A communication control method, device and computer readable storage medium

Abstract

A communication control method, device and computer readable storage medium, the communication control method comprising: a first user equipment receiving sidelink measurement configuration information, the sidelink measurement configuration information comprising measurement configuration information of a sidelink of a user equipment supporting sidelink carrier aggregation; the first user equipment performing sidelink measurement. Another communication control method comprising: a first user equipment receiving sidelink activation state indication information, the sidelink activation state indication information being used to indicate an activation or deactivation state of a sidelink of a sidelink carrier aggregation user equipment; the first user equipment activating or deactivating the sidelink. The communication control method provided in the application realizes control of a carrier aggregation sidelink.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically, to a communication control method, apparatus, and computer-readable storage medium. Background Technology

[0002] With the development of communication technology and the enrichment of demands, the application scenarios of wireless communication are becoming increasingly widespread, among which vehicle networking (V2X) is a typical example. V2X allows vehicles to participate in wireless communication, utilizing advanced cellular communication technology to achieve real-time information exchange between vehicles, between vehicles and pedestrians, and between vehicles and roadside infrastructure. This enables them to share their current status (including vehicle location, speed, acceleration, and driving path) and road environment information, collaboratively perceive road hazards, and provide timely collision warnings to prevent road traffic accidents. V2X communication modes are specifically divided into three categories: vehicle-to-vehicle communications (V2V), vehicle-to-infrastructure communications (V2I / V2N), and vehicle-to-pedestrian communications (V2P). Figure 1 As shown, these three types can also be collectively referred to as Vehicle-to-Everything (V2X) communication.

[0003] Existing technologies already support the use of cellular wireless communication for vehicle-to-everything (V2X) applications. In V2V / V2P / V2I V2X communication modes, the transmission of V2X information is primarily via broadcast and multicast. Existing system base stations support broadcast mechanisms based on MBSFN (Multicast Broadcast Single Frequency Network) and SC-PTM (Single Cell Point To Multiploint). Furthermore, UE-to-UE direct discovery / communication (D2D / ProSe / sidelink direct discovery / communication) mechanisms can also be used to support V2X message transmission via sidelinks. Enhanced eV2X communication presents higher performance requirements in terms of latency, reliability, and data transmission rate to support V2X applications such as vehicle platooning, remote driving, and sensor applications. For example, data rates in eV2X application scenarios vary between 0.5Mbps and 1Gbps. For V2X communication via the PC5 interface, existing technologies cannot yet meet the higher data rate requirements of eV2X scenarios. Summary of the Invention

[0004] At least one embodiment of the present invention provides a communication control method, apparatus and computer-readable storage medium to meet the high data rate requirements in device-to-device communication scenarios.

[0005] To achieve the objective of this invention, at least one embodiment of this invention provides a communication control method, comprising:

[0006] The first user equipment receives sidelink measurement configuration information, which includes measurement configuration information of the sidelink links of user equipment that support sidelink carrier aggregation;

[0007] The first user equipment performs a sidechain measurement.

[0008] In an optional embodiment, the first user equipment receiving sidelink measurement configuration information includes:

[0009] The first user equipment receives the sidelink measurement configuration information sent by the second user equipment;

[0010] Alternatively, the first user equipment receives the sidelink measurement configuration information sent by the base station.

[0011] In one alternative embodiment, the sidechain measurement configuration information includes at least one of the following:

[0012] Measurement object information, measurement reporting configuration information, measurement identifier, measurement quantity information, measurement gap configuration information, and sidelink update criteria.

[0013] In one optional embodiment, the measurement object information includes at least one of the following: the measurement object user equipment identifier, the aggregated sidechain carrier frequency information between the measurement object user equipment, other sidechain carrier frequency information supported by the measurement object user equipment, the synchronization resources and / or synchronization sequences corresponding to the sidechain carrier frequencies, the dedicated resources for sidechain control information, and the measurement identifier dedicated to sidechain measurement.

[0014] In one optional embodiment, the measurement reporting configuration information includes at least one of the following:

[0015] Report trigger type indication information, report the identifier information of the trigger event, report the relevant threshold information of the trigger event, report the relevant offset information of the trigger event, hysteresis parameter information, trigger duration, reporting purpose information, trigger measurement information, report measurement information, maximum number of sidelinks to report, reporting interval, reporting quantity, and report simplified measurement result indication.

[0016] In an optional embodiment, the reporting destination information is used to indicate the reporting of sidelink carrier aggregation measurement results information;

[0017] The measurement information, trigger measurement information, and report measurement information include at least one of the following: sidelink discovery channel reference signal received power, sidelink discovery channel reference signal received quality, sidelink synchronization channel reference signal received power, sidelink synchronization channel reference signal received quality, sidelink communication control channel reference signal received power, sidelink communication control channel reference signal received quality, sidelink communication data channel reference signal received power, sidelink communication data channel reference signal received quality, and sidelink received signal strength indication.

[0018] The instruction to report simplified measurement results is used to indicate whether or not to report simplified measurement results.

[0019] In an optional embodiment, the sidelink update criterion includes a triggering event, which indicates that when any of the triggering events is met, the first user equipment sends sidelink update information to the second user equipment.

[0020] In one alternative embodiment, the triggering event includes at least one of the following:

[0021] First sidechain trigger event: The measurement value of the main sidechain link is lower than the first threshold value;

[0022] Second sidechain trigger event: The measurement value of the main sidechain link is lower than the second threshold and the measurement value of the auxiliary sidechain link is higher than the third threshold;

[0023] Third sidechain trigger event: The measurement value of the auxiliary sidechain link is lower than the fourth threshold value;

[0024] Fourth sidechain trigger event: The sidechain measurement value on other sidechain frequency points supported by the user equipment being measured is higher than the fifth threshold value;

[0025] Fifth sidechain trigger event: The sidechain measurement value on other sidechain frequency points supported by the user equipment being measured is higher than the first offset of the main sidechain link;

[0026] Sixth sidelink trigger event: The sidelink measurement value on other sidelink frequency points supported by the user equipment being measured is higher than the second offset of the auxiliary sidelink link;

[0027] Seventh sidelink trigger event: The service sidelink link measurement value is lower than the sixth threshold value.

[0028] In an optional embodiment, before the first user equipment receives the sidelink measurement configuration information, it further includes:

[0029] The first user equipment sends the supported sidelink frequency information to the second user equipment; or, the first user equipment sends the supported sidelink frequency information to the base station.

[0030] In an alternative embodiment, the first user equipment performing sidechain measurements includes at least one of the following:

[0031] Measurements of sidelink discovery signals, sidelink synchronization signals, sidelink communication signals, and measurement signals specifically designed for sidelink carrier frequency measurements.

[0032] In an alternative embodiment, before the first user equipment performs a sidelink discovery signal measurement, it further includes:

[0033] The first user equipment's sidelink inbound layer triggers the non-access layer / higher layer to send a sidelink discovery request message on the corresponding sidelink carrier frequency and receives a sidelink discovery response message sent on the corresponding sidelink carrier frequency; or

[0034] The first user equipment receives sidelink discovery information sent by the second user equipment's sidelink inbound layer triggering the non-access layer / higher layer on the corresponding sidelink carrier frequency.

[0035] In an alternative embodiment, before or after the first user equipment performs a sidelink discovery signal measurement, the method further includes:

[0036] The first user equipment receives a sidelink communication resource corresponding to the sidelink discovery resource sent by the second user equipment, wherein the sidelink discovery resource and the sidelink communication resource may be on different sidelink carrier frequencies; or

[0037] The first user equipment receives the sidelink communication resources configured by the base station that correspond to the sidelink discovery resources.

[0038] In an alternative embodiment, before the first user equipment performs a measurement of the sidelink synchronization signal, it includes:

[0039] The first user equipment receives synchronization resources and / or synchronization sequences for sidelink carrier frequency measurement sent by the second user equipment or the base station;

[0040] Alternatively, the first user equipment may receive sidelink carrier aggregation resource configuration information sent by the second user equipment or the base station, wherein the sidelink carrier aggregation resource configuration information includes at least one of the following: sidelink synchronization signal transmission indication, synchronization signal resource offset, synchronization sequence identifier, synchronization signal transmission duration, and synchronization signal transmission period.

[0041] In an alternative embodiment, before the first user equipment performs sidelink communication measurements, it further includes:

[0042] The first user equipment receives sidelink control information for sidelink carrier frequency measurement sent by the second user equipment. The sidelink control information carries a node pair identifier between the first user equipment and the second user equipment, and / or a measurement identifier specifically used for sidelink measurement; or,

[0043] The first user equipment receives sidelink control information for sidelink carrier frequency measurement sent by the second user equipment through dedicated resources; or,

[0044] The first user equipment receives sidelink control information and data sent by the second user equipment for sidelink carrier frequency measurement, carrying instructions from the media access control and control unit for sidelink measurement.

[0045] In an alternative embodiment, the first user equipment performing sidechain measurements includes at least one of the following:

[0046] For a sidelink carrier frequency that has been configured for sidelink carrier aggregation, measure the sidelink communication on that sidelink carrier frequency.

[0047] For other sidechain carrier frequencies not configured for sidechain carrier aggregation, perform sidechain discovery on that sidechain carrier frequency and measure the sidechain discovery signal.

[0048] In an optional embodiment, after the first user equipment performs the sidechain measurement, it further includes:

[0049] The first user equipment sends a sidelink measurement result report to the second user equipment;

[0050] Alternatively, the first user equipment may send a sidelink measurement result report to the base station;

[0051] Alternatively, the first user equipment may send sidelink update information to the second user equipment.

[0052] In an optional embodiment, the sidechain measurement result report includes at least one of the following:

[0053] Measurement identification information, user equipment identifier of the measurement object, sidelink index, frequency point of the sidelink, sidelink measurement result information, sidelink measurement result information on other sidelink frequencies supported by the user equipment of the measurement object, and simplified measurement results.

[0054] The sidelink measurement results include at least one of the following:

[0055] Sidelink discovery channel reference signal received power measurement, sidelink discovery channel reference signal received quality measurement, sidelink synchronization channel reference signal received power measurement, sidelink synchronization channel reference signal received quality measurement, sidelink communication control channel reference signal received quality measurement, sidelink communication control channel reference signal received quality measurement, sidelink communication data channel reference signal received power measurement, sidelink communication data channel reference signal received quality measurement, sidelink received signal strength indication measurement.

[0056] In an optional embodiment, the simplified measurement results include:

[0057] Sidelink carrier frequency information;

[0058] The indication information corresponding to the sidelink carrier frequency is used to indicate the addition / release of the sidelink link on the corresponding sidelink carrier frequency.

[0059] In an optional embodiment, after the first user equipment sends the sidelink measurement result report to the second user equipment, the method further includes:

[0060] The first user equipment receives the sidelink update information sent by the second user equipment.

[0061] In an optional embodiment, after the first user equipment sends a sidelink measurement result report to the base station, it further includes:

[0062] The first user equipment receives the sidelink update information sent by the base station;

[0063] The first user equipment sends sidelink update information to the second user equipment.

[0064] In an optional embodiment, the sidelink update information is sidelink link addition / modification / release information, auxiliary sidelink link addition / modification / release information, or main sidelink link replacement information.

[0065] In an optional embodiment, the sidelink update information is sidelink link addition / modification or auxiliary sidelink link addition / modification information, including at least one of the following: first user equipment identification information, second user equipment identification information, frequency point of auxiliary sidelink link or the auxiliary sidelink link, index of auxiliary sidelink link or the auxiliary sidelink link, synchronization information of auxiliary sidelink link or the auxiliary sidelink link, and resource pool information of auxiliary sidelink link or the auxiliary sidelink link.

[0066] In an optional embodiment, the sidelink update information is sidelink release information or auxiliary sidelink release information, including at least one of the following: first user equipment identification information, second user equipment identification information, index of the released sidelink or auxiliary sidelink, frequency point of the sidelink or auxiliary sidelink, and reason for release.

