible implementation manner, before the terminal determines the selected carrier from the one or more first carriers according to the preset condition, the method further includes:

The terminal excludes the first carrier wave meeting the fourth condition from the candidate carrier waves;

wherein the fourth condition is related to the HARQ feedback attribute and/or the Destination L2 ID type of the first logical channel.

In one possible implementation manner, the terminal excludes the first carrier satisfying the fourth condition from the candidate carriers, including:

the terminal excludes the first carrier, which satisfies the fourth condition and has a CBR value greater than or equal to the fourth CBR threshold, from the target carrier.

It should be noted that the above embodiment includes two specific modes: (1) The terminal excludes the first carrier satisfying the fourth condition from the target carrier (2) the terminal excludes the first carrier whose CBR value is greater than or equal to the fourth CBR threshold value, and the first carrier satisfying the fourth condition from the target carrier.

It should be noted that, the determination method of the fourth CBR threshold may refer to the determination method of the CBR threshold in LTE SL, or may be configured by a network side or a terminal in advance, or may be a mapping relationship between CBR and SL logical channel priority or QoS parameter configuration (QoS Profile) which is pre-agreed by a protocol.

In a possible implementation manner, in a case that the fourth condition relates to a HARQ feedback attribute of the first logical channel, the fourth condition includes:

the HARQ feedback attribute of the first logic channel is enable, and the configuration of the first carrier wave does not contain PSFCH configuration;

in the case that the fourth condition is related to the Destination L2 ID type of the first logical channel, the fourth condition includes:

the Destination L2 ID type of the first logical channel is a type for SL discovery, and the configuration of the first carrier does not include a transmission dedicated resource pool configuration of SL discovery, and transmission shared resource pool configurations of SL communication and SL discovery.

Thus, a fourth condition is set according to the new characteristic of the NR SL, and unsuitable carriers are removed based on the fourth condition to determine a target carrier, so that the selected carrier is more suitable for an NR SL scene.

In addition to the above-described method of determining the candidate carrier based on the third condition or the fourth condition, the terminal may also use the existing method of determining the candidate carrier, because the condition set in the above-described stage of determining the target carrier is associated with the new NR SL characteristic, and it is ensured that the selected target carrier is suitable for the NR SL scenario to some extent. Of course, the judgment conditions associated with the new characteristics of the NR SL are adopted at the stage of determining the candidate carrier and the target carrier, so that the selected target carrier can be further ensured to be suitable for the NR SL scenario.

In one possible embodiment, the method further comprises:

in the case that the fifth condition is satisfied, the terminal determines to perform carrier selection or carrier reselection;

wherein the fifth condition comprises at least one of:

(1) In one or more first logical channels, there is a mismatch between the HARQ feedback attribute of at least one first logical channel and the configuration of at least one first carrier associated with the first logical channel;

(2) Among the one or more first logical channels, the HARQ feedback attribute of the first logical channel with the highest logical channel priority is not matched with the configuration of at least one first carrier associated with the first logical channel;

(3) In one or more first logical channels, there is a mismatch of the Destination L2 ID type of at least one first logical channel and the configuration of at least one first carrier associated with the first logical channel;

(4) Among the one or more first logical channels, the Destination L2 ID type of the first logical channel with the highest logical channel priority does not match the configuration of at least one first carrier associated with the first logical channel.

In this way, the fifth condition is set according to the new characteristic of the NR SL, and it is decided whether to perform carrier selection or carrier reselection based on the fifth condition, so that the subsequently selected carrier is more suitable for the NR SL scenario.

In addition to the above-described decision of whether to perform carrier selection or carrier reselection based on the fifth condition, the terminal may also use a conventional manner of deciding whether to perform carrier selection or carrier reselection, because the condition set in the above-described stage of determining the target carrier is associated with the new characteristic of the NR SL, and it can be ensured to some extent that the selected target carrier is suitable for the NR SL scenario. Of course, the decision condition associated with the new NR SL characteristic is used in the stage of deciding whether to perform carrier selection or carrier reselection and determining the target carrier, so that it can be further ensured that the selected target carrier is suitable for the NR SL scenario.

In one possible implementation, the HARQ feedback attribute of the first logical channel does not match the configuration of the at least one first carrier associated with the first logical channel, including:

the HARQ feedback attribute of the first logic channel is enabled, and the configuration of any carrier in at least one first carrier does not contain PSFCH configuration;

in one possible implementation, the mismatch of the Destination L2 ID type of the first logical channel and the configuration of the at least one first carrier associated with the first logical channel comprises:

The Destination L2 ID type of the first logical channel is a type for SL discovery, and any carrier configuration of the at least one first carrier does not include: a transmission dedicated resource pool configuration for SL discovery, and a transmission shared resource pool configuration for SL communication and SL discovery.

