WO2020192277A1

WO2020192277A1 - Multi-carrier sidelink management method and terminal

Info

Publication number: WO2020192277A1
Application number: PCT/CN2020/074283
Authority: WO
Inventors: 王达; 赵亚利
Original assignee: 电信科学技术研究院有限公司
Priority date: 2019-03-28
Filing date: 2020-02-04
Publication date: 2020-10-01
Also published as: CN111757550B; CN111757550A

Abstract

Disclosed in the present application are a multi-carrier sidelink management method and a terminal, for use in solving the problem in the prior art that there is no multi-carrier link management applicable to a sidelink interface. The method comprises: a first terminal monitors a link state of each carrier of a sidelink; the first terminal performs multi-carrier sidelink management according to the link state of each carrier of the sidelink, the link state comprising normal connection or failed connection. The present application provides a multi-carrier sidelink management method, capable of being applicable to a sidelink multi-carrier property of a unicast service or a multicast service in an NR system, thereby improving the link management effect under the condition of multi-carrier of the sidelink.

Description

Multi-carrier through link management method and terminal

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on March 28, 2019, the application number is 201910245688.2, and the application name is "a multi-carrier through link management method and terminal", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of communication technology, and in particular to a method and terminal for managing a multi-carrier direct link.

Background technique

In the traditional Long Term Evolution (LTE) system, direct communication services only support broadcast services. For New Radio (NR), direct communication services will be richer than LTE, except for broadcast services. , Also supports unicast and multicast services. For broadcast and multicast services, no link connection is required, and no link management and maintenance are required. Therefore, direct communication in the LTE system does not require link management. However, for unicast services, it refers to communication between two user equipment (User Equipment, UE), a link connection needs to be established, multi-carrier transmission is also supported, and multi-carrier link connections need to be managed and maintained. For the multicast service, when a UE communicates with multiple UEs in a group, multi-carrier transmission is also supported, and multi-carrier link connections also need to be managed and maintained.

Compared with the multi-carrier link between the UE and the base station, the multi-carrier link management between the UE and the base station is divided into the main carrier and the auxiliary carrier. The multi-carrier link between the UE and the UE may not have the main carrier or the auxiliary carrier. Carriers are distinguished, and all UEs performing communication need to perform multi-carrier link management and maintenance.

Summary of the invention

The present application provides a multi-carrier direct link management method and terminal, which solves the problem of multi-carrier link management that is not suitable for direct link interfaces in the prior art.

In order to solve the above technical problems, this application provides a multi-carrier direct link management method and terminal, which specifically include:

According to the first aspect of the present application, a method for managing a multi-carrier through link is provided, where the through link is a link between a first terminal and a second terminal, and the method includes:

The first terminal monitors the link status of each carrier of the through link;

The first terminal performs multi-carrier through link management according to the link status of each carrier of the through link, and the link status includes normal connection or connection failure.

In a possible implementation manner, the first terminal performs multi-carrier direct link management according to the link status of each carrier of the direct link, including:

When the first terminal determines that the link status of the first carrier is a connection failure, and determines that the first carrier is the primary carrier, report a radio link failure statement to the upper layer of the first terminal; or

When the first terminal determines that the link status of the first carrier is connection failure, and determines that the first carrier is the secondary carrier, reselect the carrier whose link status is connection failure.

When the first terminal determines that the link statuses of all carriers are connection failures, report to the upper layer of the first terminal to send a wireless link failure statement; or

When the first terminal determines that the link status of at least one carrier is connection failure, and the link status of at least one carrier is connection normal, reselect the carrier whose link status is connection failure.

In a possible implementation manner, the first terminal monitors the link status of each carrier of the through link, including:

For each carrier, when the first terminal continuously monitors for N1 times that the quality of the direct link of the carrier is lower than the preset threshold, it starts a timer, and N1 is a preset positive integer;

When the timer reaches the preset duration, it is determined that the through link connection of the carrier fails;

The condition for stopping the timer is that the first terminal continuously monitors for N2 times that the quality of the through link of the carrier is not lower than a preset threshold, and N2 is a preset positive integer.

In a possible implementation manner, the first terminal is a receiving terminal or a transmitting terminal, and reselecting a carrier whose link status is a connection failure includes:

The first terminal reselects the carrier whose link status is the connection failure, and sends the identifier of the carrier whose link status is the connection failure and the carrier identifier after the carrier reselection to the second terminal.

In a possible implementation manner, sending the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal includes:

The first terminal sends the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal through the primary carrier; or

The first terminal sends the identity of the carrier whose link state is the connection failure and the carrier identity after carrier reselection to the second terminal through any carrier whose link state is a normal connection.

In a possible implementation manner, the first terminal is a receiving terminal, and reselecting a carrier whose link status is a connection failure includes:

The first terminal sends to the second terminal or the third terminal the identifier of the carrier whose link status is the connection failure, so that the second terminal or the third terminal performs the operation on the carrier whose connection fails. Re-election

The first terminal receives the carrier identifier after the carrier reselection sent by the second terminal or the third terminal, or the first terminal receives on all the carriers in the resource pool, thereby receiving the first terminal 2. Information sent by the terminal on the carrier after carrier reselection;

The third terminal is a control terminal, and is used to control the direct link resource between the first terminal and the second terminal.