[0067] In one optional embodiment, the sidelink update information is the main sidelink link replacement information, including at least one of the following: first user equipment identification information, second user equipment identification information, the frequency point of the target main sidelink link, the synchronization information of the target main sidelink link, and the resource pool information of the target main sidelink link.

[0068] In an optional embodiment, when the sidelink update information is sidelink link addition / modification information or auxiliary sidelink link addition / modification information, after the first user equipment receives the sidelink update information sent by the second user equipment, it further includes:

[0069] The first user equipment updates the sidelink carrier aggregation information and sends a sidelink link addition / modification confirmation message or a secondary sidelink link addition / modification confirmation message to the second user equipment; or...

[0070] The first user equipment updates the sidelink carrier aggregation information and establishes a direct sidelink communication connection with the second user equipment on the frequency point where the added sidelink or auxiliary sidelink is located.

[0071] In an optional embodiment, when the sidelink update information is primary sidelink link replacement information, after the first user equipment receives the sidelink update information, it further includes:

[0072] The first user equipment releases the main sidelink and all auxiliary sidelinks;

[0073] The first user equipment and the second user equipment establish a direct communication connection on the sidelink or a new main-sidelink link at the frequency point where the target main-sidelink link is replaced.

[0074] An embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, implements the above-described communication control method.

[0075] One embodiment of the present invention provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the above-described communication control method.

[0076] An embodiment of the present invention provides a communication control method, comprising:

[0077] The first user equipment receives sidelink activation status indication information, which is used to indicate the activation or deactivation status of the sidelink link of the sidelink carrier aggregation user equipment.

[0078] The first user equipment activates or deactivates the sidelink.

[0079] In an optional embodiment, the first user equipment receives sidechain activation status indication information, including:

[0080] The first user equipment receives the sidechain activation status indication information sent by the second user equipment;

[0081] Alternatively, the first user equipment receives the sidelink activation status indication information sent by the base station.

[0082] In an optional embodiment, the sidelink activation status indication information sent by the base station and received by the first user equipment includes the activation / deactivation status of the sidelink link between the first user equipment and one or more target user equipments.

[0083] In an optional embodiment, after the first user equipment receives the sidelink activation status indication information sent by the base station, it further includes:

[0084] The first user equipment sends a sidelink activation status indication message to the target user equipment, carrying the activation / deactivation status of the sidelink link between the first user equipment and the target user equipment.

[0085] In an optional embodiment, the sidelink activation status indication information received by the first user equipment from the base station is carried by the sidelink activation / deactivation media access control unit of the downlink transmission channel.

[0086] In an optional embodiment, the sidechain activation status indication information includes one or more status indication fields, each of the status indication fields including:

[0087] The target user equipment identifier subfield is used to carry the target user equipment identifier;

[0088] The activation status indication subfield is used to indicate the activation / deactivation status of the sidelink links between the first user equipment and the target user equipment, and the activation / deactivation status of each sidelink link between the first user equipment and the target user equipment is indicated by one bit.

[0089] In an optional embodiment, before the first user equipment receives the sidelink activation status indication information sent by the base station, it further includes:

[0090] The first user equipment sends sidelink assistance information to the base station;

[0091] The sidechain auxiliary information includes at least one of the following:

[0092] The amount of data to be transmitted, data rate requirements, latency requirements, current active sidelink communication link resource load status, power saving requirements, and power level indication.

[0093] In one optional embodiment, when the sidelink activation status indication information is transmitted between user equipments, the sidelink activation status indication information is carried by sidelink control signaling; or, it is carried by the sidelink activation / deactivation media access control unit in the sidelink transmission channel.

[0094] In an optional embodiment, when the sidechain activation status indication information is carried by the sidechain control signaling, the sidechain activation status indication information includes:

[0095] List / index of active sidechain links;

[0096] Alternatively, deactivate the list / index of sidechain links;

[0097] Alternatively, the list / index of active sidechain links and the list / index of deactivated sidechain links;

[0098] Alternatively, a bit mapping table indicating the active / deactivated state of each sidelink.

[0099] In an optional embodiment, when the sidelink activation status indication information is carried by the sidelink activation / deactivation media access control unit in the sidelink transmission channel, the activation / deactivation status of each sidelink link is indicated using one bit of the sidelink activation / deactivation media access control unit.

[0100] In an optional embodiment, the method further includes:

[0101] The first user equipment maintains a deactivation timer for each activated sidelink;

[0102] If no data is sent or received on the side link during the deactivation timer's timeout period, the side link is deactivated after the deactivation timer's timeout period expires.

[0103] If data is sent or received on the side link during the deactivation timer's timing period, the deactivation timer is started or restarted.

[0104] In one optional embodiment, the timing of the deactivation timer is obtained by the first user equipment from pre-configuration information, or from sidelink carrier configuration information sent by the second user equipment, or from radio resource control proprietary signaling containing the timing configuration of the deactivation timer sent by the base station.

[0105] In one optional embodiment, the timing period of the deactivation timer is dedicated to the user equipment or dedicated to the user equipment pair, wherein the two user equipments with a sidelink are referred to as a user equipment pair.

[0106] In one alternative embodiment, the deactivation timer time is incremented or decremented in units of subframes with sidelink resources.

[0107] In an optional embodiment, the method further includes:

[0108] When the sidelink is active, the first user equipment can perform Layer 1 measurement, sidelink quality measurement, and data transmission on the sidelink.

[0109] When the sidelink is in a deactivated state, the first user equipment is supported in performing sidelink quality measurement on the sidelink.

[0110] An embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, implements the above-described communication control method.

[0111] One embodiment of the present invention provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the above-described communication control method.

[0112] An embodiment of the present invention provides a communication control method, comprising:

[0113] The first user equipment sends a sidelink activation status indication message to the second user equipment. The sidelink activation status indication message is used to indicate the activation or deactivation status of the sidelink link of the sidelink carrier aggregation user equipment.

[0114] The first user equipment activates or deactivates the sidelink.

[0115] In an optional embodiment, before the first user equipment sends the sidechain activation status indication information to the second user equipment, it further includes:

[0116] The first user equipment receives sidelink assistance information sent by the second user equipment;

[0117] The sidechain auxiliary information includes at least one of the following:

[0118] The amount of data to be transmitted, data rate requirements, latency requirements, current active sidelink communication link resource load status, power saving requirements, and power level indication.

[0119] An embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, implements the above-described communication control method.

[0120] The proposed solution allows configuration of the activation / deactivation status of one or more sidelink links between UEs; it also allows measurement of multiple sidelink links between UEs and sidelink links on available sidelink carrier frequencies of UEs, and the addition / modification / replacement / release of sidelink links between UEs based on the measurement results. Using the solution provided in this application, carrier aggregation sidelink links can be effectively maintained and dynamically updated, resulting in more complete carrier aggregation sidelink communication and contributing to improving the data transmission rate of V2X communication via the sidelink interface.

[0121] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0122] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0123] Figure 1 This is a schematic diagram of the V2X communication mode in related technologies;

[0124] Figure 2 This is a schematic diagram of V2X sidelink communication under sidelink carrier aggregation;

[0125] Figure 3This is a flowchart of a communication control method provided in an embodiment of the present invention;

[0126] Figure 4 This is a flowchart of a communication control method provided in an embodiment of the present invention;

[0127] Figure 5 This is a schematic diagram of activating / deactivating the MAC CE format according to Embodiment 1 of the present invention;

[0128] Figure 6 This is a flowchart of the SLink activation / deactivation process in Embodiment 2 of the present invention;

[0129] Figure 7 This is the SLSlink activation / deactivation flowchart of Embodiment 3 of the present invention;

[0130] Figure 8 This is a schematic diagram of activating / deactivating the MAC CE format according to Embodiment 3 of the present invention;

[0131] Figure 9 This is a flowchart of the UE autonomous sidelink measurement configuration negotiation process in Embodiment 5 of the present invention;

[0132] Figure 10 This is a flowchart of UE autonomous sidelink measurement configuration and sidelink link update in Embodiment 6 of the present invention;

[0133] Figure 11 This is a flowchart of sidelink measurement configuration and reporting, and auxiliary configuration of sidelink link update in Embodiment 7 of the present invention;

[0134] Figure 12 This is a flowchart of the sidelink measurement configuration and sidelink addition / modification / release method of the sidelink link in Embodiment 8 of the present invention. Detailed Implementation

[0135] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0136] The steps illustrated in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in a different order than that presented here.

[0137] In LTE (Long Term Evolution), carrier aggregation is used to improve data rates and system capacity. With carrier aggregation configured, a UE can simultaneously transmit and receive data with multiple cells. To improve the data transmission rate of sidelink (SL) V2X communication, one solution is to configure a set of sidelink carrier frequencies for the UE. The UE simultaneously transmits / receives data on multiple sidelink carrier frequencies; that is, UEs use sidelink links on different sidelink carrier frequencies for V2X communication. In this case, a crucial issue is how to maintain and update the sidelink links on the multiple aggregated sidelink carrier frequencies between UEs.

[0138] Sidelink carrier aggregation is a direct and effective method to improve the V2X communication data rate of a UE on a sidelink. For example... Figure 2 As shown, f1, f2, f3, and f4 are sidelink carrier frequencies (which provide sidelink resources and support V2X sidelink discovery / communication). UE1 camps on carrier frequency f2 and is also within the range of carrier frequencies f1 and f4; UE2 camps on carrier frequency f3 and is also within the range of carrier frequencies f1 and f4; UE3 camps on carrier frequency f2 and is also within the range of carrier frequency f1. UE1 and UE2 can perform V2X sidelink communication on carrier frequencies f1 and f4 through sidelink carrier aggregation; UE1 and UE3 can perform V2X sidelink communication on carrier frequencies f2 and f1 through sidelink carrier aggregation. Taking V2X sidelink communication between UE1 and UE3 via sidelink carrier aggregation as an example, assuming that the sidelink link established on f1 is the primary sidelink link (Sidelink Primary Link, abbreviated as SL Plink), and other carrier frequency sidelink links added through SLPlink are secondary sidelink links (Sidelink Secondary Link, abbreviated as SL Slink). The SL Plink and all SL Slinks between UE1 and UE3 serve as its sidelink communication links. In other implementations, the sidelink links on all sidelink carriers between UE1 and UE3 can also be peer links, that is, the sidelink communication link on f1 and the sidelink link on f2 are two equal sidelink links, referred to as peer sidelink links.

[0139] To better manage battery consumption of UEs configured with sidelink carrier aggregation, the activation and deactivation states of SL Slink or sidelink links between communicating UE pairs can be configured. For UEs in RRC (Radio Resource Control) connected state, the eNB (evoled NodeB) can simultaneously configure SL Slink or sidelink link activation / deactivation for both the source and target UE pairs. For UEs without E-UTRAN (Evolved Universal Terrestrial Radio Access Network) coverage, the UE can autonomously initiate SL Slink or sidelink link activation / deactivation to the peer UE (this also applies to RRC connected state UEs). Furthermore, the UE's MAC (Media Access Control) entity maintains a deactivation timer for each activated sidelink link (which can be an SL Slink or a peer sidelink link). If the UE pair does not transmit or receive data on that sidelink link within the deactivation timer's duration, the sidelink link will be deactivated. For an active sidelink, the UE can perform Layer 1 measurements (channel quality indication / precoding matrix index / yield indication / precoding type indication / channel state information reference signal resource indication, sidelink quality measurement, and data transmission on SL Slink or peer-to-peer sidelinks) on the corresponding carrier frequency. For a deactivated sidelink, the UE can only perform sidelink quality measurements on the corresponding carrier frequency.

