WO2019153344A1

WO2019153344A1 - Process management method and terminal

Info

Publication number: WO2019153344A1
Application number: PCT/CN2018/076499
Authority: WO
Inventors: 刘航; 李明超; 王和俊; 肖潇
Original assignee: 华为技术有限公司
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2019-08-15

Abstract

The embodiments of the present application provide a process management method and a terminal, for optimizing the management of a direct communication link process during direct communication, thereby preventing the direct communication link process from triggering an abnormal carrier frequency selection. The embodiments of the present application provide the following technical solution: a first direct link process of a terminal triggers the terminal to select at least one second carrier frequency, the first direct link process belonging to a first HARQ entity of the terminal, the first HARQ entity being associated with a first carrier frequency; and when the second carrier frequency and the first carrier frequency are different carrier frequencies, the terminal stopping the first direct link process.

Description

Process management method and terminal

Technical field

The present application relates to the field of wireless communications, and in particular, to a process management method and a terminal.

Background technique

The vehicle networking system is a system for wireless communication and information exchange between a vehicle and X (vehicle to x, V2X) based on the in-vehicle network, the inter-vehicle network and the vehicle-mounted mobile Internet, in accordance with agreed communication protocols and data interaction standards. The internet. V2X can be vehicle to vehicle (V2V), vehicle to network (V2N), vehicle-to-infrastructure (V2I), vehicle-to-infrastructure (V2P) )Wait. That is, X can be a vehicle, an infrastructure, a network, a pedestrian, and the like. The car networking system aims to improve road safety, improve traffic efficiency and provide users with rich streaming services through V2X communication.

Because cellular technology has the advantages of short delay, fast speed and wide coverage, the use of cellular technology for communication between V2Xs in the Internet of Vehicles has become the main trend. As shown in Figure 1, direct communication can be used between V2Xs, using straight-through links (also known as side links, direct links, Sidelink, etc.) for communication. That is, the vehicle and the X can use the resources scheduled or configured by the network device, or the pre-configured resources are used between the vehicle and the X, and the communication is directly performed through the through link, and does not need to be transited through the network device.

In the through link communication, the terminal has at least one hybrid automatic repeat request (HARQ) entity. Wherein each HARQ entity is associated with a single carrier frequency, and when the terminal performs data transmission, the HARQ entity is responsible for selecting resources from the associated carrier frequency to enable the direct link process in the HARQ entity. Use this resource for data transmission.

If the carrier frequency associated with the HARQ entity or the transmission resource corresponding to the direct link process cannot meet the data transmission requirement of the direct link process, the direct link process may trigger the terminal to perform carrier frequency selection. When the carrier frequency selected by the terminal is different from the carrier frequency associated with the HARQ entity, the direct link process may not stop, causing the terminal to trigger the carrier frequency selection again.

Summary of the invention

The embodiment of the present application provides a process management method and a terminal, which are used to optimize the management of a direct link process in a direct connection communication, thereby preventing a direct link process from triggering an abnormal carrier frequency selection.

In a first aspect, the present application provides a process management method, where the method includes: a first direct link process of a terminal triggering the terminal to select at least one second carrier frequency, where the first direct link process belongs to The first HARQ entity of the terminal, the first HARQ entity is associated with a first carrier frequency; when the second carrier frequency and the first carrier frequency are different carrier frequencies, the terminal stops the first Direct link process.

In the technical solution provided by the embodiment of the present application, after the first direct link process triggers the terminal to select a new carrier frequency, the terminal directly stops the first direct link process, so that the first direct link The path process is no longer running, thereby preventing the first direct link process from triggering the terminal to perform carrier frequency selection again.

Optionally, the first HARQ entity further includes at least one second direct link process, where the terminal stops the at least one when the second carrier frequency and the first carrier frequency are different carrier frequencies The second direct link process.

Optionally, when the terminal meets one or more of the following conditions, the first direct link process of the terminal triggers the terminal to select at least one second carrier frequency;

Among them, the conditions include the following:

In a possible implementation, the transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not meet the transmission requirement of the transmission data corresponding to the first direct link process.

In a practical application, the transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not meet the transmission requirement of the transmission data corresponding to the first direct link process, and may include at least at least One:

The channel load on the transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency is greater than a channel congestion threshold; wherein the channel congestion threshold is configured or pre-configured by the network device. The terminal can measure the load status of the resource or the resource pool by measuring the transmission resource of the first carrier frequency or the power of the resource block in the transmission resource pool. Generally, when the resource or resource pool is used by a large number of terminals, the terminal can measure that the power on the resource block or the resource block in the resource pool is large. For a certain measurement threshold, the ratio of the resource blocks in the resource or resource pool whose power exceeds the measurement threshold to the resource blocks in the entire resource or resource pool is called the channel load ratio. The measurement threshold may be a network device configuration or pre-configured. The transmission resource or the transmission resource pool on the first carrier frequency may be used to perform the through link data transmission.

The first carrier frequency does not support the data attribute of the transmission data corresponding to the first direct link process, and the data attribute is the subcarrier frequency interval information, the transmission time interval information, the reliability information, the service type information, and the priority information. At least one of them.

In another possible implementation manner, the transmission resource corresponding to the first direct link process does not meet the transmission requirement of the transmission data corresponding to the first direct link process.

In practical applications, the transmission resource is used to transmit transmission data corresponding to the first direct link. The transmission requirement that the transmission resource corresponding to the first direct link process does not meet the transmission data corresponding to the first direct link process includes the following situations:

The transmission resource corresponding to the first direct link process cannot carry the transmission data corresponding to the first direct link process; for example, when the transmission resource corresponding to the first direct link process is small, the terminal is bound according to the protocol. After the maximum modulation code encodes the transmission data corresponding to the first through link process, it still cannot be carried on the transmission resource. The transmission resource corresponding to the first direct link may be scheduled by the network device or obtained by the terminal autonomously from the transmission resource or the transmission resource pool on the first carrier frequency. The method does not limit the manner in which the terminal obtains the transmission resource of the first direct link process, and may be obtained by means of interception selection or random selection.

In another possible implementation manner, the counter value corresponding to the first direct link process is 0.