In a possible implementation manner, the sending, by the first terminal, to the second terminal or the third terminal the identifier of the carrier whose link status is connection failure includes:

The first terminal sends the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier; or

The first terminal sends the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is the normal connection.

In a possible implementation, the receiving, by the first terminal, the carrier identifier after carrier reselection sent by the second terminal or the third terminal includes:

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through the primary carrier; or

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal.

In a possible implementation manner, the first terminal is a transmitting terminal, and reselecting a carrier whose link status is a connection failure includes:

The first terminal sends to the second terminal or the third terminal the identifier of the carrier whose link status is the connection failure, so that the second terminal or the third terminal can respond to the failure of the connection Carrier reselection;

Receiving, by the first terminal, the carrier identifier after carrier reselection sent by the second terminal or the third terminal;

According to a second aspect of the present application, a multi-carrier through link management terminal is provided. The through link is a link between a first terminal and a second terminal. The terminal includes a processor and a memory, wherein the memory uses To store a program executable by the processor, the processor is configured to read the program in the memory and execute the following process:

Monitor the link status of each carrier of the through link;

According to the link status of each carrier of the through link, multi-carrier through link management is performed, and the link status includes normal connection or connection failure.

In a possible implementation manner, the processor is specifically configured to perform multi-carrier direct link management according to the link status of each carrier of the direct link, including:

When it is determined that the link status of the first carrier is connection failure, and it is determined that the first carrier is the primary carrier, report a radio link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of the first carrier is connection failure, and it is determined that the first carrier is the secondary carrier, the carrier whose link status is connection failure is reselected.

When it is determined that the link statuses of all carriers are connection failures, report to the upper layer of the first terminal to send a wireless link failure statement; or

When it is determined that the link status of at least one carrier is connection failure, and the link status of at least one carrier is connection normal, reselect the carrier whose link status is connection failure.

In a possible implementation manner, the processor is specifically configured to monitor the link status of each carrier of the through link, including:

For each carrier, when it is continuously monitored N1 times that the quality of the direct link of the carrier is lower than the preset threshold, a timer is started, and N1 is a preset positive integer;

The condition for the timer to stop is that the quality of the direct link of the carrier is not lower than a preset threshold value, and N2 is a preset positive integer.

In a possible implementation manner, the terminal is a receiving terminal or a transmitting terminal, and the processor is specifically configured to reselect a carrier whose link status is connection failure, including:

Reselect the carrier whose link status is the connection failure, and send the identifier of the carrier whose link status is the connection failure and the carrier identifier after the carrier reselection to the second terminal.

In a possible implementation manner, the processor having the identifier of the carrier whose link status is the connection failure and the carrier identifier after the carrier reselection are sent to the second terminal, including:

Sending the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal through the primary carrier; or

Send the identity of the carrier whose link state is the connection failure and the carrier identity after carrier reselection to the second terminal through any carrier whose link state is the normal connection.

In a possible implementation manner, the terminal is a receiving terminal, and the processor is specifically configured to reselect a carrier whose link status is connection failure, including:

Sending the identifier of the carrier whose link status is the connection failure to the second terminal or the third terminal, so that the second terminal or the third terminal reselects the carrier whose connection has failed;

Receive the carrier identification after carrier reselection sent by the second terminal or the third terminal, or receive on all the carriers in the resource pool, so as to receive the second terminal on the carrier after carrier reselection Information sent;

In a possible implementation manner, the processor is specifically configured to send the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal, including:

Sending the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier; or

Send the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is the normal connection.

In a possible implementation manner, the processor is specifically configured to receive the carrier identifier after carrier reselection sent by the second terminal or the third terminal, including:

Receiving the carrier identifier after carrier reselection sent by the second terminal or the third terminal through the primary carrier; or

Receive the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal.

In a possible implementation manner, the terminal is a transmitting terminal, and the processor is specifically configured to reselect a carrier whose link status is connection failure, including:

Receiving the carrier identifier after carrier reselection sent by the second terminal or the third terminal;

In a possible implementation manner, the processor is specifically configured to receive the carrier identifier after carrier reselection sent by the second terminal, including:

Receiving the carrier identification after carrier reselection sent by the second terminal through the primary carrier; or

Receive the carrier identifier after carrier reselection sent by the second terminal through any carrier whose link status is normal.

According to a third aspect of the present application, there is provided a multi-carrier through link management device, where the through link is a link between a first terminal and a second terminal, and the device includes:

The wireless link monitoring module is used to monitor the link status of each carrier of the through link;

The multi-carrier through link management module is configured to perform multi-carrier through link management according to the link status of each carrier of the through link, where the link status includes normal connection or connection failure.