[0140] For UEs configured with sidelink carrier aggregation, the channel environment of the SL Plink and one or more SLSlinks or multiple peer sidelinks between the source and target UEs will change. Both the source and target UEs need to measure the quality of all their serving sidelinks, as well as the other sidelink frequencies supported by the peer UE (excluding the frequency of the serving sidelink). Based on the measurement results, a decision is made regarding whether to update the sidelink. Sidelink measurements can be performed in three ways: measuring the sidelink discovery signal, measuring the sidelink synchronization signal, and measuring sidelink communication. If the quality of a sidelink deteriorates, it can be released. If the quality of a sidelink at another sidelink frequency (not the frequency of the serving sidelink) is good, it can be considered for addition to the sidelinks in the sidelink carrier aggregation. If the SL Plink quality deteriorates, the SLSlink can also be replaced based on the measurement results. In general, there are two methods for configuring sidelink carrier aggregation measurement and replacing / releasing SL Plink or SL Slink or sidelink links: one is based on eNB-assisted SL Plink replacement or SL Slink replacement / releasing or sidelink link replacement / releasing, with the eNB performing the sidelink carrier aggregation measurement configuration; the other is for UEs to negotiate multiple sidelink link measurements and update / release conditions.

[0141] The following examples illustrate specific methods for activating / deactivating sidelinks between communicating UE pairs, as well as the signaling procedures related to sidelink carrier aggregation measurement configuration and sidelink link updates. It should be noted that the UEs described in this application are all UEs supporting vehicular network (V2N) communication, including but not limited to vehicle UEs, pedestrian UEs (UEs held by pedestrians), and UE-type roadside units. These V2N UEs have sidelink carrier aggregation capabilities. Furthermore, the methods proposed in this application are not limited to V2N communication but are also applicable to other device-to-device (D2D) communication applications, specifically UEs with sidelink carrier aggregation capabilities that support D2D functionality. Sidelink communication includes V2N sidelink communication and / or ordinary D2D sidelink communication. The base station mentioned in this application can be an eNB or other types of base stations.

[0142] At least one embodiment of the present invention provides a communication control method, such as... Figure 3 As shown, it includes:

[0143] Step S301: The first UE receives sidelink measurement configuration information, which includes measurement configuration information of the sidelink links of user equipment that support sidelink carrier aggregation.

[0144] Step S302, the first UE performs a sidelink measurement.

[0145] The first UE performing sidelink measurement includes: the first UE performing sidelink link measurement according to the sidelink measurement configuration information.

[0146] In an optional embodiment, the first UE receiving sidelink measurement configuration information includes:

[0147] The first UE receives the sidelink measurement configuration information sent by the second UE; or

[0148] The first UE receives the sidelink measurement configuration information sent by the eNB.

[0149] In an optional embodiment, the first UE and the second UE are either UEs with sidechain carrier aggregation capability that support vehicle-to-everything (V2X) communication, or UEs with sidechain carrier aggregation capability that support device-to-device (D2D) communication.

[0150] The first UE and the second UE, which have sidelink carrier aggregation capability, support multiple sidelink links on multiple sidelink aggregated carriers.

[0151] The multiple sidelinks on the sidelink aggregation carrier include:

[0152] One primary sidelink (SL Plink) and one or more secondary sidelinks (SL Slink);

[0153] Alternatively, multiple peer-to-peer sidelinks;

[0154] Among them, the primary sidelink (SL Plink) and all secondary sidelinks (SL Slink) are collectively referred to as serving sidelinks.

[0155] All peer-to-peer sidelinks are collectively referred to as service sidelinks.

[0156] In one alternative embodiment, the sidelink measurement configuration information includes at least one of the following:

[0157] Measurement information, used to indicate the parameters that need to be measured; measurement object information, used to indicate the relevant information of the measurement object that needs to be measured; measurement reporting configuration information; measurement identifier; measurement gap configuration information; sidelink update criteria, used to indicate the criteria for performing sidelink link updates.

[0158] In one alternative embodiment, the measurement information includes at least one of the following:

[0159] The sidelink discovery channel's Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), RSRP of the sidelink communication control channel, RSRQ of the sidelink communication control channel, RSRP of the sidelink communication data channel, RSRQ of the sidelink communication data channel, RSRP of the sidelink synchronization channel, RSRQ of the sidelink synchronization channel, and sidelink received signal strength indication.

[0160] In one alternative embodiment, the measurement object information includes at least one of the following:

[0161] The measurement target UE identifier, the aggregated sidelink carrier frequency information between the measurement target UE and the measurement target UE, other sidelink carrier frequency information supported by the measurement target UE, the synchronization resources and / or synchronization sequences corresponding to the sidelink carrier frequencies, dedicated resources for sidelink control information, and measurement identifiers dedicated to sidelink measurements.

[0162] In one embodiment, the UE identifier of the measurement object is any one of the following: ProSe (ProximityService) UE ID, ProSe layer 2 UE ID, or Cell Radio Network Temporary Identifier (C-RNTI). The sidelink carrier frequency information includes at least one of the following: frequency bandwidth, sidelink resource pool information, or sidelink synchronization information.

[0163] In one optional embodiment, the measurement reporting configuration information includes at least one of the following:

[0164] The system reports trigger type indication information, trigger event identifier information, relevant threshold information for the trigger event, relevant offset information for the trigger event, hysteresis parameter information, required trigger duration, reporting purpose information, trigger measurement information, reported measurement information, maximum number of sidelinks to report, reporting interval, reporting quantity, and simplified measurement result indication. The relevant threshold information for the trigger event refers to, for example, if the trigger event is the first sidelink trigger event: the SL Plink measurement value is lower than the first threshold value, then the relevant threshold information for the trigger event is the first threshold value. Another example is if the trigger event is the fifth sidelink trigger event: the sidelink measurement value on a sidelink frequency other than the frequency of the serving sidelink is higher than the first offset of the SL Plink, then the relevant offset information for this trigger event is the first offset.

[0165] For example, the reporting trigger type indication information includes event triggering and / or periodic triggering; wherein, event triggering is used to indicate that when a preset trigger event is met, the first user equipment reports a sidelink measurement result report; periodic triggering is used to indicate that the first user equipment periodically reports a sidelink measurement result report. The reporting period can be configured as needed. Specifically, the first user equipment can report a sidelink measurement result report to a second user equipment or a base station. Generally, when the first user equipment receives sidelink measurement configuration information from the second user equipment, it reports a sidelink measurement result report to the second user equipment; when the first user equipment receives sidelink measurement configuration information from the base station, it reports a sidelink measurement result report to the base station.

[0166] For example, the reporting purpose information is used to indicate that the UE is reporting sidelink carrier aggregation measurement results information;

[0167] For example, the simplified measurement result reporting indicator is used to indicate whether to report the simplified measurement result;

[0168] For example, the triggered measurement information is used to indicate the quantity of the event triggering condition, and the reported measurement information is used to indicate the quantity included in the measurement report. The triggered measurement information or the reported measurement information includes any one of the following: RSRP of the sidelink discovery channel, RSRQ of the sidelink discovery channel, RSRP of the sidelink communication control channel, RSRQ of the sidelink communication control channel, RSRP of the sidelink communication data channel, RSRQ of the sidelink communication data channel, RSRP of the sidelink synchronization channel, RSRQ of the sidelink synchronization channel, and sidelink received signal strength indication.

[0169] In an optional embodiment, the sidelink update criteria include triggering events to indicate that when any triggering event is met, the first UE initiates a sidelink update procedure to the second UE. The sidelink update procedure includes: an SL Slink addition / modification / release or an SL Plink replacement or a sidelink addition / modification / release procedure. Initiating the sidelink update procedure includes: the first UE sending sidelink update information to the second UE. The sidelink update information is: SL Slink addition / modification / release information, SL Plink replacement information, or sidelink addition / modification / release information.

[0170] In an optional embodiment, the triggering event (a triggering event that triggers reporting or a triggering event that includes triggering sidechain updates) includes at least one of the following:

[0171] First sidelink trigger event: SL Plink measurement value is lower than the first threshold value;

[0172] Second sidelink trigger event: SL Plink measurement value is lower than the second threshold and SL Slink measurement value is higher than the third threshold;

[0173] Third sidelink trigger event: SL Slink measurement value is lower than the fourth threshold value;

[0174] Fourth sidelink trigger event: Sidelink measurement values ​​on other sidelink frequencies supported by the UE being measured are higher than the fifth threshold value;

[0175] Fifth sidelink trigger event: The sidelink measurement value on other sidelink frequency points supported by the measured UE is higher than the first offset of SL Plink; that is, there are sidelink measurement values ​​on other sidelink frequency points that are higher than the measurement value of SL Plink by the first offset.

[0176] The sixth sidelink trigger event: The sidelink measurement value on other sidelink frequency points supported by the measured UE is higher than the second offset of SL Slink; that is, there are sidelink measurement values ​​on other sidelink frequency points that are higher than the measurement value of SL Slink by a second offset.

[0177] The seventh sidelink trigger event occurs when the service sidelink measurement value falls below the sixth threshold.

[0178] It should be noted that the above triggering events are just examples, and other triggering events can be set as needed.

[0179] The measured values ​​in each of the above-mentioned triggering events can be at least one of the following: RSRP of the sidelink discovery channel, RSRQ of the sidelink discovery channel, RSRP of the sidelink communication control channel, RSRQ of the sidelink communication control channel, RSRP of the sidelink communication data channel, RSRQ of the sidelink communication data channel, RSRP of the sidelink synchronization channel, RSRQ of the sidelink synchronization channel, and sidelink received signal strength indication. These can be indicated by the trigger measurement information in the measurement reporting configuration information.

[0180] The relevant threshold values ​​(including the first threshold value, the second threshold value, the third threshold value, the fourth threshold value, the fifth threshold value, and the sixth threshold value) and relevant offsets (including the first offset and the second offset) of each of the above-mentioned triggering events can be configured in the measurement reporting configuration information (the relevant threshold value information and the relevant offset information of the reported triggering events carried in the measurement reporting configuration information mentioned above).

[0181] For example, each triggering event can correspond to an identifier.

[0182] In an optional embodiment, before the first UE receives the sidelink measurement configuration information, the method further includes:

[0183] The first UE sends the supported sidelink frequency information to the second UE; or

[0184] The first UE sends the supported sidelink frequency information to the eNB;

[0185] The sidelink frequency information includes at least one of the following: frequency bandwidth, sidelink resource pool information, and sidelink synchronization information.

[0186] In an alternative embodiment, the first UE performing sidechain measurements includes at least one of the following:

[0187] Measurements of sidelink discovery signals, sidelink synchronization signals, sidelink communication signals, and measurement signals specifically designed for sidelink carrier frequency measurements.

[0188] In an alternative embodiment, before the first UE performs a sidelink discovery signal measurement, it includes:

[0189] The first UE's sidelink inbound layer triggers the non-access layer / higher layer to send a sidelink discovery request message on the corresponding sidelink carrier frequency and receive the sidelink discovery response message sent on the corresponding sidelink carrier frequency;

[0190] Alternatively, the first UE receives sidelink discovery information sent by the second UE on the corresponding sidelink carrier frequency by the non-access layer / higher layer triggered by the sidelink inbound layer.

[0191] In an alternative embodiment, the first UE performs a sidelink discovery signal measurement before or after:

[0192] The first UE receives the sidelink communication resources corresponding to the sidelink discovery resources sent by the second UE, wherein the sidelink discovery resources and the sidelink communication resources may be on different sidelink carrier frequencies; or

[0193] The first UE receives the sidelink communication resources configured by the base station corresponding to the sidelink discovery resources, wherein the sidelink discovery resources and the sidelink communication resources may be on different sidelink carrier frequencies.

[0194] In an alternative embodiment, before the first UE performs a sidechain synchronization signal measurement, it includes:

[0195] The first UE receives synchronization resources and / or synchronization sequences for sidelink carrier frequency measurement sent by the second UE or the base station;

[0196] Alternatively, the first UE may receive sidelink carrier aggregation resource configuration information sent by the second user equipment or base station, wherein the sidelink carrier aggregation resource configuration information includes at least one of the following: sidelink synchronization signal transmission indication, synchronization signal resource offset, synchronization sequence identifier, synchronization signal transmission duration, and synchronization signal transmission period.