In a practical application, in the through link communication, the terminal may adopt a resource selection mode for intercepting reservation, that is, the terminal obtains effective transmission resources by listening to the transmission resource or the transmission resource pool on the first carrier frequency, and This transmission resource is used in subsequent multiple pass link data transmissions. At this time, the first direct link process has a corresponding counter, and the counter is related to the number of times the terminal uses the transmission resource to perform the through link data transmission. When the terminal obtains a valid transmission resource, it generates a random number, which is within a certain range. The random number is the initial value of the counter, and then each time the data transmission is performed using the transmission resource, the corresponding counter is decremented by 1 until the counter is 0. At this point, the terminal can perform carrier frequency selection or resource selection again to obtain a new effective transmission resource.

In another possible implementation manner, the counter value corresponding to the first direct link process is 0, and the parameter value randomly selected by the terminal is greater than a threshold.

In practical applications, when the counter is 0, the terminal may continue to use the previous transmission resource or transmit the carrier frequency with a certain probability without performing carrier frequency selection or resource selection. The terminal can randomly select a parameter value, and when the parameter value is greater than the threshold value, the terminal re-selects carrier frequency or resource selection.

For example, if the network device configuration or pre-configuration threshold is 0.4, the terminal can select a random number from [0, 1], that is, the parameter value. Assuming that the parameter value is 0.6, since 0.6 is greater than 0.4, the terminal re-performs carrier frequency selection or resource selection.

In another possible implementation manner, the first direct link process performs a resource reselection operation or a first resource selection operation.

In this implementation, the condition that the first direct link performs the resource reselection may be the active resource reselection or the passive resource reselection, which is not limited herein.

In another possible implementation manner, the radio resource control (RRC) configuration information of the terminal is updated.

The network device can configure the basic configuration of the through link transmission by the terminal through the RRC configuration information. For example, the RRC configuration information may include a transmission resource pool in which the terminal performs the through link transmission, a parameter for performing resource selection, and the like. When the RRC configuration of the terminal is updated, for example, the resource pool or parameters in the RRC configuration information change, the terminal needs to perform resource selection or carrier frequency selection again. The RRC configuration information may include dedicated RRC signaling or a system information block (SIB).

In another possible implementation manner, the first direct link process does not use the transmission resource corresponding to the first direct link process process for N consecutive times, and the N is a positive integer.

In the direct link communication, the terminal may adopt the resource selection mode of the interception reservation, that is, the terminal obtains the effective transmission resource by listening to the transmission resource or the transmission resource pool on the first carrier frequency, and in the subsequent multiple times. This transmission resource is used in the pass-through link data transmission. However, the style of the transmission resources reserved by the terminal may not exactly match the style of the data. When the transmission resource is not used for N consecutive times, it indicates that the style of the reserved transmission resource may not match the pattern of the data, and the terminal may perform resource selection or carrier frequency selection again. The N may be a network device configuration or pre-configured. This configuration can also effectively avoid waste of transmission resources.

In another possible implementation manner, the timer expires, and the timer is used to determine a time limit for the terminal to use the first carrier frequency.

The network device can configure a timer to limit the time limit for the terminal to use the carrier frequency. When the timer expires, the terminal re-selects the resource or selects the carrier frequency. The timer can be included in the pre-configuration information.

In another possible implementation manner, the terminal receives the indication information sent by the network device, where the indication information is used to instruct the terminal to perform carrier frequency selection.

In an actual application, the network device may send indication information to the terminal to instruct the terminal to perform carrier frequency selection. The indication information may be included in the RRC signaling, and the terminal obtains the indication information by acquiring the RRC signaling; or is a downlink data packet sent by the network device to the terminal, for example, may be included in a media access control control element (media) The access control control element (MAC CE), the terminal obtains the indication information by acquiring the MAC CE in the downlink data packet, or is included in the physical downlink control channel (PDCCH), and the terminal is connected. The downlink control indicator (DCI) on the PDCCH is acquired to obtain the indication information.

In the technical solution provided by the embodiment of the present application, the terminal triggers the terminal to perform carrier frequency selection as long as any one of the conditions is met, thereby ensuring stability of data transmission.

Optionally, the stopping, by the terminal, the first direct link process may include the following methods:

In a possible implementation manner, the terminal suspends, clears, revokes, initializes, or resets the first direct link process.

In another possible implementation, the terminal may perform at least one of the following: the terminal clears configuration information corresponding to the first direct link process;

The terminal clears an authorization configuration corresponding to the first direct link process;

The terminal resets or initializes the counter;

The terminal clears buffer area data of the first direct link process;

The terminal determines that the transmission resource corresponding to the first direct link process is no longer valid.

In the technical solution provided by the embodiment of the present application, the terminal determines, by using multiple manners, that the first direct link process does not trigger the terminal to perform carrier frequency selection, thereby preventing the first direct link process from performing carrier frequency selection. The infinite loop.

Optionally, at least one second direct link process is further included in the HARQ entity of the terminal, and the second direct link process may not trigger the terminal to perform carrier frequency selection, when the terminal selects at least one After the second carrier frequency, the terminal may also stop the at least one second direct link process. The method for the terminal to stop the second direct link process may be the same as the method for the terminal to stop the first direct link process, and details are not described herein again.

In a second aspect, the embodiment of the present application provides a terminal, where the terminal has the function of implementing the terminal in the foregoing method. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation manner, the terminal includes:

a carrier selection module, the first direct link process of the terminal triggers selection of at least one second carrier frequency, the first direct link process belongs to a first HARQ entity of the terminal, and the first HARQ entity Associated with the first carrier frequency;

And a processing module, configured to stop the first direct link process when the second carrier frequency and the first carrier frequency are different carrier frequencies.

In another possible implementation manner, the terminal includes:

One or more processors, the processor performing the following steps:

The first direct link process of the terminal triggers selection of at least one second carrier frequency, the first direct link process belongs to a first HARQ entity of the terminal, and the first HARQ entity and the first carrier frequency Association

When the second carrier frequency and the first carrier frequency are different carrier frequencies, stopping the first direct link process.

In a third aspect, an embodiment of the present application provides a computer readable storage medium, including instructions, when the instruction is run on a computer, the computer executes the foregoing method.