In a possible implementation manner, the multi-carrier direct link management module is specifically configured to:

When it is determined that the link status of the first carrier is a connection failure, and the first carrier is determined to be the primary carrier, report a radio link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of all carriers is connection failure, report a wireless link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of at least one carrier is connection failure, and the link status of at least one carrier is connection normal, the carrier whose link status is connection failure is reselected.

In a possible implementation manner, the wireless link monitoring module is specifically configured to:

In a possible implementation manner, the first terminal is a receiving terminal or a transmitting terminal, and the multi-carrier direct link management module is specifically configured to:

In a possible implementation manner, the first terminal is a receiving terminal, and the multi-carrier direct link management module is specifically configured to:

Sending the identifier of the carrier whose link status is a connection failure to the second terminal or the third terminal, so that the second terminal or the third terminal reselects the carrier whose connection has failed;

Receive the carrier identification after carrier reselection sent by the second terminal or the third terminal, or the first terminal above receives on all the carriers in the resource pool, thereby receiving the second terminal or the first terminal 3. Information sent by the terminal on the carrier after carrier reselection;

The third terminal is a control terminal, which is used to control the direct link resource between the first terminal and the second terminal.

In a possible implementation manner, the first terminal is a sending terminal, and the multi-carrier through link management module is specifically configured to:

According to the fourth aspect of the present application, a computer storage medium is provided, the computer storage medium stores a computer program, and the computer program implements the above-mentioned method when executed.

Compared with the prior art, the multi-carrier direct link management method provided by the present application has the following advantages and beneficial effects:

The embodiment of the application provides a multi-carrier direct link management method, which can be applied to the direct link multi-carrier characteristics of unicast service or multicast service in the NR system, thereby improving link management in the case of direct link multi-carrier effect.

Description of the drawings

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings may be obtained from these drawings without creative labor.

FIG. 1 is a schematic diagram of a communication path provided in a specific implementation manner of this application;

FIG. 2 is a schematic diagram of a multi-carrier direct link management method according to Embodiment 1 of this application;

FIG. 3 is a schematic diagram of the RLF timer timeout process provided in Embodiment 1 of this application;

FIG. 4 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 2 of this application;

FIG. 5 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 2 of this application;

FIG. 6 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 2 of this application;

FIG. 7 is a schematic diagram of interaction between a receiving UE and a controlling UE according to Embodiment 2 of this application;

FIG. 8 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 2 of this application;

FIG. 9 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 3 of this application;

FIG. 10 is a schematic diagram of interaction between a sending UE and a controlling UE according to Embodiment 3 of this application;

FIG. 11 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 3 of this application;

FIG. 12 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 3 of this application;

FIG. 13 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 3 of this application;

FIG. 14 is a schematic diagram of interaction between a receiving UE and a controlling UE according to Embodiment 2 of this application;

15 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 3 of this application;

FIG. 16 is a schematic diagram of interaction between a receiving UE and a sending UE according to Embodiment 3 of this application;

FIG. 17 is a schematic diagram of interaction between a sending UE and a controlling UE according to Embodiment 3 of this application;

18 is a schematic structural diagram of a multi-carrier direct link management terminal provided by Embodiment 4 of this application;

FIG. 19 is a schematic structural diagram of a multi-carrier direct link management device provided by Embodiment 5 of this application.

detailed description

In order to make the objectives, technical solutions, and advantages of the application more clear, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

As shown in Figure 1, devices and devices that are close to each other allow direct communication between devices. For ease of description, the direct communication interface link between devices and devices is defined as a SideLink link (device-to-device communication Link), its corresponding wireless interface is called a direct communication interface (also called a SideLink interface); the cellular communication link between the network and the direct communication device is called Uu Link (communication link between the network and the device), The corresponding interface is called Uu interface.

The direct communication devices can be all on the network or all off the network, or some devices are on the network and some devices are off the network. The network, that is, the device participating in direct communication is located within the coverage of the 3GPP base station communication carrier, and the offline, that is, the device participating in the direct communication is not within the coverage area of the 3GPP base station communication carrier.

Typical direct communication scenarios include the following three types:

(1) One-to-one communication (unicast) between direct communication terminals;

(2) A device can send the same data to all devices in a communication group at a time (multicast);

(3) A device can send the same data (broadcast) to all nearby devices at one time.

In the unicast service scenario of the direct communication interface of the NR system, the establishment of a radio resource control (Radio Resource Control, RRC) connection between two UEs is supported, and the management and maintenance of the RRC connection is also required, that is, radio link monitoring (Radio Link Monitoring). , RLM) and radio link failure (Radio Link Failure, RLF) declaration. For the multicast service scenario, when a UE communicates with multiple UEs in a group, multi-carrier transmission is also supported, and multi-carrier link connections, namely RLM and RLF, also need to be managed and maintained.