[0197] In an alternative embodiment, before the first UE performs sidelink communication measurements, it includes:

[0198] The first UE receives sidelink control information for sidelink carrier frequency measurement sent by the second UE. The sidelink control information carries a node pair identifier between the first UE and the second UE and / or a measurement identifier specifically used for sidelink measurement; or,

[0199] The first UE receives sidelink control information for sidelink carrier frequency measurement sent by the second UE through dedicated resources; or,

[0200] The first UE receives sidelink control information and data for sidelink carrier frequency measurement sent by the second UE, carrying instructions from the media access control and control unit for sidelink measurement.

[0201] In an alternative embodiment, the first UE performs sidelink measurements, including at least one of the following:

[0202] For a sidelink carrier frequency that has been configured for sidelink carrier aggregation, measure the sidelink communication on that sidelink carrier frequency.

[0203] For other sidechain carrier frequencies not configured for sidechain carrier aggregation, perform sidechain discovery on that sidechain carrier frequency and measure the sidechain discovery signal.

[0204] The sidelink discovery process includes: the first UE receiving sidelink discovery advertising information sent by the second UE on the sidelink frequency point, or the first UE sending sidelink discovery request information and receiving sidelink discovery response information sent by the second UE.

[0205] In an optional embodiment, after the first UE performs the sidelink measurement, the method further includes:

[0206] The first UE sends a sidelink measurement result report to the second UE; or

[0207] The first UE sends a sidelink measurement result report to the eNB; or

[0208] The first UE sends sidelink update information to the second UE.

[0209] For example, the sidelink measurement results report includes at least one of the following:

[0210] Measurement identification information, UE identifier of the measurement object, sidelink index, frequency point of the sidelink, measurement result information of the sidelink, sidelink measurement result information on other sidelink frequencies supported by the UE, and simplified measurement results.

[0211] The measurement results of the sidelink are at least one of the following: SL Plink measurement results, sidelink measurement results, and SL Slink measurement results.

[0212] The measurement result information includes at least one of the following: RSRP measurement value of the sidelink discovery channel, RSRQ measurement value of the sidelink discovery channel, RSRP measurement value of the sidelink communication data channel, RSRQ measurement value of the sidelink communication data channel, RSRP measurement value of the sidelink communication control channel, RSRQ measurement value of the sidelink communication control channel, RSRP measurement value of the sidelink synchronization channel, RSRQ measurement value of the sidelink synchronization channel, and sidelink received signal strength indication.

[0213] The simplified measurement results include: sidelink carrier frequency information and indication information corresponding to the sidelink carrier frequency; the indication information corresponding to the sidelink carrier frequency is used to indicate the addition / release of the sidelink link on the corresponding sidelink carrier frequency.

[0214] In an optional embodiment, after the first UE sends a sidelink measurement result report to the second UE, the method further includes:

[0215] The first UE receives the sidelink update information sent by the second UE.

[0216] In an optional embodiment, after the first UE sends a sidelink measurement result report to the eNB, the method further includes:

[0217] The first UE receives the sidelink update information sent by the eNB;

[0218] The first UE sends sidelink update information to the second UE.

[0219] In an optional embodiment, after the UE sends the sidelink measurement result report to the eNB, it further includes:

[0220] The eNB sends sidelink update information to the first UE and the second UE.

[0221] In an optional embodiment, the sidelink add / modify information or SL Slink add / modify information includes at least one of the following: first UE identification information, second UE identification information, frequency point of SL Slink or sidelink, SL Slink or sidelink index, SL Slink or sidelink synchronization information, and SL Slink or sidelink resource pool information.

[0222] In an optional embodiment, the sidelink release information or SLSlink release information includes: first UE identification information, second UE identification information, the index of the released sidelink or SLSlink, the frequency of the sidelink or SLSlink, and the reason for release.

[0223] In an optional embodiment, the SL Plink replacement information includes at least one of the following: first UE identification information, second UE identification information, the frequency point of the target SL Plink, the synchronization information of the target SL Plink, and the resource pool information of the target SL Plink.

[0224] In an optional embodiment, after the first UE receives the sidelink addition / modification information or SLSlink addition / modification information sent by the second UE, the method further includes:

[0225] The first UE updates the sidelink carrier aggregation information, and the first UE sends a sidelink add / modify confirmation message or SL Slink add / modify confirmation message to the second UE; or

[0226] The first UE updates the sidelink carrier aggregation information, and the first UE and the second UE establish a direct sidelink communication connection on the frequency of the added sidelink or SLSlink.

[0227] In an optional embodiment, after the first UE receives the SL Plink replacement information sent by the second UE, it further includes:

[0228] The first UE releases SL Plink and all SL Slinks;

[0229] The first UE and the second UE establish a sidelink direct communication connection or a new SL Plink on the frequency of the target SL Plink.

[0230] At least one embodiment of the present invention provides a communication control method, comprising:

[0231] The first user equipment sends sidelink measurement configuration information to the second user equipment;

[0232] The first user equipment receives a sidelink measurement result report sent by the second user equipment; or, receives sidelink update information sent by the second user equipment.

[0233] In an optional embodiment, after the first user equipment receives the sidelink measurement result report sent by the second user equipment, it further includes:

[0234] The first user equipment sends sidelink update information to the second user equipment.

[0235] For details regarding the sidechain measurement configuration information and sidechain update information, please refer to the previous embodiment.

[0236] At least one embodiment of the present invention provides a communication control method, such as... Figure 4 As shown, it includes:

[0237] Step S401: The first UE receives sidelink activation status indication information, which is used to indicate the activation or deactivation status of the sidelink link of the sidelink carrier aggregation UE.

[0238] Step S402: The first UE activates or deactivates the sidelink.

[0239] The activation or deactivation of the sidelink by the first UE includes: the first UE activating or deactivating the sidelink according to the sidelink activation status indication information.

[0240] In an alternative embodiment, the sidelink is an SL Slink or a peer sidelink.

[0241] In an optional embodiment, the first UE receiving sidelink activation status indication information further includes:

[0242] The first UE receives the sidelink activation status indication information sent by the second UE; or

[0243] The first UE receives the sidelink activation status indication information sent by the base station.

[0244] In an optional embodiment, the first UE receives sidelink activation status indication information sent by the second UE, including:

[0245] The first UE receives sidelink activation status indication information sent by the second UE via sidelink control signaling; wherein, the sidelink activation status indication information includes:

[0246] List / index of active sidechain links;

[0247] Alternatively, deactivate the list / index of sidechain links;

[0248] Alternatively, the list / index of active sidechain links and the list / index of deactivated sidechain links;

[0249] Alternatively, a bit mapping table indicating the active / deactivated state of each sidelink.

[0250] The list / index of sidelinks can be either an SL Slink list / index or a list / index of sidelinks.

[0251] The bit mapping table indicating the activation / deactivation state of each sidelink can be either an SLSlink activation / deactivation table or a sidelink activation / deactivation table.

[0252] In an optional embodiment, the first UE receives sidelink activation status indication information sent by the second UE, and further includes:

[0253] The first UE receives sidelink activation status indication information sent by the second UE through a sidelink transmission channel (such as a sidelink shared data channel); wherein, the sidelink activation status indication information is carried by the sidelink activation / deactivation MAC control unit; in one embodiment, the sidelink activation / deactivation MAC control unit includes multiple bits, and the activation / deactivation status of a sidelink between the first UE and the second UE is indicated by one bit.

[0254] In an optional embodiment, before the first UE receives the sidelink activation status indication information sent by the second UE, the method further includes:

[0255] The second UE sends the sidelink activation status indication information according to the sidelink auxiliary information; wherein, the sidelink auxiliary information includes at least one of the following:

[0256] The amount of data to be transmitted, data rate requirements, latency requirements, current active sidelink resource load status, power saving requirements, and power level indication.

[0257] In an optional embodiment, the sidelink activation status indication information sent by the base station includes the activation / deactivation status of the sidelink link between the first UE and one or more target UEs.

[0258] The sidelink activation status indication information received by the first UE from the base station is carried by the sidelink activation / deactivation MAC control unit of the downlink transmission channel.

[0259] The sidechain activation status indication information includes one or more status indication fields, each of the status indication fields including:

[0260] The target user equipment identifier subfield is used to carry the target user equipment identifier;

[0261] The activation status indication subfield is used to indicate the activation / deactivation status of the sidelink links between the first user equipment and the target user equipment, and the activation / deactivation status of each sidelink link between the first user equipment and the target user equipment is indicated by one bit.

[0262] In an optional embodiment, after the first UE receives the sidelink activation status indication information sent by the base station, it further includes:

[0263] The first UE sends a sidelink activation status indication message to the target UE.

[0264] The first UE sends sidelink activation status indication information to the target UE, including:

[0265] The first UE sends a sidelink activation status indication message to the target UE via sidelink control signaling, carrying the activation / deactivation status of the sidelink link between the first UE and the target UE. The sidelink activation status indication message includes:

[0266] List / index of active sidechain links;

[0267] Alternatively, deactivate the list / index of sidechain links;

[0268] Alternatively, the list / index of active sidechain links and the list / index of deactivated sidechain links;

[0269] Alternatively, a bit mapping table indicating the active / deactivated state of each sidelink.

[0270] In an optional embodiment, the first UE sends sidelink activation status indication information to the target UE, and further includes:

[0271] The first UE sends sidelink activation status indication information to the target UE via a sidelink transmission channel (such as a sidelink shared data channel). This sidelink activation status indication information is carried by the sidelink activation / deactivation MAC control unit. In one embodiment, the sidelink activation / deactivation MAC control unit includes multiple bits, and the activation / deactivation status of each sidelink between the first UE and the target UE is indicated by one bit in the sidelink activation / deactivation MAC control unit.

[0272] In an optional embodiment, before the first UE receives the sidelink activation status indication information sent by the base station, the method further includes:

[0273] The first UE sends sidelink assistance information to the eNB; wherein the sidelink assistance information includes at least one of the following: the amount of data to be transmitted, data rate requirements, latency requirements, the load status of currently active sidelink link resources, power saving requirements, and power level indication.

[0274] In an optional embodiment, after the first UE receives the sidelink activation status indication information, the process includes:

[0275] The first UE maintains a deactivation timer for each active sidelink;

[0276] If no data is sent or received on the sidelink during the deactivation timer's timeout period, the sidelink will be deactivated after the deactivation timer's timeout period expires.

[0277] If data is sent or received on the sidelink during the deactivation timer's timeout period, the deactivation timer is started / restarted.

[0278] In one optional embodiment, the timing of the deactivation timer is obtained by the first UE from pre-configuration information (e.g., from system pre-configuration information), or from sidelink carrier configuration information sent by the second UE, or from RRC proprietary signaling containing the timing configuration of the deactivation timer sent by the base station.

[0279] In an optional embodiment, the timing of the deactivation timer is UE-specific or UE-pair-specific. Two user equipments with a sidelink are called a user equipment pair, meaning that the deactivation timers of the same sidelink of two UEs on the same sidelink have the same timing.

[0280] In one alternative embodiment, the deactivation timer time is incremented or decremented in units of subframes with sidelink resources.

[0281] In an optional embodiment, the activation / deactivation state of the sidelink is as follows:

[0282] When the sidelink is active, perform Layer 1 measurement, sidelink quality measurement, and data transmission on the sidelink.

[0283] When the sidelink is deactivated, the UE can perform sidelink quality measurement on the sidelink.

[0284] The Layer 1 measurement includes at least one of the following: channel quality indicator, precoding matrix index, aliasing indicator, precoding type indicator, and CSI-RS resource indicator.

[0285] Sidelink quality measurements include at least one of the following: RSRP of the sidelink discovery channel, RSRQ of the sidelink discovery channel, RSRP of the sidelink communication control channel, RSRQ of the sidelink communication control channel, RSRP of the sidelink communication data channel, RSRQ of the sidelink communication data channel, RSRP of the sidelink synchronization channel, RSRQ of the sidelink synchronization channel, and sidelink received signal strength indication.