In a fourth aspect, an embodiment of the present application provides a computer program product comprising instructions for performing the above method when the computer program product runs on a computer.

DRAWINGS

1 is a schematic diagram of a V2X communication scenario in an embodiment of the present application;

2 is another schematic diagram of a V2X communication scenario in an embodiment of the present application;

3 is a schematic diagram of an embodiment of a process management method according to an embodiment of the present application;

4 is a schematic diagram of a HARQ entity of a terminal in an embodiment of the present application;

FIG. 5 is a schematic diagram of a carrier frequency selection performed by a terminal according to an embodiment of the present application; FIG.

FIG. 6 is a schematic diagram of another embodiment of a process management method according to an embodiment of the present application; FIG.

FIG. 7 is another schematic diagram of a terminal performing carrier frequency selection according to an embodiment of the present application; FIG.

FIG. 8 is a schematic diagram of an embodiment of a terminal in an embodiment of the present application;

FIG. 9 is a schematic diagram of another embodiment of a terminal in an embodiment of the present application.

Detailed ways

The embodiment of the present invention provides a process management method and a terminal, which are used to optimize the management of a direct link process in a direct connection communication, thereby preventing a direct link process from triggering an abnormal carrier frequency selection.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present application and the above figures are used to distinguish similar objects without having to use To describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

Before describing the technical solutions of the embodiments of the present application, the technical scenarios of the embodiments of the present application are first described with reference to the accompanying drawings.

The methods provided in the embodiments of the present application are applicable to a long term evolution (LTE) system, or a wireless communication system using a radio access technology such as code division multiple access and orthogonal frequency division multiple access. In addition, it can also be applied to subsequent evolution systems using the LTE system, such as a fifth generation (5G) communication system, a new radio (NR) system, and an Internet of Things system. The embodiment of the present application can also be applied to a WLAN system, which is not limited by the present invention.

The technical solutions provided by the various embodiments of the present application may be applied to all scenarios for communicating through a through link, including but not limited to a V2X communication scenario, a Device to Device (D2D) application scenario, and a machine to machine (Machine to Machine, M2M) application scenario. The V2X scenario mainly supports two communication scenarios as shown in FIG. 1 and FIG. 2. As shown in FIG. 1, the terminal 1 and the terminal 2 communicate through a through link, and the transmission resources between the terminals can be scheduled, configured, or preconfigured by the network device. The pre-configuration refers to that the terminal is pre-configured inside the terminal at the time of shipment, or is pre-configured by the network, and the storage terminal is internal.

In the through link, the communication resources (also called transmission resources) between terminals are obtained in the following modes:

One mode is the network device scheduling mode. That is, the terminal sends the request information to the network device, and after receiving the request information, the network device dynamically or semi-dynamically schedules resources for the through link communication of the terminal. Another mode is the terminal autonomous selection mode. That is, the network device allocates a resource or a resource set to the terminal through RRC signaling, and the terminal autonomously selects the resource from the resource or the resource set to communicate, or the terminal acquires the resource from the pre-configured resource or the resource set to perform communication. The resource set contains several time-frequency resources. It can be understood that the resource collection can also be a resource pool. The configured or pre-configured resource or resource pool is used for direct link data transmission, so it is also referred to as a transmission resource or a transmission resource pool.

The RRC signaling may be an SIB message or a dedicated RRC signaling.

As shown in Figure 2, V2X communication is communicated through network device relay. That is, the data sent between the terminals needs to be forwarded through the network device, and the terminal 1 sends the data to the network device through the uplink between the network device, and the network device sends the data to the downlink through the downlink between the terminal and the terminal 2. The terminal 2, wherein the network device sends data to the terminal 2 may be unicast or broadcast.

The terminal described in FIG. 1 and FIG. 2 may be a terminal device located in the vehicle in the V2X (for example, an in-vehicle terminal device, a terminal device carried by a user riding the vehicle), or may be located on another infrastructure or network. The terminal device can also be the vehicle terminal itself or the like. The terminal may also include a chip, an integrated circuit, or a processor.

The terminal device in the present application may be a wireless terminal, and the wireless terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, may be portable, pocket, handheld, computer Built-in or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, personal communication service (PCS) telephone, cordless telephone, session initiation protocol (SIP) telephone, wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA) and other equipment. The terminal may also be a subscriber unit (SU), a subscriber station (SS), a mobile station (MS), a remote station (RS), and a remote terminal (RT). ), an access terminal (AT), a user terminal (UT), a user agent (UA), a user equipment, or a user equipment (UE).

Meanwhile, the network device described in FIGS. 1 and 2 includes a wireless device. Specifically, the wireless device may be an access point (AP), and may also be other network devices, such as a base station, an enhanced base station, or a relay with scheduling function, or a device with a base station function. The base station may be an evolved Node B (eNB) in an LTE system, or a new radio node (NR node, gNB) in a future 5G network, or a base station in other systems, where the base station may be in a form It is a centralized type, for example, a Cloud Radio Access Network, a base station in the form of a Cloud RAN, which may be distributed, such as a conventional GSM base station, or separate from control and forwarding, such as gNB, which is not limited in the embodiment of the present application.

In the through link communication, the terminal has at least one hybrid automatic repeat request (HARQ) entity. Wherein each HARQ entity is associated with a single carrier frequency, and when the terminal performs data transmission, the HARQ entity is responsible for selecting resources from the associated carrier frequency to enable the direct link process in the HARQ entity. Use this resource for data transmission. Since the resource is used for data transmission, it is also called a transmission resource.

The direct link process may trigger the terminal to perform carrier frequency selection. For example, when the carrier frequency associated with the HARQ entity or the resource corresponding to the direct link process cannot meet the data transmission of the direct link process When the demand is connected, the direct link process may trigger the terminal to perform carrier frequency selection. When the carrier frequency selected by the terminal is different from the carrier frequency associated with the HARQ entity, the direct link process may not stop, causing the trigger to be triggered again. The terminal performs carrier frequency selection.

In the embodiment of the present application, the carrier frequency has the same meaning as the carrier.