Comparing the NR Uu port (the communication interface between the UE and the base station), the process of RLM and RLF is as follows:

When in the RRC_CONNECTED (Radio Resource Control Connection) state, the UE needs to perform radio link monitoring during the RLM process. In the RLM process, the UE physical layer first monitors the reference signal (RLM-Reference Signal, RLM- RS) obtains the value that can reflect the quality of the downlink radio link, and then compares the measured value with the synchronization and out-of-synchronization thresholds set in the UE to determine whether the UE is in-sync (in-sync, IS) or out-of-synchronization (out of synchronization) with the serving cell. -of-sync, OOS) state, and periodically report the IS/OOS state to the higher layer of the UE, that is, the access layer. The higher layer will decide subsequent operations based on the IS/OOS status reported by the physical layer signaling, such as triggering the radio link failure (Radio Link Failure, RLF) process, and starting the RRC connection re-establishment process.

There are three situations in which the direct communication interface reports and declares that the radio link fails, the RLF timer expires and the RLC reaches the maximum number of retransmissions. In the first situation, this application provides a multi-carrier direct link management method.

Based on the above scenario, the embodiment of the present application provides a multi-carrier direct link management method, which can be applied to the direct link multi-carrier characteristics of unicast services or multicast services in the NR system, thereby improving the direct link multi-carrier situation Link management effect.

In the following, the unicast service is taken as an example, and the embodiments of the application are described in further detail in conjunction with the accompanying drawings of the specification.

Example one

An embodiment of the present application provides a method for managing a multi-carrier through link, where the through link is a link between a first terminal and a second terminal, as shown in FIG. 2, which specifically includes:

Step 201: The first terminal monitors the link status of each carrier of the through link;

Step 202: The first terminal performs multi-carrier through link management according to the link status of each carrier of the through link, where the link status includes normal connection or connection failure.

Optionally, the monitoring of the link status of each carrier of the through link by the first terminal includes:

For the case of direct link multi-carrier, there are two situations:

Case 1: RRC signaling (signaling) on the direct link is fixed and transmitted on a certain carrier, which is the primary carrier, and other carriers are secondary carriers.

Case 2: RRC signaling on the direct link can be transmitted on any carrier, that is, there is no concept of primary carrier and secondary carrier. As an optional implementation manner, according to the link status of each carrier of the through link, the first terminal is divided into the above two cases to describe the multi-carrier through link management method:

Situation 1:

The first terminal performs multi-carrier direct link management according to the link status of each carrier of the direct link, including:

The first physical layer of the first terminal first obtains the radio link quality of each carrier of the direct link by measuring the RLM-RS of each carrier of the direct link. The first terminal compares the wireless link quality with the threshold of synchronization and out-of-synchronization of the through link to determine whether the wireless link of each carrier of the through link between the first terminal and other UEs is in IS or OOS Status, and report the IS/OOS status to the upper layer of the first terminal.

In a specific implementation, the RLF timer is used to determine whether to report the RLF to the upper layer of the first terminal. For the RLF timer timeout process as shown in FIG. 3, the first terminal monitors the radio link of each carrier of the direct link. When it is detected that the link connection quality of one of the carriers is lower than the preset threshold, it will report “out-of-sync”. If N310 “out-of-sync” are continuously reported, RLF timer T310 will start and time out at T310 Previously, if N311 "in-sync" were continuously received, stop T310, otherwise, when T310 times out, report a wireless link failure statement.

Optionally, if the first terminal is a receiving terminal, the carrier reselection manner may include the following two:

1) The first terminal sends the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal through the primary carrier;

2) The first terminal sends the identifier of the carrier whose link status is the connection failure to the second terminal or the third terminal through the primary carrier, so that the second terminal or the third terminal pair Reselecting the carrier whose connection failed;

The first terminal receives the carrier identification after carrier reselection sent by the second terminal or the third terminal through the primary carrier, or the first terminal receives on all the carriers in the resource pool, thereby receiving The information sent by the second terminal on the carrier after carrier reselection, where the second terminal is a sending terminal, and the third terminal is a control terminal, which is used to control the direct connection between the first terminal and the second terminal Link resources.

Optionally, if the first terminal is a transmitting terminal, the carrier reselection manner may include the following two:

2) The first terminal sends the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier, so that the second terminal or the third terminal Reselecting the carrier whose connection failed;

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through the primary carrier, and the third terminal is a control terminal for controlling the first terminal and the second terminal Direct link resources between.

Situation 2:

The first terminal performs multi-carrier direct link management according to the monitoring result of each carrier of the direct link, including:

When the first terminal determines that the link status of all carriers is connection failure, report a radio link failure statement to the higher layer of the first terminal; or

1) The first terminal sends the identity of the carrier whose link state is the connection failure and the carrier identity after carrier reselection to the second terminal through any carrier whose link state is normal connection;

2) The first terminal sends the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is normal, so that the second terminal Or the third terminal reselects the carrier whose connection fails;

The first terminal receives the carrier identification after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal, or all carriers in the resource pool of the first terminal To receive the information sent by the second terminal on the carrier after the carrier reselection, wherein the second terminal is a sending terminal, and the third terminal is a control terminal, which is used to control the first terminal and the second terminal. Direct link resources between two terminals.

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal, and the third terminal is a control terminal for controlling the second terminal. The direct link resource between a terminal and a second terminal.