[0286] An embodiment of the present invention provides a communication control method, comprising:

[0287] The first UE sends sidelink activation status indication information to the second UE. The sidelink activation status indication information is used to indicate the activation or deactivation status of the sidelink link of the sidelink carrier aggregation user equipment.

[0288] The first UE activates or deactivates the sidelink.

[0289] In an optional embodiment, before the first UE sends the sidechain activation status indication information to the second UE, it further includes:

[0290] The first UE receives sidelink assistance information sent by the second UE;

[0291] The sidechain auxiliary information includes at least one of the following:

[0292] The amount of data to be transmitted, data rate requirements, latency requirements, current active sidelink resource load status, power saving requirements, and power level indication.

[0293] For further details, please refer to the previous embodiment; they will not be repeated here.

[0294] The following examples, from Examples 1 to 4, illustrate several methods for activating / deactivating sidelinks between UE pairs in sidelink carrier aggregation communication.

[0295] Example 1

[0296] UE1 and UE2 are configured with sidelink carrier aggregation, and five SL Slinks are added via SL Plink, each with a corresponding link index SlinkIndex i. SL Plinks are always active, while SL Slinks are initially deactivated. UE1 and UE2 can be within or outside E-UTRAN coverage. UE1 initiates SL Slink activation / deactivation to the peer UE (UE2) via user plane. For example, the activation / deactivation status of the SL Slink is indicated through the activation / deactivation MAC control unit (activation / deactivation MAC CE) of the SL Plink's sidelink shared channel (SL-SCH). A format for one activation / deactivation MAC CE is as follows: Figure 5 As shown, this includes 7 bits (S1 to S7) and one reserved bit (R). Si (i = 1 to 7) indicates the activation / deactivation status of the SL Slink corresponding to SlinkIndexi. If a SlinkIndexi does not have a corresponding SL Slink configured, the corresponding Si is ignored. In one embodiment, Si is set to 1 to indicate activation of the SL Slink corresponding to SlinkIndexi, and Si is set to 0 to indicate deactivation of the SL Slink corresponding to SlinkIndexi. Of course, these values ​​are only examples. Other values ​​can also be used to indicate the activation / deactivation status of each SL Slink.

[0297] Optionally, the UE's MAC entity maintains a deactivation timer for each SL Slink. When data is transmitted or received on the SL Slink, the corresponding deactivation timer is started / restarted; if the UE does not transmit or receive data on the SL Slink within the deactivation timer's duration, the SL Slink will be deactivated. The deactivation timer's duration can be obtained by the UE from pre-configuration information, from sidelink carrier configuration information sent by the peer UE, or from RRC-specific signaling containing the deactivation timer's duration configuration sent by the eNB. The deactivation timer's duration is either UE-specific or UE-pair-specific. The deactivation timer's duration is the number of subframes with sidelink resources appearing on the corresponding sidelink. The deactivation timer's duration decreases or increases in units of subframes with sidelink resources. That is, taking decrement as an example, after the deactivation timer starts, for each subframe with sidelink resources appearing on the corresponding sidelink link, the deactivation timer is decremented by 1. If a subframe without sidelink resources appears, the value of the deactivation timer remains unchanged until the deactivation timer times out. The deactivation timer time is decremented in units of subframes with sidelink resources, because not every subframe necessarily has sidelink resources. For example, if the deactivation timer time is 16, assuming that there are 16 subframes with sidelink resources on the corresponding sidelink carrier frequency link (these 16 subframes are not necessarily 16 consecutive uplink subframes) without sidelink data transmission or reception, the deactivation timer times out.

[0298] It should be noted that the UE's MAC entity maintains a deactivation timer for each SL Slink, which can be combined with any other SL Slink activation / deactivation method. The following examples will not be described in detail.

[0299] In the SL Slink active state, the UE can perform Layer 1 measurements, sidelink quality measurements, and data transmission on the SL Slink; in the SL Slink deactivated state, the UE can perform sidelink quality measurements. Wherein:

[0300] Layer 1 measurements include at least one of the following: channel quality indicator, precoding matrix index, yaw indicator, precoding type indicator, and CSI-RS resource indicator;

[0301] Sidelink quality measurements include at least one of the following: RSRP of the sidelink discovery channel, RSRQ of the sidelink discovery channel, RSRP of the sidelink communication control channel, RSRQ of the sidelink communication control channel, RSRP of the sidelink communication data channel, RSRQ of the sidelink communication data channel, RSRP of the sidelink synchronization channel, RSRQ of the sidelink synchronization channel, and sidelink received signal strength indication.

[0302] Example 2

[0303] UE1 and UE2 are configured with sidelink carrier aggregation, and 5 SL Slinks have been added via SL Plink. UE1 and UE2 can be within or outside E-UTRAN coverage. UE1 or UE2 initiates SLSlink activation / deactivation to the peer UE via sidelink link control signaling.

[0304] like Figure 6 As shown, this embodiment provides an SL Slink activation / deactivation method, including:

[0305] Step 601, UE1 sends SL Slink activation status indication information to UE2.

[0306] Specifically, UE1 sends SL Slink activation status indication information to UE2 via control signaling on the SL Plink. This SL Slink activation status indication information includes a list of active SL Slinks and / or a list of deactivated SL Slinks. The active / deactivated SL Slink lists contain the index values ​​of the active / deactivated SL Slinks or the frequency information of the SL Slinks. Optionally, a one-byte bitmap indicates the activation / deactivation status of all configured SL Slinks, with each bit corresponding to the activation / deactivation status of one SL Slink, and the remaining bits filled with 0.

[0307] UE1 determines to send the sidelink activation status indication information based on factors such as the amount of data to be transmitted, data rate requirements, latency requirements, the load status of currently active sidelink resources, power saving requirements, and power level indication.

[0308] Step 602: After receiving the SLSlink activation status indication information sent by UE1, UE2 activates or deactivates the corresponding SLSlink according to the SLSlink activation status indication information. Accordingly, UE1 activates / deactivates the corresponding SLSlink.

[0309] Step 603, optionally, after UE2 activates / deactivates the corresponding SLSlink according to the instruction information, it sends SLSlink activation status confirmation information to UE1.

[0310] Example 3

[0311] UE1 and UE2 are in RRC connected state. UE1 and UE2 are configured with sidelink carrier aggregation, and the activation / deactivation of SL Slink is controlled by the eNB. Figure 7 As shown, it specifically includes:

[0312] Step 701: The eNB configures SL Slink activation status indication information to UE1;

[0313] In an optional embodiment, the eNB controls the activation / deactivation state of the SLSlink between UE1 and a target UE (UE2) through the sidelink activation / deactivation MAC control unit (sidelink activation / deactivation MAC CE) in the MAC PDU (Protocol Data Unit) of the Downlink Shared Channel (DL-SCH).

[0314] In one implementation, the sidelink activation / deactivation MAC CE format is as follows: Figure 8As shown. A UE may have one or more target UEs, therefore it is necessary to specify the activation / deactivation status of the SL Slink between the UE and each target UE. DestinationIndex i (i = 1 to N) represents the identifier index of the target UE. DestinationIndex i occupies 4 bits. Among the 8 bits S1 to S7 immediately following DestinationIndex i and the reserved bit R, Si (i = 1 to 7) represents the activation / deactivation status of the SL Slink between the UE corresponding to SlinkIndex i and the target UE indicated by DestinationIndex i. If SlinkIndex i does not have a corresponding SL Slink configured, its corresponding Si is ignored. Si set to 1 indicates that the SL Slink corresponding to SlinkIndex i is activated, and Si is 0 indicates that the SL Slink corresponding to SlinkIndex i is deactivated. Figure 8 The document also illustrates the difference between even and odd N values. When N is odd, DestinationIndex N has 5 reserved bits after S1 to S7. It should be noted that the sidelink activation / deactivation MAC CE format here is only an example; other formats can be used as needed to carry the activation / deactivation status of the UE and the target UE's sidelink.

[0315] In one implementation, before the eNB configures the SL Slink activation status indication information to the UE1, the UE1 sends sidelink auxiliary information to the eNB; wherein, the sidelink auxiliary information includes at least one of the following: the amount of data to be transmitted, the data rate requirement, the latency requirement, the load status of the currently active sidelink link resources, the power saving requirement, and the power indicator.

[0316] Step 702: After receiving the SLSlink activation status indication information configured by the eNB between UE1 and the target UE (UE2 in this embodiment), UE1 initiates SLSlink activation status indication information to the target UE (UE2). Specifically, there are two methods: user plane (refer to embodiment 1) and control plane (refer to embodiment 2), which will not be described in detail here.

[0317] Step 703: UE1 and UE2 activate / deactivate the corresponding SLSlink according to the SLSlink activation status indication information.

[0318] Step 704: After UE2 completes the corresponding SL Slink activation / deactivation, it sends SL Slink activation status confirmation information to UE1.

[0319] Step 705: After UE1 and UE2 complete SL Slink activation / deactivation, they send SL Slink activation status confirmation information to the eNB. Figure 7 The example only shows UE1 sending SL Slink activation status confirmation information to the eNB. It should be noted that in other embodiments, only either UE1 or UE2 may send SL Slink activation status confirmation information to the eNB.

[0320] In another embodiment, steps 704 and 705 may also be omitted.

[0321] Furthermore, it should be noted that in an optional embodiment of the present invention, in step 701, the eNB can simultaneously configure SL Slink activation status indication information for both the source UE and the target UE, i.e., UE1 and UE2 (the configuration method for UE2 is the same as for UE1, as described in step 701). UE1 and UE2 perform SL Slink activation / deactivation according to the eNB's configuration, and notify the eNB after completing activation / deactivation. In this way, UE1 does not need to initiate SL Slink activation / deactivation indication to UE2 via the sidelink link.

[0322] Example 4

[0323] This embodiment describes a method for activating / deactivating peer sidelink links between UE1 and UE2 communication pairs with sidelink carrier aggregation capability, where multiple carriers are aggregated.

[0324] Method 1: The eNB configures the sidelink activation / deactivation for UE1 and UE2; UE1 and UE2 are within the eNB's coverage area. For example, the eNB controls the sidelink activation / deactivation MAC control unit (sidelink activation / deactivation MAC CE) between UE1 and a target UE (UE2 in this example) through the sidelink activation / deactivation MAC CE in the MAC PDU of the downlink shared channel (DL-SCH). The format of the sidelink activation / deactivation MAC CE is similar to... Figure 8 Similarly, Si represents the activation / deactivation status of the sidelink corresponding to SidelinkIndex i. If no corresponding sidelink is configured for SidelinkIndex i, Si is ignored. Si set to 1 indicates that the sidelink corresponding to SidelinkIndex i is activated, and Si set to 0 indicates that the sidelink corresponding to SidelinkIndex i is deactivated.

[0325] Method 2: UE1 and UE2 autonomously activate / deactivate sidelinks; at least one or all sidelinks are initially active, and the activation / deactivation status of all sidelinks can be configured through any active sidelink. Specifically, as described in Example 1, the activation / deactivation MAC control unit (activation / deactivation MAC CE) of the sidelink shared channel SL-SCH indicates the activation / deactivation status of the sidelink. The activation / deactivation MAC CE format is similar to... Figure 5 Similarly, Si indicates the activation / deactivation status of the sidelink link corresponding to SidelinkIndex i. If no corresponding sidelink link is configured for SidelinkIndex i, Si is ignored. Si set to 1 indicates that the sidelink link corresponding to SidelinkIndex i is activated, and Si set to 0 indicates that the sidelink link corresponding to SidelinkIndex i is deactivated. Alternatively, as described in Embodiment 2, UE1 or UE2 initiates the activation / deactivation of the sidelink link to the peer UE through the control signaling of any activated sidelink link.