In order to solve the problem, the embodiment of the present application provides the following technical solution: the first direct link process of the terminal triggers the terminal to select at least one second carrier frequency, where the first direct link process belongs to the terminal. a first HARQ entity, the first HARQ entity being associated with a first carrier frequency; when the second carrier frequency and the first carrier frequency are different carrier frequencies, the terminal stops the first direct link process.

For example, as shown in FIG. 3, an embodiment of the process management method in the embodiment of the present application includes:

301. The first direct link process of the terminal triggers the terminal to select at least one second carrier frequency, where the first direct link process belongs to a first HARQ entity of the terminal, and the first HARQ entity and the first A carrier frequency association.

The first HARQ entity of the terminal includes a first direct link process. The first HARQ entity is associated with a single carrier frequency, and when the terminal performs data transmission, the first HARQ entity is responsible for selecting a resource from the first carrier frequency, so that the first direct connection The link process uses this resource for data transmission.

In a direct communication scenario, the terminal has at least one HARQ entity. As shown in FIG. 4, the terminal has two HARQ entities, where the first HARQ entity in FIG. 4 includes a first direct link process and a second. The direct link process, the associated carrier frequency of the first HARQ entity is the first carrier frequency; the second HARQ entity in FIG. 4 includes a third direct link process, and the associated carrier frequency of the second HARQ entity Is the second carrier frequency.

Optionally, the association relationship between the first HARQ entity and the first carrier frequency is a one-to-one association.

When the first direct link process triggers the terminal to perform carrier frequency selection, the terminal selects at least one second carrier frequency.

It can be understood that, when the terminal selects the second carrier frequency, the terminal may use the channel load condition of the at least one carrier frequency and the capability supported by the terminal itself (eg, the number of transmission chains, the transmission power), and the like from the network. The at least one second carrier frequency is determined from at least one carrier frequency of the device configuration or pre-configuration. The carrier frequency selection includes carrier frequency reselection.

Optionally, the at least one second carrier frequency is selected for the first direct link process.

In this embodiment, when the terminal meets one or more of the following conditions, the first direct link process triggers the terminal to perform carrier frequency selection:

In a possible implementation manner, the transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not meet the transmission requirement of the transmission data corresponding to the first direct link process;

The transmission data corresponding to the first direct link process includes, but is not limited to, a media access control protocol data unit (MAC PDU).

In the present application, the transmission data corresponding to the first through link process is also referred to as data corresponding to the first through link process, and the meanings of the two are the same.

Specifically, the transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not meet the transmission requirement of the transmission data corresponding to the first direct link process, and may include at least one of the following situations: :

The transmission resource on the first carrier frequency or the transmission resource pool channel load on the first carrier frequency is greater than a channel congestion threshold;

The transmission resource on the first carrier frequency or the channel load corresponding to the transmission resource pool on the first carrier frequency is used to describe the transmission resource on the first carrier frequency or the load status of the transmission resource pool on the first carrier frequency. For example, in a scenario of a direct link, the network device may configure a transmission resource or a transmission resource pool for the terminal, where the transmission resource or the transmission resource pool is shared, so multiple terminals may share the configured transmission resource or transmission resource pool. Direct link data transmission. The terminal measures the load status of the resource or the resource pool by measuring the power on the resource or the resource block in the resource pool. Generally, when the resource or resource pool is used by a large number of terminals, the terminal can measure that the power on the resource block or the resource block in the resource pool is large. For a certain measurement threshold, the ratio of the resource block in the resource or resource pool that exceeds the measurement threshold to the resource block in the entire resource or resource pool is called the channel load ratio. The resource block may also be a subchannel. Exemplarily, the channel load ratio may be the channel busy ratio (CBR) defined in section 5.1.30 of the third generation mobile partner scheme TS 36.214 V15.0.1 protocol, and the higher the channel load, the higher the channel congestion level.

The network device configures or pre-configures a channel congestion threshold corresponding to the first carrier frequency, when the transmission resource on the first carrier frequency or the channel load of the transmission resource pool on the first carrier frequency is greater than a channel congestion threshold, the first carrier frequency The uplink transmission resource or the resource block in the transmission resource pool on the first carrier frequency receives a large interference, and continues to use the transmission resource or the transmission resource pool cannot satisfy the transmission data corresponding to the first through link process. The transmission requirement requires carrier frequency selection or resource selection; when the transmission resource on the first carrier frequency or the channel load of the transmission resource pool on the first carrier frequency is less than or equal to the channel congestion threshold, the terminal continues to use the transmission resource. Or transfer resource pools. The correspondence between the first carrier frequency and the channel congestion threshold may be displayed or implicit.

For example, the network device configures a channel congestion threshold corresponding to the first resource pool in the first carrier frequency through RRC signaling. When the channel load rate of the first resource pool of the first carrier frequency is lower than the channel congestion threshold corresponding to the first resource pool, the terminal continues to use the first resource pool on the first carrier frequency; The channel load rate of the first resource pool is greater than the channel congestion threshold corresponding to the first resource pool, and the terminal may perform carrier frequency selection again or perform resource selection again. The correspondence between the first resource pool and the channel congestion threshold may be displayed or implicit.

In another possible implementation manner, the first carrier frequency does not support data attributes of the transmission data corresponding to the first direct link process, and the data attributes are subcarrier frequency interval information, transmission time interval information, and reliability. At least one of sex information, business type information, and priority information.

In the direct link communication, each of the through link data has a corresponding data attribute, and the data attribute may be in the subcarrier frequency interval information, the transmission time interval information, the reliability information, the service type information, and the priority information. At least one. The data attribute in this embodiment may be an identifier, an index or other information pointing to the data attribute.

Taking the priority information as an example, the through link data of the terminal is from the upper layer (that is, above the access layer), and the upper layer usually assigns a data priority information to the data, and the data and the priority information of the data. Send it to the access layer together. The priority information may be a priority identifier, an index, or other information pointing or prioritized. Generally, data corresponding to different priority information is processed differently at the access layer. For example, in order to ensure high-priority data transmission, high-priority data has certain advantages in resource selection, for example, More transmission resources, etc.