The embodiment of the application provides a multi-carrier direct link management method, including side link failure declaration and carrier reselection method, which can be applied to the side link multi-carrier of unicast service or multicast service in NR system Features to improve the link management effect in the case of side link multi-carrier.

The following embodiments of the present application take the unicast service in the NR direct connection system as an example for description.

The specific implementation example is as follows:

Example two

For the first case in the first embodiment, the RRC signaling of the through link is fixed and transmitted on a certain carrier, which is the primary carrier, and the other carriers are secondary carriers.

The UE performs RLM measurement on each carrier of the direct link, and determines the RLF according to the RLF timer procedure in the first embodiment above, when the RLF timer times out.

If the primary carrier is RLF, regardless of whether the connection of other secondary carriers is normal or not, the RLF declaration (declaration) is reported to the higher layer of the UE, that is, the direct link link between the two UEs fails, but RLF recovery is not performed, unless said The higher layer of the UE instructs to establish the RRC connection of the through link.

If the secondary carrier is RLF, because the primary carrier is connected normally, but a certain secondary carrier fails to connect, it does not report the UE’s high-level link connection failure, and only performs carrier reselection according to the specific direct link service conditions, optional , Carrier reselection may not be performed, depending on the direct link service situation.

In the case of carrier reselection:

If the receiving UE detects the secondary carrier RLF, it can perform carrier reselection in any of the following two ways:

method one:

As shown in Figure 4, the receiving UE performs carrier reselection, and notifies the sending UE of the carrier identifier of the RLF and the carrier identifier after the carrier reselection;

Optionally, the receiving UE notifies the carrier identifier of the RLF and the carrier identifier after carrier reselection through RRC signaling on the primary carrier or a medium access control (Medium Access Control, MAC) control element (CE) Send UE.

Way two:

As shown in Figure 5, the receiving UE notifies the sending UE of the carrier identity of the RLF, and the sending UE performs carrier reselection.

Optionally, the receiving UE exchanges information with the sending UE through RRC signaling or MAC CE on the primary carrier:

The receiving UE notifies the sending UE of the carrier identity of the RLF through RRC signaling or MAC CE on the primary carrier;

The sending UE sends the carrier identification (Identity, ID) after carrier reselection to the receiving UE through RRC signaling or MAC CE on the primary carrier, or does not send the carrier ID after carrier reselection, directly after carrier reselection Data is sent on the carrier in the resource pool. As shown in Figure 6, the receiving UE receives data on all carriers in the resource pool.

Optionally, as shown in FIG. 7, the receiving UE notifies the controlling UE of the carrier identity of the RLF, and the controlling UE performs carrier reselection.

Optionally, the receiving UE exchanges information with the controlling UE through RRC signaling or MAC CE on the primary carrier:

The receiving UE notifies the controlling UE of the carrier identity of the RLF through RRC signaling or MAC CE on the primary carrier;

The controlling UE sends the carrier ID after carrier reselection to the receiving UE through RRC signaling or MAC CE on the primary carrier;

The primary carrier is the carrier used to send RRC signaling or MAC CE in the direct link between the control UE and the receiving UE.

If the sending UE detects the secondary carrier RLF, it can perform carrier reselection in any of the following two ways:

method one:

As shown in FIG. 8, the sending UE performs carrier reselection, and notifies the receiving UE of the carrier identifier of the RLF and the carrier identifier after the carrier reselection;

Optionally, the sending UE notifies the receiving UE of the carrier identifier of the RLF and the carrier identifier after carrier reselection through RRC signaling or MAC CE on the primary carrier.

Way two:

As shown in FIG. 9, the transmitting UE notifies the receiving UE of the carrier identity of the RLF, and the receiving UE performs carrier reselection, and then the receiving UE sends the carrier identity after the carrier reselection to the transmitting UE.

Optionally, the sending UE exchanges information through RRC signaling or MAC CE on the primary carrier:

The sending UE notifies the receiving UE of the carrier identity of the RLF through RRC signaling or MAC CE on the primary carrier;

The receiving UE sends the carrier ID after carrier reselection to the sending UE through RRC signaling or MAC CE on the primary carrier.

Optionally, as shown in FIG. 10, the sending UE notifies the controlling UE of the carrier identity of the RLF, and the controlling UE performs carrier reselection.

Optionally, the sending UE exchanges information with the controlling UE through RRC signaling or MAC CE on the primary carrier:

The sending UE notifies the controlling UE of the carrier identity of the RLF through RRC signaling or MAC CE on the primary carrier;

The controlling UE sends the carrier ID after carrier reselection to the sending UE through RRC signaling or MAC CE on the primary carrier;

The primary carrier is the carrier used to send RRC signaling or MAC CE in the direct link between the control UE and the sending UE.

Example three

For the second case in the first embodiment, the RRC signaling of the direct link can be transmitted on any carrier, that is, there is no concept of a primary carrier and a secondary carrier.

The UE performs RLM measurement on each carrier of the through link separately, and according to the RLF timer procedure in the first embodiment above, when the RLF timer times out, the RLF is determined.