[0326] Method 3: The eNB configures the activation / deactivation of the sidelink for UE1. UE1 initiates the activation / deactivation of the sidelink to the peer UE2. At least one sidelink is initially active. The activation / deactivation status of other sidelinks can be configured through any active sidelink.

[0327] Method 4: The UE maintains a deactivation timer for each active sidelink. When data is transmitted or received on the sidelink, the corresponding deactivation timer is started / restarted; if the UE does not transmit or receive data on the sidelink within the deactivation timer's duration, the sidelink will be deactivated. The UE can obtain the deactivation timer's duration through the following methods: from pre-configuration information, from sidelink carrier configuration information sent by the peer UE, or from RRC dedicated signaling containing the deactivation timer's duration configuration sent by the eNB. The deactivation timer's duration is either UE-specific or UE-pair-specific. This method can be combined with any of Methods 1 to 3.

[0328] Examples 5 to 8 describe the measurement methods for all sidelink links of a communication UE pair with a sidelink carrier configuration, as well as the procedures for adding / modifying / releasing SL Slink, modifying / replacing SL Plink, and adding / modifying / releasing sidelink links.

[0329] Example 5

[0330] In this embodiment, UE1 and UE2 have sidelink carrier aggregation capabilities, and UE1 and UE2 have established an SL Plink. UE1 and UE2 interact to configure and execute SL measurements, and perform SL Slink addition / modification / release / SL Plink replacement based on the SL measurement results. If UE1 is a transmitting UE and UE2 is a receiving UE, UE1 initiates the SL measurement configuration. If UE1 and UE2 mutually transmit and receive data, either UE can initiate the SL measurement configuration. Figure 9 As shown, it specifically includes:

[0331] Step 901: UE1 sends sidelink measurement configuration information to UE2;

[0332] The sidelink measurement configuration information includes at least one of the following: measurement quantity information, measurement object information, measurement reporting configuration information, measurement identifier, and measurement gap configuration information;

[0333] The measurement object information includes at least one of the following: the measurement object UE identifier (i.e., UE1 identifier), some or all aggregated sidelink carrier frequency information between the measurement object UE1 and UE2, SL frequency points and / or V2X SL frequency point information supported by the measurement object UE1, synchronization resources and / or synchronization sequences corresponding to the sidelink carrier frequencies, dedicated resources for sidelink control information, and measurement identifiers dedicated to sidelink measurements; further, the measurement object UE identifier is any one of the following: ProSe UE ID, layer 2 UE ID, or cell radio network temporary identifier C-RNTI.

[0334] The measurement reporting configuration information includes at least one of the following: reporting trigger type indication information, reporting trigger event identifier information, reporting trigger event related threshold value information, reporting trigger event related offset information, hysteresis parameter information, trigger duration, reporting purpose information, trigger measurement quantity information, reported measurement quantity information, maximum number of reported sidelinks, reporting interval, reporting quantity, and reported simplified measurement results. Wherein:

[0335] The reported trigger type indication information includes event triggering and / or periodic triggering;

[0336] The reporting purpose information is used to indicate to the UE that the reported information is related to sidelink measurements;

[0337] The measurement information, triggered measurement information, and reported measurement information include at least one of the following: RSRP of the sidelink discovery channel, RSRQ of the sidelink discovery channel, RSRP of the sidelink communication control channel, RSRQ of the sidelink communication control channel, RSRP of the sidelink communication data channel, RSRQ of the sidelink communication data channel, RSRP of the sidelink synchronization channel, RSRQ of the sidelink synchronization channel, and sidelink received signal strength indication.

[0338] The triggering event includes at least one of the following:

[0339] First sidelink trigger event: SL Plink measurement value is lower than the first threshold value;

[0340] Second sidelink trigger event: SL Plink measurement value is lower than the second threshold and any SL Slink is higher than the third threshold;

[0341] Third sidelink trigger event: SL Slink measurement value is lower than the fourth threshold value;

[0342] Fourth sidelink trigger event: Sidelink measurement values ​​on other sidelink frequencies supported by the UE being measured are higher than the fifth threshold value;

[0343] Fifth sidelink trigger event: The sidelink measurement value on other sidelink frequencies supported by the UE being measured is higher than the first offset of SL Plink;

[0344] Sixth sidelink trigger event: The sidelink measurement value on other sidelink frequencies supported by the measured UE is higher than the second offset of SL Slink.

[0345] Among them, the SL Plink / SL Slink / sidelink measurement values ​​are the measurement values ​​of the measurements configured on the sidelink link.

[0346] Step 902: UE2 performs sidelink measurement based on the sidelink measurement configuration information sent by UE1 and generates a measurement result report;

[0347] Specifically, UE2 measures the sidelink quality of all serving sidelinks (SL Plink & SL Slinks) between UE1 and UE1, and measures the sidelink quality on other SL frequencies (non-serving sidelink frequency points) and / or V2X SL frequencies supported by UE1.

[0348] UE2 performs sidelink measurements including at least one of the following: sidelink discovery signal measurement, sidelink synchronization signal measurement, sidelink communication measurement, and measurement signal measurement dedicated to sidelink carrier frequency measurement.

[0349] If UE2 performs or is configured to perform a sidelink discovery signal measurement, the sidelink inbound layer of UE2 triggers the non-access layer / higher layer to send a sidelink discovery request message on the corresponding sidelink carrier frequency and receives the sidelink discovery response message sent on the corresponding sidelink carrier frequency, and measures the sidelink discovery response message; or the sidelink inbound layer of UE1 triggers the non-access layer / higher layer to send a sidelink discovery message on the corresponding sidelink carrier frequency, and UE2 receives the sidelink discovery message and measures it.

[0350] If sidelink discovery and sidelink communication use different carriers, the carrier frequency corresponding to the sidelink communication needs to be negotiated during the sidelink discovery phase, or the eNB needs to provide a mapping relationship between sidelink discovery and sidelink communication. Specifically, UE1 and UE2 negotiate the carrier frequency corresponding to the sidelink communication, and UE2 receives the sidelink communication resources corresponding to the sidelink discovery resources sent by UE1; or the eNB configures the sidelink communication resources corresponding to the sidelink discovery resources to UE1 and / or UE2.

[0351] If UE2 performs or is configured to perform sidelink synchronization signal measurement, the measurement configuration includes synchronization resources and / or synchronization sequences for UE1 and UE2 for sidelink carrier frequency measurement; or the eNB configures synchronization resources and / or synchronization sequences for UE1 and UE2 for sidelink carrier frequency measurement.

[0352] If UE2 performs or is configured to perform sidelink communication measurements, including:

[0353] UE1 and UE2 send sidelink control information for sidelink carrier frequency measurement, the sidelink control information carrying a specific identifier for the UE pair to identify the measurement; or,

[0354] The sidelink control information is transmitted using pre-configured dedicated resources for measurement and mutual identification between UE pairs;

[0355] Alternatively, the UE may send sidelink control information and data to each other for sidelink carrier frequency measurement, carrying MAC control unit instructions for sidelink measurement.

[0356] The specific identifier carried in the sidechain control information can be negotiated between UE pairs or configured by the eNB for the UE pair;

[0357] If UE2 performs or is configured to perform measurement of a measurement signal dedicated to sidechain carrier frequency measurement, then UE2 receives the dedicated measurement signal and performs the measurement.

[0358] Step 903: When the sidelink measurement reporting trigger condition configured by UE1 is met, UE2 sends the measurement result report to UE1;

[0359] Specifically, the measurement result report includes at least one of the following: measurement identification information, UE identifier (UE1 in this embodiment), SL Plink measurement result information, SL Slink index, SL Slink frequency, SL Slink measurement result information, and sidelink measurement result information on the SL frequency and / or V2X SL frequency of the non-serving sidelink supported by the UE; wherein, the SL Plink / SL Slink / sidelink measurement result information includes at least one of the following: RSRP value of the sidelink discovery channel, RSRQ value of the sidelink discovery channel, RSRP value of the sidelink communication control channel, RSRQ value of the sidelink communication control channel, RSRP value of the sidelink communication data channel, RSRQ value of the sidelink communication data channel, RSRP value of the sidelink synchronization channel, RSRQ value of the sidelink synchronization channel, and sidelink received signal strength indication.

[0360] Step 904: UE1 initiates a sidelink update process based on the measurement result report submitted by UE2. This sidelink update process can be an SL Slink addition / modification / release or an SL Plink replacement process. This embodiment uses an SL Slink addition / modification / release as an example. In this embodiment, UE1 sends SL Slink addition / modification / release information to UE2.

[0361] The SL Slink added / modified information includes at least one of the following: source UE (UE1 in this embodiment) identification information, SL Slink frequency, SL Slink index, SL Slink synchronization information, and SL Slink resource pool information.

[0362] The SL Slink release information includes: source UE (UE1 in this embodiment) identification information, the index of the released SL Slink, and the release reason.

[0363] Step 905: After receiving the SL Slink add / modify / release information, UE2 updates the sidelink carrier aggregation configuration information, performs the corresponding SL Slink add / modify / release, and sends back SL Slink add / modify confirmation information to UE1 after completing the corresponding SL Slink add / modify.

[0364] If it's an SL Slink release, UE2 will release the corresponding SL Slink-related information and configuration after receiving the SL Slink release information, without any feedback. For SL Slink additions, UE1 will initiate a sidelink connection establishment process to UE2 on the frequency of the added SL Slink.

[0365] Optionally, if in step 901, UE1 sends a sidelink measurement configuration information to UE2 indicating that a simplified measurement result should be reported, then in step 903, when the sidelink measurement reporting trigger condition configured by UE1 is met, UE2 will send the simplified measurement result to UE1.

[0366] The simplified measurement results include: sidelink carrier frequency information and indication information corresponding to the sidelink carrier frequency. The indication information corresponding to the sidelink carrier frequency is used to indicate the addition / release of the sidelink link on the corresponding sidelink carrier frequency. That is, when UE2 measures the sidelink link and meets the reporting / update trigger event, UE2 selects to report the sidelink carrier frequency / link addition (non-serving sidelink link with good quality, such as the fourth / fifth / sixth sidelink trigger event) or release (a serving sidelink link with deteriorating quality, such as the first / second / third sidelink trigger event) information that meets the conditions.

[0367] Example 6

[0368] UE1 and UE2 have sidelink carrier aggregation capabilities, and UE1 and UE2 have established an SL Plink. UE1 and UE2 interact to configure and execute SL measurements, and perform SL Slink addition / modification / release / SL Plink replacement based on the SL measurement results. If UE1 is a transmitting UE and UE2 is a receiving UE, UE1 initiates the SL measurement configuration. If UE1 and UE2 mutually transmit and receive data, either UE can initiate the SL measurement configuration. Figure 10 As shown, it specifically includes:

[0369] Step 1001: UE1 sends SL measurement configuration information to UE2. The SL measurement configuration information includes at least one of the following: measurement object information, measurement quantity information, measurement gap configuration information, and SL Plink / Slink update criteria.

[0370] The SL Plink / Slink update criteria include update trigger events, which are the same as the trigger events described in step 901 of embodiment five, and will not be repeated here; when UE2 meets any update trigger event, UE2 can initiate the corresponding SLPlink replacement / SL Slink addition / modification / release process.

[0371] For example, when UE2 meets the first and / or the fifth and / or the fourth and / or the second sidelink trigger event, UE2 can initiate the SLPlink replacement process; when UE2 meets the third and / or the sixth and / or the fourth sidelink trigger event, UE2 can initiate the SL Slink add / modify / release process.

[0372] Step 1002: UE2 performs sidelink measurement according to the sidelink measurement configuration information sent by UE1 and saves the measurement results; UE2 measures the sidelink quality of all serving SL links (SL Plink & SL Slinks) between UE2 and UE1, and measures the sidelink quality on other SL frequencies (not the frequency points where serving sidelink links are located) and / or V2X SL frequencies supported by UE1; specifically, it can measure the sidelink discovery signal, the sidelink synchronization signal, the sidelink communication, and the measurement signal dedicated to the sidelink carrier frequency measurement, as in step 902 of embodiment five, which will not be repeated here.