Exemplarily, the terminal may have multiple different types of services, so the through link data has corresponding service type information. The different types of services mentioned above may be services corresponding to different receiving ends and/or different transmitting ends. For example, different types of services mentioned above may be V2V services, V2P services, V2I services, P2V services, P2P services, and P2I services. Wait. Alternatively, the different types of services mentioned above may also be passed through the application layer identifier carried by the application layer or sent by the upper layer (above the access layer), such as ITS-AID: ITS Application Identifier or PSID: Provider Service Identifier. distinguish.

Exemplarily, the through link data may be delivered to a certain logical channel, and the network device may configure subcarrier frequency interval information and/or transmission time interval information corresponding to the logical channel, that is, data in the logical channel can only be loaded. On a transmission resource having a subcarrier frequency interval and/or a transmission time interval corresponding to the logical channel, of course, a single logical channel may correspond to one or more subcarrier frequency intervals. The subcarrier spacing is also referred to as subcarrier spacing (also referred to as subcarrier spacing). Exemplarily, for a terminal with a relatively high moving speed, since the moving speed is high, the Doppler frequency is large, and in order to overcome the frequency offset, a larger subcarrier frequency interval is generally adopted. The transmission time interval information is used to indicate the maximum transmission delay corresponding to the data packet of the terminal during transmission, and the transmission delay may be, but not limited to, an end-to-end delay, an air interface delay, and the like. Different transmission time intervals reflect different transmission delay requirements of data in different logical channels.

Illustratively, different pass-through link data corresponds to different destination addresses. For example, the data packet 1 can be sent to the terminal 1, and the second data packet 2 is sent to the terminal 2. Optionally, when the terminal performs the direct link information transmission in the manner of a broadcast message, the destination address may be mapped to the service type.

Illustratively, different pass-through link data packets correspond to different transmission reliability requirements, ie reliability information. Reliability reflects the transmission reliability requirements/level of the data. This transmission reliability requirement can be, but is not limited to, end-to-end transmission reliability requirements. Exemplarily, the transmission reliability may be defined as a 1-bit error ratio, a 1-symbol error ratio, or a 1-packet error ratio. )Wait.

For example, the network device can configure the data attribute corresponding to the first carrier frequency, that is, only the through link data having the corresponding data attribute can use the resource on the first carrier frequency to transmit the data, when the resource on the first carrier frequency When the resource pool on the first carrier frequency does not support the data attribute of the transmission data corresponding to the direct link process, the terminal needs to perform carrier frequency selection or resource selection.

For example, the network device configures the first carrier frequency to correspond to the priority 1 through RRC signaling. If the priority of the through link data is 2, the first carrier frequency cannot be used, and the terminal performs carrier frequency selection or resource selection.

It should be noted that the transmission data of the first direct link may be a MAC PDU composed of multiple direct link data, and the corresponding data attribute may be corresponding to the data of the multiple direct link data respectively. The property is determined.

For example, the medium access control layer MAC layer encapsulates the data, and the data in the logical channel 1 and the data in the logical channel 2 constitute a MAC PDU, wherein the data priority in the logical channel 1 is 1, and the logical channel 2 If the data priority is 2, the data priority of the MAC PDU is 1. Other similar situations are not described here.

In another possible implementation manner, the transmission resource corresponding to the first direct link process does not meet the transmission requirement of the transmission data corresponding to the first direct link process;

In this embodiment, the transmission resource corresponding to the direct link process is also generally described as a resource corresponding to the direct link process, and the meanings of the two are the same. The transmission resource or the resource is used to transmit the first straight The transmission data corresponding to the link process.

Specifically, the transmission resource corresponding to the first direct link process does not meet the transmission requirement of the transmission data corresponding to the first direct link process, and includes the following situations:

The transmission resource corresponding to the first link process cannot transmit the transmission data corresponding to the first direct link process. For example, when the transmission resource corresponding to the first direct link process is small, the terminal cannot encode the transmission data corresponding to the first through link process after encoding according to the maximum modulation code of the protocol constraint. On the transmission resource. The transmission resource corresponding to the first direct link may be scheduled by the network device or may be obtained by the terminal autonomously from the transmission resource or the transmission resource set on the first carrier frequency. In this embodiment, the terminal can listen to the selection or randomly select the transmission resource, and the specific manner is not limited herein. The set of transmission resources may be a pool of transmission resources.

The transmission resource corresponding to the first direct link process does not support the data attribute of the transmission data corresponding to the first direct link process, and the data attribute is subcarrier frequency interval information, transmission time interval information, and reliability. At least one of information, service type information, and priority information.

The transmission resource corresponding to the first link process does not support the data attribute of the transmission data corresponding to the first direct link process and the transmission data corresponding to the first carrier frequency that does not support the first direct link process. The data attributes are similar and will not be described here.

In another possible implementation manner, the counter value corresponding to the first direct link process is 0;

In the present embodiment, in the through link communication, the terminal may adopt the resource selection mode of the interception reservation, that is, the terminal obtains the effective transmission resource by listening to the transmission resource or the transmission resource pool on the first carrier frequency, and This transmission resource is used in subsequent multiple pass link data transmissions. At this time, the first direct link process has a corresponding counter, and the counter is related to the number of times the terminal uses the transmission resource to perform the through link data transmission.

Generally, when a terminal obtains a valid transmission resource, it generates a random number, which is within a certain range. The random number is the initial value of the counter, and then the data transmission is sequentially performed every time the transmission resource is used, and the corresponding counter is decremented by 1 until the counter is 0. At this point, the terminal can perform carrier frequency selection or resource selection again to obtain a new effective transmission resource.

In a possible implementation manner, the counter value corresponding to the first direct link process is 0, and the parameter value randomly selected by the terminal is greater than a threshold.

In practical applications, when the counter is 0, the terminal may continue to use the previous transmission resource or the transmission carrier frequency with a certain probability without performing carrier frequency selection or resource selection. The terminal can randomly select a parameter value, and when the parameter value is greater than the threshold, the terminal re-selects carrier frequency or resource selection.

In this implementation, the condition that the first direct link performs the resource reselection may be the active resource reselection or the passive resource reselection, which is not limited herein. In this application, resource selection includes resource reselection unless otherwise specified.

In another possible implementation manner, the RRC configuration information of the terminal is updated.