When all the carriers are RLF, the RLF declaration is reported to the higher layer of the UE, that is, the direct link link between the two UEs fails, but RLF recovery is not performed, unless the higher layer of the UE instructs to establish an RRC connection.

If there is at least one carrier without RLF and at least one carrier RLF, because there are still carriers that are connected normally, messages such as RRC signaling can be transmitted, so the high-level link connection failure of the UE is not reported, only according to the specific direct link service conditions Carrier reselection. Optionally, carrier reselection may not be performed, depending on the direct link service conditions. For example, according to the existing direct link service conditions, if more carriers are not required to transmit data, the carrier may not be performed Re-elect.

In the case of carrier reselection:

If the receiving UE detects carrier RLF, it can perform carrier reselection in any of the following two ways:

method one:

As shown in Figure 11, the receiving UE performs carrier reselection, and notifies the sending UE of the carrier identity of the RLF and the carrier identity after the carrier reselection;

Optionally, the receiving UE notifies the sending UE of the carrier identifier of the RLF and the carrier identifier after carrier reselection through RRC signaling or MAC CE on any carrier that still maintains the connection.

Way two:

As shown in FIG. 12, the receiving UE notifies the sending UE of the carrier identity of the RLF, and the sending UE performs carrier reselection, and then the sending UE sends the carrier identity after the carrier reselection to the receiving UE.

Optionally, the receiving UE performs information exchange through RRC signaling or MAC CE on any carrier that still maintains the connection:

The receiving UE notifies the sending UE of the carrier identity of the RLF through RRC signaling or MAC CE on any carrier that still maintains the connection;

The sending UE sends the carrier ID after the carrier reselection to the receiving UE through RRC signaling or MAC CE on any carrier that still maintains the connection, or does not send the carrier ID after the carrier reselection, but directly after the carrier reselection. Data is sent on the carrier. As shown in Figure 13, the receiving UE receives data on all carriers in the resource pool.

Optionally, as shown in FIG. 14, the receiving UE notifies the controlling UE of the carrier identity of the RLF, and the controlling UE performs carrier reselection, and then the controlling UE sends the carrier identity after the carrier reselection to the receiving UE.

Optionally, the receiving UE and the controlling UE exchange information through RRC signaling or MAC CE on any carrier that maintains the connection:

The receiving UE notifies the controlling UE of the carrier identifier of the RLF through RRC signaling or MAC CE on any carrier that maintains the connection;

The controlling UE sends the carrier ID after carrier reselection to the receiving UE through RRC signaling or MAC CE on any carrier that maintains the connection;

The carrier is the carrier in the direct link between the control UE and the receiving UE.

If the sending UE detects carrier RLF, it can choose to perform carrier reselection in any of the following two ways:

method one:

As shown in FIG. 15, the sending UE performs carrier reselection, and notifies the receiving UE of the carrier identifier of the RLF and the carrier identifier after the carrier reselection;

Optionally, the sending UE notifies the receiving UE of the carrier identity of the RLF and the carrier identity after carrier reselection through RRC signaling or MAC CE on any carrier that still maintains the connection.

Way two:

As shown in FIG. 16, the sending UE notifies the receiving UE of the carrier identity of the RLF, and the receiving UE performs carrier reselection, and then the receiving UE sends the carrier identity after the carrier reselection to the sending UE.

Optionally, the sending UE performs information exchange through RRC signaling or MAC CE on any carrier that still maintains the connection:

The sending UE notifies the receiving UE of the carrier identity of the RLF through RRC signaling or MAC CE on any carrier that still maintains the connection;

The receiving UE sends the carrier ID after carrier reselection to the sending UE through RRC signaling or MAC CE on any carrier that still maintains the connection.

Optionally, as shown in FIG. 17, the sending UE notifies the controlling UE of the carrier identity of the RLF, and the controlling UE performs carrier reselection, and then the controlling UE sends the carrier identity after the carrier reselection to the sending UE.

Optionally, the sending UE and the controlling UE exchange information through RRC signaling or MAC CE on any carrier that maintains the connection:

The sending UE notifies the controlling UE of the carrier identity of the RLF through RRC signaling or MAC CE on any carrier that maintains the connection;

The controlling UE sends the carrier ID after carrier reselection to the sending UE through RRC signaling or MAC CE on any carrier that maintains the connection;

Example four

This embodiment provides a multi-carrier through link management terminal. The through link is a link between a first terminal and a second terminal. As shown in FIG. 18, the terminal includes a processor 1801 and a memory 1802.

The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 can store data used by the processor 1801 when performing operations. The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1801 and various circuits of the memory represented by the memory 1802 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface 1803 provides an interface. The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 can store data used by the processor 1801 when performing operations.

The process disclosed in the embodiment of the present application may be applied to the processor 1801 or implemented by the processor 1801. In the implementation process, each step of the signal processing flow can be completed by hardware integrated logic circuits in the processor 1801 or instructions in the form of software. The processor 1801 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers. The storage medium is located in the memory 1802, and the processor 1801 reads the information in the memory 1802, and completes the steps of the signal processing flow in combination with its hardware.