In one possible implementation, the determining by the terminal to perform carrier selection or carrier reselection includes:

the terminal determines that carrier selection or carrier reselection is carried out on a first logic channel, of which the HARQ feedback attribute or the Destination L2 ID type is not matched with the configuration of the first carrier, in one or more first logic channels; that is, once it is determined to perform the carrier selection or reselection procedure, the carrier selection or reselection procedure is performed only on the logical channels determined to be not matched;

or, the terminal determines to perform carrier selection or carrier reselection, including:

the terminal determines to execute carrier selection or carrier reselection on all first logic channels; i.e. once it is determined to perform a carrier selection or reselection procedure, a carrier selection or retransmission procedure is performed on the first logical channel where all the data arrives.

In one possible implementation, the at least one first carrier associated with the first logical channel includes any one of the following:

(1) At least one allowed carrier(s);

(2) At least one candidate carrier candidate carrier(s);

(3) At least one selected carrier(s).

the upper layer of the terminal indicates a first mapping relation to the access layer of the terminal;

the first mapping relation is a mapping relation between a service type and a carrier frequency point, and the first mapping relation satisfies one or more of the following:

(1) The configuration of at least one carrier in carriers corresponding to all carrier frequency points in the first mapping relation comprises PSFCH configuration;

(2) The configuration of at least one carrier among carriers corresponding to all carrier frequency points in the first mapping relation comprises at least one of the following: configuring a special resource pool for SL discovery; the transmission of SL communication and SL discovery shares the resource pool configuration.

For a particular SL service (e.g., SL communication, SL discovery), a mapping relationship (mapping between service types and frequencies) between the service type and the carrier frequency point is provided by an upper layer of the UE to an access layer of the UE, the upper layer ensuring that at least one of:

(1) At least one carrier in all carrier frequency points in the mapping relation comprises PSFCH configuration;

(2) At least one carrier in all carrier frequency points in the mapping relation comprises SL discovery transmission resource pool configuration;

therefore, when the SL air interface is transmitted, the situation that the allowed carrier frequency points are zero is avoided, and if the allowed carrier frequency points are zero, the AS layer cannot be solved by triggering a carrier selection or reselection flow, and the AS layer cannot be blocked.

According to the carrier selection method provided by the embodiment of the application, the execution body can be a carrier selection device. In the embodiment of the present application, a carrier selection device executes a carrier selection method by using a carrier selection device as an example, and the carrier selection device provided in the embodiment of the present application is described.

Referring to fig. 3, an embodiment of the present application provides a carrier selection apparatus 300, which is applied to a terminal, including:

a first determining module 301, configured to determine a target carrier from one or more first carriers according to a preset condition, where the target carrier is used for a sub-link SL;

a CBR value of the first carrier;

the HARQ feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a PSFCH configuration;

the Destination L2 ID type of the first logical channel;

Optionally, the first determining module is specifically configured to:

the terminal determines a first carrier wave meeting a first condition as the target carrier wave;

wherein the first condition is related to an HARQ feedback attribute and/or a Destination L2 ID type of the first logical channel.

Optionally, the first determining module is specifically configured to:

the terminal determines a first carrier satisfying the first condition and satisfying a CBR value less than a first CBR threshold as the target carrier.

Optionally, in a case that the first condition relates to a HARQ feedback attribute of the first logical channel, the first condition includes any one of the following:

the HARQ feedback attribute of the first logical channel is enable, and the configuration of the first carrier wave comprises PSFCH configuration;

The HARQ feedback attribute of the first logical channel is disable, and the configuration of the first carrier wave does not contain PSFCH configuration;

the HARQ feedback attribute of the first logical channel is disable, and the configuration of the first carrier wave comprises PSFCH configuration;

the Destination L2 ID type of the first logical channel is a type for SL communication, and the configuration of the first carrier includes a transmission shared resource pool configuration of SL communication and SL discovery;

the Destination L2 ID type of the first logical channel is a type for SL discovery, and the configuration of the first carrier includes at least one of: configuring a special resource pool for SL discovery; the transmission of SL communication and SL discovery shares the resource pool configuration.

Optionally, the first determining module is specifically configured to:

wherein the second condition is related to an HARQ feedback attribute and/or a Destination L2 ID type of the first logical channel.