The network device can configure the basic configuration of the through link transmission by the terminal through the RRC configuration information. For example, the RRC configuration information may include a transmission resource pool in which the terminal performs the through link transmission, a parameter for performing resource selection, and the like. When the RRC configuration of the terminal is updated, for example, the transmission resource pool or parameters in the RRC configuration information changes, the terminal needs to perform resource selection or carrier frequency selection again. The RRC configuration information may include dedicated RRC signaling or SIB.

In the actual application, in the direct link communication, the terminal may adopt the resource selection mode of the interception reservation, that is, the terminal obtains the effective transmission resource by listening to the transmission resource or the transmission resource pool on the first carrier frequency, and This transmission resource is used in subsequent multiple pass link data transmissions. However, the style of resources reserved by the terminal may not exactly match the style of the data. Exemplarily, the pattern may be a period. In this case, the partially reserved resource may not be used. When the transmission resource is not used by the continuous N, the style of the reserved transmission resource may not match the style of the data, and the terminal may Re-select resource or carrier frequency. The N may be a network device configuration or pre-configured. This configuration can also effectively avoid waste of transmission resources.

In another possible implementation, the timer expires, and the timer is used to determine a time limit for the terminal to use the first carrier frequency;

In another possible implementation, the terminal receives the indication information sent by the network device, where the indication information is used to indicate that the terminal performs carrier frequency selection.

The network device may send indication information to the terminal to instruct the terminal to perform carrier frequency selection.

The indication information may be included in the RRC signaling, and the terminal obtains the indication information by acquiring the RRC signaling;

Or the downlink data packet sent by the network device to the terminal, for example, may be included in the MAC CE medium access control control element, and the terminal acquires the indication information by acquiring the MAC CE in the downlink data packet;

Or included in the PDCCH, the terminal acquires the information for indicating by acquiring the DCI on the PDCCH.

302. When the second carrier frequency and the first carrier frequency are different carrier frequencies, the terminal stops the first direct link process.

When the at least one second carrier frequency is different from the first carrier frequency, when the at least one second carrier frequency does not include the first carrier frequency, the terminal stops the first direct link process.

In this embodiment, the method for stopping the first direct link process by the terminal includes the following possible situations:

The terminal suspending the first direct link process includes the terminal freezing all parameters and the buffer area in the first direct link process, and suspending the first direct link process.

The process of the terminal clearing the first direct link process includes the terminal clearing all parameters and the buffer area in the first direct link process.

The process of canceling the first direct link process by the terminal includes the terminal revoking the first direct link process, including all parameters and the buffer area in the first direct link process, and the first direct link is no longer present in the terminal. Road process.

Initializing the first direct link process by the terminal includes the terminal initializing all parameters in the first direct link process.

Resetting the first direct link process by the terminal includes the terminal resetting at least one parameter in the first direct link process.

The parameter in the first direct link process includes at least one of a counter corresponding to the first direct link process and a transmission resource corresponding to the first direct link process, where the buffer is stored. Transmission data corresponding to the first direct link process. The corresponding relationship may be displayed or implicit.

In another possible implementation, the stopping, by the terminal, the first direct link process includes one or more of the following:

The terminal clears configuration information corresponding to the first direct link process;

Specifically, the configuration information corresponding to the first direct link process includes: first carrier frequency information, a channel congestion threshold, a threshold, a first direct link process number, and the first direct connection is not used continuously. At least one of the number of transmission resources corresponding to the link process process and the data attribute of the transmission data.

Specifically, the authorization configuration may be a transmission resource corresponding to the first direct link process.

The terminal resets or initializes the counter;

Specifically, the counter is reset or initialized. Optionally, the counter may be configured to be 0 or an illegal value, for example, a negative value.

The terminal clears buffer area data of the first direct link process;

Optionally, in this embodiment, if the second carrier frequency selected by the terminal does not have an associated HARQ entity, the terminal will newly create a HARQ entity associated with the second carrier frequency and be included in the HARQ entity. In the pass-through link process, and use the newly established pass-through link process for data transmission;

Optionally, if the second carrier frequency selected by the terminal has an associated HARQ entity, the terminal may transfer the data transmission task of the first through link process to the HARQ entity associated with the second carrier frequency. The specific operation is as follows: if there is a through link process in the HARQ entity associated with the second carrier frequency, the terminal may use the process in the HARQ entity associated with the second carrier frequency to perform data transmission; If there is no through link process in the HARQ entity associated with the second carrier frequency, the terminal establishes a new through link process in the HARQ entity associated with the second carrier frequency and performs the new through link process. data transmission.

As shown in FIG. 5, the terminal has two HARQ entities, where the first HARQ entity in FIG. 5 includes a first through link process and a second through link process, and the associated carrier frequency of the first HARQ entity The first carrier frequency is included in the second HARQ entity in FIG. 5, and the associated carrier frequency of the second HARQ entity is the second carrier frequency. Assuming that the first through link process in FIG. 5 triggers the terminal to perform carrier frequency selection, and the terminal selects the second carrier frequency associated with the second HARQ entity, the terminal can directly utilize the third through link. The process performs the task of the first through link process. The second direct link process continues to operate in the first HARQ entity.

In this embodiment, after the terminal selects a new carrier frequency, the terminal directly stops the first through link process, so that the first through link process in the HARQ entity no longer triggers the terminal to perform carrier frequency selection.

For details, please refer to FIG. 6 , another embodiment of the process management method in the embodiment of the present application includes:

601. The first direct link process of the terminal triggers the terminal to select at least one second carrier frequency, where the first direct link process belongs to the first HARQ entity of the terminal, and the first HARQ entity is first loaded. Frequency association.

601 is similar to 301 and will not be described here.

602. When the first HARQ entity further includes at least one second direct link process, the terminal stops the first direct link process and the second direct link process.

The terminal stops the first direct link process and the second direct link process, that is, the terminal stops all direct link processes in the first HARQ entity.

The process of stopping the second direct link process is the same as the process of stopping the first direct link process, and details are not described herein.

Alternatively, the terminal may directly revoke the first HARQ entity, ie, revoke all parameters and buffers associated with the first HARQ entity.