Among them, the processor 1801 is configured to read a program in the memory 1802 and execute the following process:

Monitor the link status of each carrier of the through link;

As a possible implementation manner, the processor 1801 is specifically configured to perform multi-carrier direct link management according to the link status of each carrier of the direct link, including:

As a possible implementation manner, the processor 1801 is specifically configured to monitor the link status of each carrier of the through link, including:

As a possible implementation manner, the terminal is a receiving terminal or a transmitting terminal, and the processor 1801 is specifically configured to reselect a carrier whose link status is connection failure, including:

As a possible implementation manner, the processor 1801 is configured to send the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal, including:

As a possible implementation manner, the terminal is a receiving terminal, and the processor 1801 is specifically configured to reselect a carrier whose link status is connection failure, including:

As a possible implementation manner, the processor 1801 is specifically configured to send the identifier of the carrier whose link status is the connection failure to the second terminal, including:

As a possible implementation manner, the processor 1801 is specifically configured to receive the carrier identifier after carrier reselection sent by the second terminal or the third terminal, including:

As a possible implementation manner, the terminal is a transmitting terminal, and the processor 1801 is specifically configured to reselect a carrier whose link status is connection failure, including:

As a possible implementation manner, the processor 1801 is specifically configured to send the identifier of the carrier whose link status is the connection failure to the second terminal or the third terminal, including:

As a possible implementation manner, the processor 1801 is specifically configured to receive the carrier identifier after carrier reselection sent by the second terminal, including:

Example five

This embodiment provides a multi-carrier through link management device. The through link is a link between a first terminal and a second terminal. The schematic diagram of the device is shown in FIG. 19, and the above device includes:

The wireless link monitoring module 1901 is used to monitor the link status of each carrier of the through link;

The multi-carrier through link management module 1902 is configured to perform multi-carrier through link management according to the link status of each carrier of the through link, where the link status includes normal connection or connection failure.

As a possible implementation manner, the foregoing multi-carrier through link management module 1902 is specifically configured to:

As a possible implementation manner, the above-mentioned wireless link monitoring module 1901 is specifically configured to:

As a possible implementation manner, the first terminal is a receiving terminal or a transmitting terminal, and the multi-carrier direct link management module 1902 is specifically configured to:

As a possible implementation manner, the first terminal is a receiving terminal, and the foregoing multi-carrier direct link management module 1902 is specifically configured to:

As a possible implementation manner, the first terminal is a sending terminal, and the foregoing multi-carrier direct link management module 1902 is specifically configured to:

Example Six

This embodiment provides a computer storage medium on which a computer program is stored. When the program is executed by a processor, the method for transmitting data described in any of the above embodiments is implemented. For details, please refer to the description of the above embodiment, which will not be repeated here. Narrated.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to the embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A multi-carrier through link management method, where the through link is a link between a first terminal and a second terminal, characterized in that the method includes:

The first terminal monitors the link status of each carrier of the through link;

The first terminal performs multi-carrier through link management according to the link status of each carrier of the through link, and the link status includes normal connection or connection failure.
The method according to claim 1, wherein the first terminal performs multi-carrier direct link management according to the link status of each carrier of the direct link, comprising:

When the first terminal determines that the link status of the first carrier is a connection failure, and determines that the first carrier is the primary carrier, report a radio link failure statement to the upper layer of the first terminal; or

When the first terminal determines that the link status of the first carrier is connection failure, and determines that the first carrier is the secondary carrier, reselect the carrier whose link status is connection failure.
The method according to claim 1, wherein the first terminal performs multi-carrier direct link management according to the link status of each carrier of the direct link, comprising:

When the first terminal determines that the link status of all carriers is connection failure, report a radio link failure statement to the higher layer of the first terminal; or

When the first terminal determines that the link status of at least one carrier is connection failure, and the link status of at least one carrier is connection normal, reselect the carrier whose link status is connection failure.
The method according to claim 1, wherein the monitoring of the link status of each carrier of the through link by the first terminal comprises:

For each carrier, when the first terminal continuously monitors for N1 times that the quality of the direct link of the carrier is lower than the preset threshold, it starts a timer, and N1 is a preset positive integer;

When the timer reaches the preset duration, it is determined that the through link connection of the carrier fails;

The condition for stopping the timer is that the first terminal continuously monitors for N2 times that the quality of the through link of the carrier is not lower than a preset threshold, and N2 is a preset positive integer.
The method according to claim 2 or 3, wherein the first terminal is a receiving terminal or a transmitting terminal, and reselecting a carrier whose link status is connection failure includes:

The first terminal reselects the carrier whose link status is the connection failure, and sends the identifier of the carrier whose link status is the connection failure and the carrier identifier after the carrier reselection to the second terminal.
The method according to claim 5, wherein sending the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal comprises:

The first terminal sends the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal through the primary carrier; or