Optionally, the first determining module is specifically configured to:

the terminal excludes the first carrier, which satisfies the second condition and has a CBR value greater than or equal to a second CBR threshold, from the target carrier.

Optionally, in a case that the second condition relates to a HARQ feedback attribute of the first logical channel, the second condition includes:

the HARQ feedback attribute of the first logical channel is enable, and the configuration of the first carrier wave does not contain PSFCH configuration;

the Destination L2 ID type of the first logical channel is a type for SL discovery, and the configuration of the first carrier does not include: a transmission dedicated resource pool configuration for SL discovery, and a transmission shared resource pool configuration for SL communication and SL discovery.

Optionally, the apparatus further comprises:

the second determining module is used for determining the first carrier wave meeting the third condition as a candidate carrier wave before the terminal determines the target carrier wave in one or more first carrier waves according to the preset condition;

Wherein the third condition is related to an HARQ feedback attribute and/or a Destination L2 ID type of the first logical channel.

Optionally, the second determining module is specifically configured to:

the terminal determines a first carrier that satisfies the third condition and has a CBR value less than a third CBR threshold as the candidate carrier.

Optionally, in a case that the third condition relates to a HARQ feedback attribute of the first logical channel, the third condition includes any one of the following:

Optionally, the apparatus further comprises:

a third determining module, configured to exclude, before the terminal determines the target carrier from the one or more first carriers according to the preset condition, the first carrier that satisfies the fourth condition from the candidate carriers;

wherein the fourth condition is related to an HARQ feedback attribute and/or a Destination L2 ID type of the first logical channel.

Optionally, the third determining module is specifically configured to:

the terminal excludes the first carrier that satisfies the fourth condition and that has a CBR value greater than or equal to a fourth CBR threshold from the target carrier.

Optionally, in a case that the fourth condition relates to a HARQ feedback attribute of the first logical channel, the fourth condition includes:

Optionally, the apparatus further comprises:

a fourth determining module, configured to determine to perform carrier selection or carrier reselection when the fifth condition is satisfied;

wherein the fifth condition includes at least one of:

in one or more first logical channels, there is a mismatch between the HARQ feedback attribute of at least one first logical channel and the configuration of at least one first carrier associated with the first logical channel;

among the one or more first logical channels, the HARQ feedback attribute of the first logical channel with the highest logical channel priority is not matched with the configuration of at least one first carrier associated with the first logical channel;

in one or more of the first logical channels, there is a mismatch of the Destination L2 ID type of at least one first logical channel and the configuration of at least one first carrier associated with the first logical channel;

Among the one or more first logical channels, the Destination L2 ID type of the first logical channel with the highest logical channel priority does not match the configuration of at least one first carrier associated with the first logical channel.

Optionally, the HARQ feedback attribute of the first logical channel does not match the configuration of at least one first carrier associated with the first logical channel, including:

the HARQ feedback attribute of the first logical channel is enable, and the configuration of any carrier in the at least one first carrier does not contain PSFCH configuration;

the mismatch of the Destination L2 ID type of the first logical channel and the configuration of at least one first carrier associated with the first logical channel comprises the following steps:

Optionally, the fourth determining module is specifically configured to:

the terminal determines to execute carrier selection or carrier reselection on a first logic channel of which the HARQ feedback attribute or the Destination L2 ID type is not matched with the configuration of a first carrier in one or more first logic channels;

Or,

the terminal determines to perform carrier selection or carrier reselection on all of the first logical channels.

Optionally, the at least one first carrier associated with the first logical channel includes any one of the following:

at least one carrier that allows use;

at least one candidate carrier;

at least one selected carrier.

Optionally, the apparatus further comprises:

the terminal comprises an indication module, a first mapping relation and a second mapping relation, wherein the indication module is used for indicating the first mapping relation to an access layer of the terminal by an upper layer of the terminal before the terminal determines a selected carrier in one or a plurality of first carriers according to preset conditions;

the first mapping relationship is a mapping relationship between a service type and a carrier frequency point, and the first mapping relationship satisfies one or more of the following:

the configuration of at least one carrier in carriers corresponding to all carrier frequency points in the first mapping relation comprises PSFCH configuration;

the configuration of at least one carrier among carriers corresponding to all carrier frequency points in the first mapping relation comprises at least one of the following: configuring a special resource pool for SL discovery; the transmission of SL communication and SL discovery shares the resource pool configuration.