Optionally, if the second carrier frequency selected by the terminal does not have an associated HARQ entity, the terminal will create a new HARQ entity and a direct link process, and use the newly established direct link process to perform data transmission; The second carrier frequency selected by the terminal has an associated HARQ entity, and the terminal will transfer the data transmission task of the first direct link process to the HARQ entity associated with the second carrier frequency, exemplary. If the direct link process exists in the HARQ entity associated with the second carrier frequency, the terminal directly uses the process in the HARQ entity associated with the second carrier frequency to perform data transmission; if the second carrier If there is no direct link process in the frequency-associated HARQ entity, the terminal establishes a new direct link process in the HARQ entity associated with the second carrier frequency, and performs a new direct link process. data transmission.

As shown in FIG. 7, the terminal has two HARQ entities, wherein the first HARQ entity in FIG. 7 includes a first direct link process and a second direct link process, and the associated relationship of the first HARQ entity is included. The frequency is the first carrier frequency; the second HARQ entity in FIG. 7 includes a third direct link process, and the associated carrier frequency of the second HARQ entity is the second carrier frequency. Assuming that the first direct link process in FIG. 7 triggers the terminal to perform carrier frequency selection, and the terminal selects the second carrier frequency associated with the second HARQ entity, the terminal may directly utilize the third direct link. The path process performs the task of the first direct link process, and the second direct link process also stops.

The process management method in the embodiment of the present application has been described above. The terminal in the embodiment of the present application is described below.

For details, please refer to FIG. 8 , an embodiment of the terminal in the embodiment of the present application includes:

The carrier frequency selection module 801 is configured to trigger, by the first direct link process for the terminal, to select at least one second carrier frequency, where the first direct link process belongs to the first HARQ entity of the terminal, where The first HARQ entity is associated with the first carrier frequency;

The processing module 802 is configured to stop the first direct link process when the second carrier frequency and the first carrier frequency are different carrier frequencies.

Optionally, the first HARQ entity further includes at least one second direct link process, and the processing module 802 is further configured to: when the second carrier frequency and the first carrier frequency are different carrier frequencies Stopping the at least one second direct link process.

Optionally, the carrier frequency selection module 801 is configured to: when the one or more of the following conditions are met, the first direct link process of the terminal triggers the terminal to select at least one second carrier frequency. The conditions include:

The transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not satisfy the transmission requirement of the transmission data corresponding to the first direct link process;

The transmission resource corresponding to the first direct link process does not meet the transmission requirement of the transmission data corresponding to the first direct link process;

The counter value corresponding to the first direct link process is 0;

The counter value corresponding to the first direct link process is 0, and the parameter value randomly selected by the terminal is greater than a threshold;

The first direct link process performs a resource reselection operation or a first resource selection operation;

The RRC configuration information of the terminal is updated;

The first direct link process does not use the transmission resource corresponding to the first direct link process process for N consecutive times, and the N is a positive integer;

The timer expires, and the timer is used to determine a time limit for the terminal to use the first carrier frequency;

The terminal receives the indication information sent by the network device, where the indication information is used to instruct the terminal to perform carrier frequency selection.

Optionally, the transmission resource of the first carrier frequency or the transmission resource pool of the first carrier frequency does not meet the transmission requirement of the transmission data corresponding to the first direct link process, and includes one or more of the following:

The transmission resource on the first carrier frequency or the transmission resource pool channel load on the first carrier frequency is greater than the first channel congestion threshold;

The first carrier frequency does not support the data attribute of the transmission data corresponding to the direct link process, where the data attribute is subcarrier frequency interval information, transmission time interval information, reliability information, service type information, and priority information. At least one of them.

Optionally, the transmission requirement that the transmission resource corresponding to the first direct link process does not meet the transmission data corresponding to the first direct link process includes one or more of the following:

The transmission resource corresponding to the first direct link process cannot transmit the transmission data corresponding to the first direct link process;

Optionally, the processing module 802 is specifically configured to suspend, clear, revoke, initialize, or reset the first direct link process.

The terminal suspends, clears, revokes, initializes, or resets the first direct link process.

Optionally, the processing module 802 is specifically configured to perform at least one of the following:

The terminal resets or initializes the counter;

The terminal clears buffer area data of the first direct link process;

In this embodiment, after the carrier frequency selection module 801 selects the carrier frequency, the processing module 802 stops the first direct link when the second carrier frequency and the first carrier frequency are different carrier frequencies. Road process.

For details, please refer to FIG. 9 , another embodiment of the terminal in the embodiment of the present application includes:

Transceiver 901, processor 902, bus 903;

The transceiver 901 is connected to the processor 902 via the bus 903;

The bus 903 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.

The processor 902 can be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP.

Processor 902 can also further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.

Referring to FIG. 9, the terminal may further include a memory 904. The memory 904 may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a flash memory ( A flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory 904 may also include a combination of the above types of memories.

Optionally, the memory 904 can also be used to store program instructions, and the processor 902 calls the program instructions stored in the memory 904, and can perform one or more steps in the embodiment shown in FIG. 3 to FIG. 7, or The selected implementation implements the functions of the terminal in the above method.

The processor 902 performs the following steps:

The transceiver 901 also performs the functions of data transmission and reception in FIGS. 3 to 7.

In this embodiment, the processor 902 stops the first direct link process directly after selecting a new carrier frequency, so that the first direct link process in the HARQ entity no longer triggers the terminal to perform carrier frequency selection.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents. The modifications and substitutions of the embodiments do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A process management method, which is applied to the field of wireless communications, and includes:

The first direct link process of the terminal triggers the terminal to select at least one second carrier frequency, where the first direct link process belongs to the first HARQ entity of the terminal, and the first HARQ entity and the first Frequency association

When the second carrier frequency and the first carrier frequency are different carrier frequencies, the terminal stops the first direct link process.
The method according to claim 1, wherein the first HARQ entity further includes at least one second direct link process, the method further comprising:

When the second carrier frequency and the first carrier frequency are different carrier frequencies, the terminal stops the at least one second direct link process.
Method according to claim 1 or 2, characterized in that

The first direct link process of the terminal triggering the terminal to select at least one second carrier frequency includes:

When the terminal satisfies at least one of the following conditions, the first direct link process of the terminal triggers the terminal to select at least one second carrier frequency;