[0373] Step 1003: When the SL Plink / Slink update criteria configured by UE1 are met, UE2 initiates the corresponding SLPlink / Slink update process (SL Slink addition / modification / release or SL Plink replacement); in this example, SL Plink replacement is taken as an example, and UE2 sends SL Plink replacement information to UE1;

[0374] The SL Plink replacement information includes at least one of the following: source UE (UE2 in this case) identification information, the frequency point of the target SL Plink to be replaced, the synchronization information of the target SL Plink to be replaced, and the resource pool information of the target SL Plink to be replaced.

[0375] Step 1004: If an SL Plink is replaced, all SLSlinks associated with the original SL Plink need to be released before a new SL Plink is established. Therefore, in this embodiment, after receiving the SL Plink replacement information sent by UE2, UE1 releases the current SL Plink and all SL Slinks with UE2; at the same time, UE2 also releases the current SL Plink and all SL Slinks with UE1.

[0376] Step 1005: After UE1 and UE2 release the current SL Plink and all SL Slinks, they establish a direct communication connection on the new sidelink carrier frequency based on the SL Plink replacement information, that is, establish the SL Plink.

[0377] Example 7

[0378] In this embodiment, UE1 and UE2 have sidelink carrier aggregation capability, and UE1 and UE2 have established an SL Plink. UE1 is in RRC connected state. The eNB configures sidelink measurement configuration information for the UE1 and UE2 communication pair, and assists in configuring the UE1 and UE2 communication pair to perform SL Slink addition / modification / release / SL Plink replacement based on the sidelink measurement results reported by UE1. The specific signaling is as follows: Figure 11 As shown, it includes:

[0379] Step 1101: The eNB sends sidelink measurement configuration information to UE1;

[0380] The sidelink measurement configuration information is the same as described in step 901 of embodiment five, and will not be repeated here.

[0381] Step 1102: After receiving the sidelink measurement configuration information sent by the eNB, the UE1 performs sidelink measurement according to the sidelink measurement configuration information and generates a measurement result report. Specifically, it can measure the sidelink discovery signal, the sidelink synchronization signal, the sidelink communication, and the measurement signal dedicated to the sidelink carrier frequency measurement, which is the same as step 902 in embodiment 5, and will not be repeated here.

[0382] Step 1103: When the sidelink measurement reporting trigger condition configured by the eNB is met, the UE1 sends the measurement result report to the eNB;

[0383] The content of the measurement result report is the same as described in step 903 of embodiment five, and will not be repeated here.

[0384] Step 1104: The eNB configures UE1 to perform SL Slink addition / modification / release or SL Plink replacement procedures based on the measurement result report reported by UE1, and sends SL Slink addition / modification / release or SL Plink replacement information to UE1;

[0385] The SL Slink add / modify information includes at least one of the following: UE1's peer UE2 identification information, the frequency point of SL Slink, the index of SL Slink, SL Slink synchronization information, and SL Slink resource pool information.

[0386] The SL Slink release information includes: the identifier information of the peer UE2 of UE1, and the index of the released SL Slink.

[0387] The SL Plink replacement information includes at least one of the following: the peer UE2 identification information of UE1, the frequency point of the target SL Plink to be replaced, the synchronization information of the target SL Plink to be replaced, and the resource pool information of the target SL Plink to be replaced.

[0388] Step 1105: After receiving the SL Slink add / modify / release or SL Plink replace information configured by the eNB, UE1 initiates the SL Slink add / modify / release or SL Plink replace process to the peer UE (UE2 in this embodiment). For details, please refer to steps 904-905 in Example 5 or steps 1003-1005 in Example 6, which will not be repeated here.

[0389] Example 8

[0390] This embodiment describes the sidelink measurement configuration and the method for adding / modifying / releasing peer sidelinks for multiple carrier aggregation between UE1 and UE2 communication pairs with sidelink carrier aggregation capability. The specific process is as follows: Figure 12 As shown, it includes:

[0391] Step 1201: UE1 sends sidelink measurement configuration information to UE2;

[0392] Specifically, UE1 sends sidelink measurement configuration information to UE2 through any active sidelink link. The sidelink measurement configuration information includes at least one of the following: measurement object information, measurement reporting configuration information, measurement identifier, measurement quantity information, and measurement gap configuration information;

[0393] The measurement object information includes at least one of the following: the UE identifier of the measurement object (i.e., the UE1 identifier), some or all of the aggregated sidelink carrier frequency information between the measurement object and UE2, other SL frequency points and / or V2X SL frequency point information supported by the measurement object UE1, the synchronization resources and / or synchronization sequences corresponding to the sidelink carrier frequency, the dedicated resources for sidelink control information, and the measurement identifier dedicated to sidelink measurement; further, the UE identifier of the measurement target is any one of the following: ProSe UE ID, ProSe layer 2 UE ID, and the cell radio network temporary identifier C-RNTI.

[0394] The measurement reporting configuration information includes at least one of the following: reporting trigger type indication information, trigger event identifier information for reporting trigger, relevant threshold value information for the trigger event for reporting trigger, relevant offset information for the trigger event for reporting trigger, hysteresis parameter information, trigger duration, reporting purpose information, trigger measurement quantity information, reported measurement quantity information, maximum number of sidelinks to report, reporting interval, and reporting quantity.

[0395] Triggering events include at least one of the following:

[0396] First sidelink trigger event: Service sidelink measurement value falls below the first threshold value;

[0397] Second sidelink trigger event: The sidelink measurement value of other sidelink frequencies supported by UE1 is higher than the second threshold value.

[0398] Step 1202: The UE2 performs sidelink measurement according to the sidelink measurement configuration information sent by the UE1, and generates a measurement result report;

[0399] Specifically, UE2 measures the sidelink quality of the sidelink link with UE1 that aggregates some or all carriers, and measures the sidelink quality on other link SL frequency points and / or V2X SL frequency points supported by UE1 that are not sidelink aggregated carrier frequencies. Specifically, it can measure the sidelink discovery signal, the sidelink synchronization signal, the sidelink communication, and the measurement signal dedicated to the sidelink carrier frequency measurement, which is the same as step 902 in embodiment five, and will not be repeated here.

[0400] Step 1203: When the sidelink measurement reporting trigger condition configured by UE1 is met, UE2 sends the measurement result report to UE1;

[0401] Specifically, the measurement result report includes at least one of the following: measurement identification information, UE identifier of the measurement object, sidelink link index, sidelink link measurement result information, and sidelink measurement result information on other SL frequency points and / or V2X SL frequency points of the non-sidelink aggregation carrier frequency links supported by the measurement object UE; wherein, the sidelink measurement result information includes at least one of the following: RSRP value of the sidelink discovery channel, RSRQ value of the sidelink discovery channel, RSRP value of the sidelink communication control channel, RSRQ value of the sidelink communication control channel, RSRP value of the sidelink communication data channel, RSRQ value of the sidelink communication data channel, RSRP value of the sidelink synchronization channel, RSRQ value of the sidelink synchronization channel, and sidelink received signal strength indication.

[0402] Step 1204: UE1 performs the sidelink addition / modification / release procedure based on the measurement result report; UE1 sends sidelink addition / modification / release information to UE2;

[0403] In addition, the UE1 updates the sidelink carrier aggregation configuration information and performs the corresponding sidelink addition / modification / release, which can be performed before or after sending the sidelink addition / modification / release information to the UE2.

[0404] Sidelink addition / modification information includes at least one of the following: source UE (UE1 in this embodiment) identification information, the frequency point of the sidelink, the sidelink index, the sidelink synchronization information, and the sidelink resource pool information. Sidelink release information includes: source UE (UE1 in this embodiment) identification information and the index of the released sidelink.

[0405] Step 1205: After receiving the sidelink add / modify / release information, UE2 updates the sidelink carrier aggregation configuration information, executes the corresponding sidelink add / modify / release, and sends back add / modify confirmation information to UE1 after completing the corresponding sidelink add / modify. Optionally, for sidelink add, UE1 will initiate a sidelink connection establishment process to UE2 on the frequency point where the added sidelink is located.

[0406] It should be noted that the SL Slink measurement configuration and SL Slink addition / modification / release methods described in embodiments five to seven above can be applied to sidelink links. For example, the eNB can send measurement configuration information to UE1, UE1 performs the measurement, reports the measurement results, and then performs the sidelink addition / modification / release process according to the sidelink addition / modification / release information sent by the eNB.

[0407] One embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, implements the aforementioned communication control method. The communication control method may be any of the communication control methods described in the above embodiments.

[0408] One embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, and when the program is read and executed by the processor, it performs the following operations:

[0409] Receive sidelink measurement configuration information, which includes measurement configuration information of sidelink links of user equipment that support sidelink carrier aggregation;

[0410] Perform sidechain measurements.

[0411] In an optional embodiment, the receiving sidechain measurement configuration information includes:

[0412] Receive the sidelink measurement configuration information sent by the second user equipment;

[0413] Alternatively, receive the sidelink measurement configuration information sent by the base station.

[0414] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0415] Before receiving the sidelink measurement configuration information, the supported sidelink frequency information is sent to the second user equipment; or, the supported sidelink frequency information is sent to the base station.

[0416] In an alternative embodiment, the execution of sidechain measurements includes at least one of the following:

[0417] For a sidelink link or serving sidelink link that has been configured for sidelink carrier aggregation, measure the corresponding sidelink communication channel;

[0418] For sidelink frequencies not configured for sidelink carrier aggregation or other sidelink frequencies other than the frequency of the serving sidelink link, perform sidelink discovery and measure the sidelink discovery channel.

[0419] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0420] After performing sidechain measurements,

[0421] Send the sidelink measurement result report to the second user equipment;

[0422] Alternatively, send a sidelink measurement result report to the base station;

[0423] Alternatively, send sidelink update information to the second user device.

[0424] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0425] After sending the sidelink measurement result report to the second user equipment, it receives the sidelink update information sent by the second user equipment.

[0426] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0427] After sending the sidelink measurement result report to the base station, the system receives the sidelink update information sent by the base station and sends the sidelink update information to the second user equipment.

[0428] In an optional embodiment, the sidelink update information is sidelink link addition / modification / release information, auxiliary sidelink link addition / modification / release information, or main sidelink link replacement information.

[0429] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0430] When the sidelink update information is sidelink link addition / modification information or auxiliary sidelink link addition / modification information, after receiving the sidelink update information sent by the second user equipment, the sidelink carrier aggregation information is updated, and sidelink link addition / modification confirmation information or auxiliary sidelink link addition / modification confirmation information is sent to the second user equipment; or, the sidelink carrier aggregation information is updated, and a direct sidelink communication connection is established with the second user equipment on the frequency point where the added sidelink link or auxiliary sidelink link is located.

[0431] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0432] When the sidelink update information is received as a main sidelink link replacement information, the main sidelink link and all auxiliary sidelink links are released; a direct sidelink communication connection or a new main sidelink link is established with the second user equipment on the frequency point where the target main sidelink link is replaced.

[0433] An embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, performs the following operations:

[0434] Send the sidelink measurement configuration information to the second user device;

[0435] Receive a sidelink measurement result report sent by the second user equipment; or, receive sidelink update information sent by the second user equipment.

[0436] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations: after receiving the sidelink measurement result report sent by the second user equipment, it sends sidelink update information to the second user equipment.

[0437] An embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, performs the following operations:

[0438] Receive sidelink activation status indication information, which is used to indicate the activation or deactivation status of the sidelink link of the sidelink carrier aggregation user equipment.

[0439] Activate or deactivate the sidelink.

[0440] In an optional embodiment, receiving the sidechain activation status indication information includes:

[0441] Receive the sidechain activation status indication information sent by the second user equipment;

[0442] Alternatively, receive the sidechain activation status indication information sent by the base station.