The carrier selection apparatus in the embodiments of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The carrier selection device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

Optionally, as shown in fig. 4, the embodiment of the present application further provides a communication device 400, including a processor 401 and a memory 402, where the memory 402 stores a program or instructions that can be executed on the processor 401, for example, when the communication device 400 is a terminal, the program or instructions implement the steps of the carrier selection method embodiment described above when executed by the processor 401, and achieve the same technical effects. When the communication device 400 is a network device, the program or the instructions implement the steps of the above-mentioned carrier selection method embodiment when executed by the processor 401, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for determining a target carrier in one or more first carriers according to preset conditions, and the target carrier is used for a sub-link SL; wherein the first carrier is a carrier associated with a first logical channel where data arrives, and the preset condition is associated with one or more of the following: a CBR value of the first carrier; the HARQ feedback attribute of the first logic channel; whether the configuration of the first carrier comprises a PSFCH configuration; the Destination L2 ID type of the first logical channel; and the configuration of the first carrier comprises a transmission resource pool configuration. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 5 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 500 includes, but is not limited to: at least some of the components of the radio frequency unit 501, the network module 502, the audio output unit 503, the input unit 504, the sensor 505, the display unit 506, the user input unit 507, the interface unit 508, the memory 509, and the processor 510.

Those skilled in the art will appreciate that the terminal 500 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 5 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 504 may include a graphics processing unit (Graphics Processing Unit, GPU) 5041 and a microphone 5042, with the graphics processor 5041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 507 includes at least one of a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen. Touch panel 5071 may include two parts, a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network device, the radio frequency unit 501 may transmit the downlink data to the processor x10 for processing; in addition, the radio frequency unit 501 may send uplink data to the network device. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 509 may be used to store software programs or instructions as well as various data. The memory 509 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 509 may include volatile memory or nonvolatile memory, or the memory 509 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory x09 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 510.

A processor 510, configured to determine a target carrier from one or more first carriers according to a preset condition, where the target carrier is used for a sub-link SL;

a CBR value of the first carrier;

the HARQ feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a PSFCH configuration;

the Destination L2 ID type of the first logical channel;

Optionally, the processor 510 is specifically configured to:

Optionally, the processor 510 is configured to determine, before the terminal determines the target carrier from the one or more first carriers according to the preset condition, the first carrier satisfying the third condition as the candidate carrier;

Optionally, the processor 510 is specifically configured to:

Optionally, the processor 510 is configured to exclude the first carrier that satisfies the fourth condition from the candidate carriers before the terminal determines the target carrier from the one or more first carriers according to the preset condition;

Optionally, the processor 510 is specifically configured to:

Optionally, the processor 510 is configured to determine to perform carrier selection or carrier reselection when the fifth condition is met;

wherein the fifth condition includes at least one of:

Optionally, the processor 510 is specifically configured to:

or,

at least one carrier that allows use;

at least one candidate carrier;

at least one selected carrier.

Optionally, the processor 510 is configured to, before the terminal determines the selected carrier from the one or more first carriers according to a preset condition, indicate the first mapping relationship to an access layer of the terminal by an upper layer of the terminal;

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the processes of the embodiment of the carrier selection method are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium may be non-volatile or non-transitory. The readable storage medium may include a computer readable storage medium such as a computer read only memory ROM, a random access memory RAM, a magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is configured to run a program or an instruction, implement each process of the above embodiment of the carrier selection method, and achieve the same technical effect, so as to avoid repetition, and no redundant description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the embodiments of the carrier selection method, and the same technical effects are achieved, so that repetition is avoided, and details are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A carrier selection method, comprising:

a channel busy rate CBR value of the first carrier;

the hybrid automatic repeat request (HARQ) feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a physical sidelink feedback channel, PSFCH, configuration;

the target layer 2 of the first logical channel identifies a Destination L2 ID type;

2. The method of claim 1, wherein the determining, by the terminal, the target carrier among the one or more first carriers according to the preset condition, includes:

3. The method of claim 2, wherein the terminal determining the first carrier satisfying the first condition as the target carrier comprises:

4. A method according to claim 2 or 3, characterized in that,

in the case that the first condition is related to the HARQ feedback attribute of the first logical channel, the first condition includes any one of the following:

the HARQ feedback attribute of the first logical channel is an enable, and the configuration of the first carrier comprises PSFCH configuration;

the Destination L2 ID type of the first logical channel is a type for the SL communication of the sidelink, and the configuration of the first carrier comprises a sending shared resource pool configuration of SL communication and the SL discovery of the sidelink;

5. The method of claim 1, wherein the determining, by the terminal, the target carrier among the one or more first carriers according to the preset condition, includes:

6. The method of claim 5, wherein the terminal excludes the first carrier satisfying the second condition from the target carriers, comprising:

7. The method according to claim 5 or 6, wherein,

in the case that the second condition is related to the HARQ feedback attribute of the first logical channel, the second condition includes:

8. The method of claim 1, wherein before the terminal determines the target carrier among the one or more first carriers according to the preset condition, the method further comprises:

9. The method of claim 8, wherein the terminal determining the first carrier satisfying the third condition as a candidate carrier comprises:

10. The method according to claim 8 or 9, wherein in case the third condition relates to a HARQ feedback attribute of the first logical channel, the third condition comprises any one of:

11. The method of claim 1, wherein before the terminal determines the selected carrier among the one or more first carriers according to the preset condition, the method further comprises:

12. The method of claim 11, wherein the terminal excludes the first carrier satisfying the fourth condition from the candidate carriers, comprising:

13. The method according to claim 11 or 12, wherein,

in the case that the fourth condition is related to the HARQ feedback attribute of the first logical channel, the fourth condition includes:

14. The method according to any one of claims 1 to 13, further comprising:

wherein the fifth condition includes at least one of:

15. The method of claim 14, wherein the step of providing the first information comprises,

the HARQ feedback attribute of the first logical channel does not match a configuration of at least one first carrier associated with the first logical channel, comprising:

16. The method of claim 14, wherein the terminal determining to perform carrier selection or carrier reselection comprises:

The terminal determines to execute carrier selection or carrier reselection on a first logic channel of which the HARQ feedback attribute or the Destination L2ID type is not matched with the configuration of a first carrier in one or more first logic channels;

or,

17. The method of claim 14, wherein the at least one first carrier associated with the first logical channel comprises any one of:

at least one carrier that allows use;

at least one candidate carrier;

at least one selected carrier.

18. The method of claim 1, wherein before the terminal determines the selected carrier among the one or more first carriers according to the preset condition, the method further comprises:

19. A carrier selection device, wherein the carrier selection device is applied to a terminal, and comprises:

a CBR value of the first carrier;

the HARQ feedback attribute of the first logic channel;

whether the configuration of the first carrier comprises a PSFCH configuration;

the Destination L2 ID type of the first logical channel;

20. The apparatus of claim 19, wherein the first determining module is specifically configured to:

21. The apparatus of claim 20, wherein the first determining module is specifically configured to:

22. The apparatus according to claim 20 or 21, wherein in case the first condition relates to a HARQ feedback attribute of the first logical channel, the first condition comprises any one of:

23. The apparatus of claim 19, wherein the first determining module is specifically configured to:

24. The apparatus of claim 23, wherein the first determining module is specifically configured to:

25. The apparatus according to claim 23 or 24, wherein in case the second condition relates to a HARQ feedback attribute of the first logical channel, the second condition comprises:

26. The apparatus of claim 19, wherein the apparatus further comprises:

27. The apparatus of claim 26, wherein the second determining module is specifically configured to:

28. The apparatus according to claim 26 or 27, wherein in case the third condition relates to a HARQ feedback attribute of the first logical channel, the third condition comprises any one of:

29. The apparatus of claim 19, wherein the apparatus further comprises:

30. The apparatus of claim 29, wherein the third determining module is specifically configured to:

31. The apparatus according to claim 29 or 30, wherein in case the fourth condition relates to a HARQ feedback attribute of the first logical channel, the fourth condition comprises:

32. The apparatus according to any one of claims 19 to 31, further comprising:

wherein the fifth condition includes at least one of:

33. The apparatus of claim 32, wherein the device comprises a plurality of sensors,

the mismatch of the Destination L2ID type of the first logical channel and the configuration of at least one first carrier associated with the first logical channel comprises the following steps:

the Destination L2ID type of the first logical channel is a type for SL discovery, and any carrier configuration of the at least one first carrier does not include: a transmission dedicated resource pool configuration for SL discovery, and a transmission shared resource pool configuration for SL communication and SL discovery.

34. The apparatus of claim 32, wherein the fourth determining module is specifically configured to:

or,

35. The apparatus of claim 32, wherein the at least one first carrier associated with the first logical channel comprises any one of:

At least one carrier that allows use;

at least one candidate carrier;

at least one selected carrier.

36. The apparatus of claim 19, wherein the apparatus further comprises:

37. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the carrier selection method of any one of claims 1 to 18.

38. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the carrier selection method according to any of claims 1 to 18.