The conditions include:

The transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not satisfy the transmission requirement of the transmission data corresponding to the first direct link process;

The transmission resource corresponding to the first direct link process does not meet the transmission requirement of the transmission data corresponding to the first direct link process;

The counter value corresponding to the first direct link process is 0;

The counter value corresponding to the first direct link process is 0, and the parameter value randomly selected by the terminal is greater than a threshold;

The first direct link process performs a resource reselection operation or a first resource selection operation;

The radio resource control RRC configuration information of the terminal is updated;

The first direct link process does not use the transmission resource corresponding to the first direct link process process for N consecutive times, and the N is a positive integer;

The timer expires, and the timer is used to determine a time limit for the terminal to use the first carrier frequency;

The terminal receives the indication information sent by the network device, where the indication information is used to instruct the terminal to perform carrier frequency selection.
The method according to claim 3, wherein the transmission resource of the first carrier frequency or the transmission resource pool on the first carrier frequency does not satisfy the transmission requirement of the transmission data corresponding to the first direct link process Includes one or more of the following:

The transmission resource on the first carrier frequency or the transmission resource pool channel load on the first carrier frequency is greater than a channel congestion threshold;

The first carrier frequency does not support the data attribute of the transmission data corresponding to the direct link process, where the data attribute is subcarrier frequency interval information, transmission time interval information, reliability information, service type information, and priority information. At least one of them.
The method according to claim 3, wherein the transmission resource corresponding to the first direct link process does not satisfy the transmission requirement of the transmission data corresponding to the first direct link process, and includes one or more of the following: item:

The transmission resource corresponding to the first direct link process cannot transmit the transmission data corresponding to the first direct link process;

The transmission resource corresponding to the first direct link process does not support the data attribute of the transmission data corresponding to the first direct link process, and the data attribute is subcarrier frequency interval information, transmission time interval information, and reliability. At least one of information, service type information, and priority information.
The method according to any one of claims 1 to 5, wherein the stopping the first direct link process by the terminal comprises:

The terminal suspends, clears, revokes, initializes, or resets the first direct link process.
The method according to any one of claims 1 to 5, wherein the stopping the first direct link process by the terminal comprises one or more of the following:

The terminal clears configuration information corresponding to the first direct link process;

The terminal clears an authorization configuration corresponding to the first direct link process;

The terminal resets or initializes the counter;

The terminal clears buffer area data of the first direct link process;

The terminal determines that the transmission resource corresponding to the first direct link process is no longer valid.
A terminal, comprising:

a carrier selection module, the first direct link process of the terminal triggers selection of at least one second carrier frequency, the first direct link process belongs to a first HARQ entity of the terminal, and the first HARQ entity Associated with the first carrier frequency;

And a processing module, configured to stop the first direct link process when the second carrier frequency and the first carrier frequency are different carrier frequencies.
The terminal according to claim 8, wherein the first HARQ entity further includes at least one second direct link process, and the processing module is further configured to: when the second carrier frequency and the first When the carrier frequency is a different carrier frequency, the at least one second direct link process is stopped.
The terminal according to claim 8 or 9, wherein the carrier frequency selection module is specifically configured to: when the one or more of the following conditions are met, the first direct link process of the terminal triggers the The terminal selects at least one second carrier frequency;

The conditions include:

The transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not satisfy the transmission requirement of the transmission data corresponding to the first direct link process;

The transmission resource corresponding to the first direct link process does not meet the transmission requirement of the transmission data corresponding to the first direct link process;

The counter value corresponding to the first direct link process is 0;

The counter value corresponding to the first direct link process is 0, and the parameter value randomly selected by the terminal is greater than a threshold;

The first direct link process performs a resource reselection operation or a first resource selection operation;

The radio resource control RRC configuration information of the terminal is updated;

The first direct link process does not use the transmission resource corresponding to the first direct link process process for N consecutive times;

The timer expires, and the timer is used to determine a time limit for the terminal to use the first carrier frequency;

The terminal receives the indication information sent by the network device, where the indication information is used to instruct the terminal to perform carrier frequency selection.
The terminal according to claim 10, wherein the transmission resource on the first carrier frequency or the transmission resource pool on the first carrier frequency does not satisfy the transmission of the transmission data corresponding to the first direct link process Requirements include one or more of the following:

The transmission resource on the first carrier frequency or the transmission resource pool channel load on the first carrier frequency is greater than the first channel congestion threshold;

The first carrier frequency does not support the data attribute of the transmission data corresponding to the direct link process, where the data attribute is subcarrier frequency interval information, transmission time interval information, reliability information, service type information, and priority information. At least one of them.
The terminal according to claim 10, wherein the transmission resource corresponding to the first direct link process does not satisfy the transmission requirement of the transmission data corresponding to the first direct link process, and includes one or more of the following: item:

The transmission resource corresponding to the first direct link process cannot transmit the transmission data corresponding to the first direct link process;

The transmission resource corresponding to the first direct link process does not support the data attribute of the transmission data corresponding to the first direct link process, and the data attribute is subcarrier frequency interval information, transmission time interval information, and reliability. At least one of information, service type information, and priority information.
The terminal according to any one of claims 8 to 12, wherein the processing module is specifically configured to suspend, clear, revoke, initialize or reset the first direct link process.
The terminal according to any one of claims 5 to 12, wherein the processing module is specifically configured to perform one or more of the following:

Clearing configuration information corresponding to the first direct link process;

Clearing an authorization configuration corresponding to the first direct link process;

Resetting or initializing the counter;

Clearing the buffer data of the first through link process;

It is determined that the transmission resource corresponding to the first through link process is no longer valid.
A terminal, comprising:

One or more processors, the processor performing the following steps:

The first direct link process of the terminal triggers selection of at least one second carrier frequency, the first direct link process belongs to a first HARQ entity of the terminal, and the first HARQ entity and the first carrier frequency Association

When the second carrier frequency and the first carrier frequency are different carrier frequencies, stopping the first direct link process.
A computer readable storage medium comprising instructions for performing the method of any one of claims 1 to 7 when the instructions are run on a computer.
A computer program product comprising instructions for performing the method of any one of claims 1 to 7 when the computer program product is run on a computer.