[0443] In an optional embodiment, the sidelink activation status indication information sent by the base station includes the activation / deactivation status of the sidelink link between the first user equipment and one or more target user equipments.

[0444] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0445] After receiving the sidelink activation status indication information sent by the base station, the method further includes:

[0446] Send sidelink activation status indication information to the target user equipment, carrying the activation / deactivation status of the sidelink link between the first user equipment and the target user equipment.

[0447] In an optional embodiment, the sidelink activation status indication information sent by the base station is carried by the sidelink activation / deactivation media access control unit of the downlink transmission channel.

[0448] In one optional embodiment, when the sidelink activation status indication information is transmitted between user equipments, the sidelink activation status indication information is carried by sidelink control signaling; or, it is carried by the sidelink activation / deactivation media access control unit in the sidelink transmission channel.

[0449] In an optional embodiment, when the program is read and executed by the processor, it also performs the following operations:

[0450] Maintain a deactivation timer for each activated sidechain link;

[0451] If no data is sent or received on the side link during the deactivation timer's timeout period, the side link is deactivated after the deactivation timer's timeout period expires.

[0452] If data is sent or received on the side link during the deactivation timer's timing period, the deactivation timer is started or restarted.

[0453] An embodiment of the present invention provides a communication control device, including a memory and a processor. The memory stores a program, which, when read and executed by the processor, performs the following operations:

[0454] Send sidelink activation status indication information to the second user equipment. The sidelink activation status indication information is used to indicate the activation or deactivation status of the sidelink link of the sidelink carrier aggregation user equipment.

[0455] Activate or deactivate the sidelink communication link.

[0456] One embodiment of the present invention provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the above-described communication control method. The communication control method can be any of the communication control methods described in the above embodiments.

[0457] The computer-readable storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0458] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and changes to the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection of this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A communication control method, characterized in that, include: The first user equipment receives sidelink measurement configuration information, which includes measurement configuration information of the sidelink links of user equipment that support sidelink carrier aggregation; The first user equipment performs a sidechain measurement; After the first user equipment performs sidelink measurement, the method further includes: the first user equipment sending a sidelink measurement result report to the second user equipment; wherein, the sidelink measurement result report includes at least one of the following: measurement identification information, user equipment identifier of the measurement object, sidelink link index, frequency point where the sidelink link is located, sidelink link measurement result information, sidelink link measurement result information on other sidelink frequency points supported by the user equipment being measured, and simplified measurement result; the simplified measurement result includes: sidelink carrier frequency information; indication information corresponding to the sidelink carrier frequency, used to indicate the addition / release of sidelink links on the corresponding sidelink carrier frequency; After the first user equipment sends the sidelink measurement result report to the second user equipment, the process further includes: the first user equipment receiving sidelink update information sent by the second user equipment; the sidelink update information is sidelink link addition / modification information or auxiliary sidelink link addition / modification information, including at least one of the following: first user equipment identification information, second user equipment identification information, frequency point of auxiliary sidelink link or sidelink link, index of auxiliary sidelink link or sidelink link, synchronization information of auxiliary sidelink link or sidelink link, and resource pool information of auxiliary sidelink link or sidelink link. When the sidelink update information is sidelink link addition / modification information or auxiliary sidelink link addition / modification information, after the first user equipment receives the sidelink update information sent by the second user equipment, it further includes: the first user equipment updates the sidelink carrier aggregation information and establishes a direct sidelink communication connection with the second user equipment on the frequency point where the added sidelink link or auxiliary sidelink link is located.

2. The communication control method as described in claim 1, characterized in that, The first user equipment receives sidelink measurement configuration information including: The first user equipment receives the sidelink measurement configuration information sent by the second user equipment; Alternatively, the first user equipment receives the sidelink measurement configuration information sent by the base station.

3. The communication control method as described in claim 1, characterized in that, The sidechain measurement configuration information includes at least one of the following: Measurement object information, measurement reporting configuration information, measurement identifier, measurement quantity information, measurement gap configuration information, and sidelink update criteria.

4. The communication control method as described in claim 3, characterized in that, The measurement object information includes at least one of the following: the user equipment identifier of the measurement object, the aggregated sidechain carrier frequency information between the user equipment and the user equipment, other sidechain carrier frequency information supported by the user equipment, the synchronization resources and / or synchronization sequences corresponding to the sidechain carrier frequencies, dedicated resources for sidechain control information, and a measurement identifier specifically used for sidechain measurement.

5. The communication control method as described in claim 3, characterized in that, The measurement reporting configuration information includes at least one of the following: Report trigger type indication information, report the identifier information of the trigger event, report the relevant threshold information of the trigger event, report the relevant offset information of the trigger event, hysteresis parameter information, trigger duration, reporting purpose information, trigger measurement information, report measurement information, maximum number of sidelinks to report, reporting interval, reporting quantity, and report simplified measurement result indication.

6. The communication control method as described in claim 5, characterized in that, The reporting purpose information is used to indicate the reporting of sidelink carrier aggregation measurement results; The measurement information, trigger measurement information, and report measurement information include at least one of the following: sidelink discovery channel reference signal received power, sidelink discovery channel reference signal received quality, sidelink synchronization channel reference signal received power, sidelink synchronization channel reference signal received quality, sidelink communication control channel reference signal received power, sidelink communication control channel reference signal received quality, sidelink communication data channel reference signal received power, sidelink communication data channel reference signal received quality, and sidelink received signal strength indication. The instruction to report simplified measurement results is used to indicate whether or not to report simplified measurement results.

7. The communication control method as described in claim 3, characterized in that, The sidelink update criteria include triggering events, which indicate that when any of the triggering events is met, the first user equipment sends sidelink update information to the second user equipment.

8. The communication control method as described in claim 5, 6, or 7, characterized in that, The triggering event includes at least one of the following: First sidechain trigger event: The measurement value of the main sidechain link is lower than the first threshold value; Second sidechain trigger event: The measurement value of the main sidechain link is lower than the second threshold and the measurement value of the auxiliary sidechain link is higher than the third threshold; Third sidechain trigger event: The measurement value of the auxiliary sidechain link is lower than the fourth threshold value; Fourth sidechain trigger event: The sidechain measurement value on other sidechain frequency points supported by the user equipment being measured is higher than the fifth threshold value; Fifth sidechain trigger event: The sidechain measurement value on other sidechain frequency points supported by the user equipment being measured is higher than the first offset of the main sidechain link; Sixth sidelink trigger event: The sidelink measurement value on other sidelink frequency points supported by the user equipment being measured is higher than the second offset of the auxiliary sidelink link; Seventh sidelink trigger event: The service sidelink link measurement value is lower than the sixth threshold value.

9. The communication control method as described in claim 1, characterized in that, Before the first user equipment receives the sidelink measurement configuration information, it also includes: The first user equipment sends the supported sidelink frequency information to the second user equipment; or, the first user equipment sends the supported sidelink frequency information to the base station.

10. The communication control method as described in claim 1, characterized in that, The first user equipment performs sidechain measurements including at least one of the following: Measurements of sidelink discovery signals, sidelink synchronization signals, sidelink communication signals, and measurement signals specifically designed for sidelink carrier frequency measurements.

11. The communication control method as described in claim 10, characterized in that, Before the first user equipment performs the sidelink discovery signal measurement, it also includes: The first user equipment's sidelink inbound layer triggers the non-access layer / higher layer to send a sidelink discovery request on the corresponding sidelink carrier frequency and receives a sidelink discovery response sent on the corresponding sidelink carrier frequency; or, The first user equipment receives sidelink discovery information sent by the second user equipment's sidelink inbound layer triggering the non-access layer / higher layer on the corresponding sidelink carrier frequency.

12. The communication control method as described in claim 10 or 11, characterized in that, Before or after the first user equipment performs a sidelink discovery signal measurement, the method further includes: The first user equipment receives the sidelink communication resources corresponding to the sidelink discovery resources sent by the second user equipment; or The first user equipment receives the sidelink communication resources configured by the base station that correspond to the sidelink discovery resources.

13. The communication control method as described in claim 10, characterized in that, Before the first user equipment performs a measurement of the sidelink synchronization signal, the following steps are included: The first user equipment receives synchronization resources and / or synchronization sequences for sidelink carrier frequency measurement sent by the second user equipment or the base station; Alternatively, the first user equipment may receive sidelink carrier aggregation resource configuration information sent by the second user equipment or the base station, wherein the sidelink carrier aggregation resource configuration information includes at least one of the following: sidelink synchronization signal transmission indication, synchronization signal resource offset, synchronization sequence identifier, synchronization signal transmission duration, and synchronization signal transmission period.

14. The communication control method as described in claim 10, characterized in that, Before the first user equipment performs sidelink communication measurements, it also includes: The first user equipment receives sidelink control information for sidelink carrier frequency measurement sent by the second user equipment. The sidelink control information carries the node pair identifier of the first user equipment and the second user equipment and / or the measurement identifier dedicated to sidelink measurement. or, The first user equipment receives sidelink control information for sidelink carrier frequency measurement sent by the second user equipment through dedicated resources; or, The first user equipment receives sidelink control information and data sent by the second user equipment for sidelink carrier frequency measurement, carrying instructions from the media access control and control unit for sidelink measurement.

15. The communication control method as described in claim 1, characterized in that, The first user equipment performs sidechain measurements including at least one of the following: For a sidelink carrier frequency that has been configured for sidelink carrier aggregation, measure the sidelink communication on that sidelink carrier frequency. For other sidechain carrier frequencies not configured for sidechain carrier aggregation, perform sidechain discovery on that sidechain carrier frequency and measure the sidechain discovery signal.

16. The communication control method as described in claim 1, characterized in that, After the first user equipment performs the sidechain measurement, it further includes: The first user equipment sends a sidelink measurement result report to the base station; Alternatively, the first user equipment may send sidelink update information to the second user equipment.

17. The communication control method as described in claim 16, characterized in that, After the first user equipment sends the sidelink measurement result report to the base station, it also includes: The first user equipment receives the sidelink update information sent by the base station; The first user equipment sends sidelink update information to the second user equipment.

18. The communication control method as described in claim 1, 7, 16, or 17, characterized in that, The sidechain update information also includes sidechain link release information, auxiliary sidechain link release information, or main sidechain link replacement information.

19. The communication control method as described in claim 18, characterized in that, The sidelink update information is sidelink release information or auxiliary sidelink release information, including at least one of the following: first user equipment identification information, second user equipment identification information, index of the released sidelink or auxiliary sidelink, frequency point of the sidelink or auxiliary sidelink, and reason for release.

20. The communication control method as described in claim 18, characterized in that, The sidelink update information is the main sidelink link replacement information, including at least one of the following: first user equipment identification information, second user equipment identification information, the frequency point of the target main sidelink link, the synchronization information of the target main sidelink link, and the resource pool information of the target main sidelink link.

21. The communication control method as described in claim 1, characterized in that, When the sidelink update information is sidelink link addition / modification information or auxiliary sidelink link addition / modification information, after the first user equipment receives the sidelink update information sent by the second user equipment, it further includes: The first user equipment updates the sidelink carrier aggregation information and sends sidelink link addition / modification confirmation information or auxiliary sidelink link addition / modification confirmation information to the second user equipment.

22. The communication control method as described in claim 1 or 17, characterized in that, When the sidelink update information also includes primary sidelink link replacement information, after the first user equipment receives the sidelink update information, it further includes: The first user equipment releases the main sidelink and all auxiliary sidelinks; The first user equipment and the second user equipment establish a direct communication connection on the sidelink or a new main-sidelink link at the frequency point where the target main-sidelink link is replaced.

23. A communication control device, characterized in that, It includes a memory and a processor, wherein the memory stores a program that, when read and executed by the processor, implements the communication control method as described in any one of claims 1 to 22.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores one or more programs, which can be executed by one or more processors to implement the communication control method as described in any one of claims 1 to 22.

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