The first terminal sends the identity of the carrier whose link state is the connection failure and the carrier identity after carrier reselection to the second terminal through any carrier whose link state is a normal connection.
The method according to claim 2 or 3, wherein the first terminal is a receiving terminal, and reselecting a carrier whose link status is connection failure includes:

The first terminal sends to the second terminal or the third terminal the identifier of the carrier whose link status is the connection failure, so that the second terminal or the third terminal performs the operation on the carrier whose connection fails. Re-election

The first terminal receives the carrier identifier after the carrier reselection sent by the second terminal or the third terminal, or the first terminal receives on all the carriers in the resource pool, thereby receiving the first terminal 2. Information sent by the terminal on the carrier after carrier reselection;

The third terminal is a control terminal, which is used to control the direct link resource between the first terminal and the second terminal.
The method according to claim 7, wherein the sending, by the first terminal, to the second terminal or the third terminal the identifier of the carrier whose link status is the connection failure comprises:

The first terminal sends the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier; or

The first terminal sends the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is the normal connection.
The method according to claim 7, wherein the receiving, by the first terminal, the carrier identifier after the carrier reselection sent by the second terminal or the third terminal comprises:

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through the primary carrier; or

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal.
The method according to claim 2 or 3, wherein the first terminal is a transmitting terminal, and reselecting a carrier whose link status is connection failure includes:

The first terminal sends to the second terminal or the third terminal the identifier of the carrier whose link status is the connection failure, so that the second terminal or the third terminal can respond to the failure of the connection Carrier reselection;

Receiving, by the first terminal, the carrier identifier after carrier reselection sent by the second terminal or the third terminal;

The third terminal is a control terminal, which is used to control the direct link resource between the first terminal and the second terminal.
The method according to claim 10, wherein the sending, by the first terminal, to the second terminal or the third terminal the identifier of the carrier whose link status is the connection failure comprises:

The first terminal sends the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier; or

The first terminal sends the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is the normal connection.
The method according to claim 10, wherein the receiving, by the first terminal, the carrier identifier after carrier reselection sent by the second terminal or the third terminal comprises:

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through the primary carrier; or

The first terminal receives the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal.
A multi-carrier through link management terminal, where the through link is a link between a first terminal and a second terminal, and is characterized in that the terminal includes:

A processor and a memory, where the memory is used to store a program executable by the processor, and the processor is used to read the program in the memory and execute the following process:

Monitor the link status of each carrier of the through link;

According to the link status of each carrier of the through link, multi-carrier through link management is performed, and the link status includes normal connection or connection failure.
The terminal according to claim 13, wherein the processor is specifically configured to:

When it is determined that the link status of the first carrier is connection failure, and it is determined that the first carrier is the primary carrier, report a radio link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of the first carrier is connection failure, and it is determined that the first carrier is the secondary carrier, the carrier whose link status is connection failure is reselected.
The terminal according to claim 13, wherein the processor is specifically configured to:

When it is determined that the link status of all carriers is connection failure, report a wireless link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of at least one carrier is connection failure, and the link status of at least one carrier is connection normal, the carrier whose link status is connection failure is reselected.
The terminal according to claim 13, wherein the processor is specifically configured to:

For each carrier, when it is continuously monitored N1 times that the quality of the direct link of the carrier is lower than the preset threshold, a timer is started, and N1 is a preset positive integer;

When the timer reaches the preset duration, it is determined that the through link connection of the carrier fails;

The condition for the timer to stop is that the quality of the direct link of the carrier is not lower than a preset threshold value, and N2 is a preset positive integer.
The terminal according to claim 14 or 15, wherein the terminal is a receiving terminal or a sending terminal, and the processor is specifically configured to:

Reselect the carrier whose link status is the connection failure, and send the identifier of the carrier whose link status is the connection failure and the carrier identifier after the carrier reselection to the second terminal.
The terminal according to claim 17, wherein the processor is configured to:

Sending the identifier of the carrier whose link status is connection failure and the carrier identifier after carrier reselection to the second terminal through the primary carrier; or

Send the identity of the carrier whose link state is the connection failure and the carrier identity after carrier reselection to the second terminal through any carrier whose link state is the normal connection.
The terminal according to claim 14 or 15, wherein the terminal is a receiving terminal, and the processor is specifically configured to:

Sending the identifier of the carrier whose link status is the connection failure to the second terminal or the third terminal, so that the second terminal or the third terminal reselects the carrier whose connection has failed;

Receive the carrier identification after carrier reselection sent by the second terminal or the third terminal, or receive on all the carriers in the resource pool, so as to receive the second terminal on the carrier after carrier reselection Information sent;

The third terminal is a control terminal, which is used to control the direct link resource between the first terminal and the second terminal.
The terminal according to claim 19, wherein the processor is specifically configured to:

Sending the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier; or

Send the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is the normal connection.
The terminal according to claim 19, wherein the processor is specifically configured to:

Through the primary carrier, receiving the carrier identifier after carrier reselection sent by the second terminal or the third terminal; or,

Receive the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal.
The terminal according to claim 14 or 15, wherein the terminal is a sending terminal, and the processor is specifically configured to:

Sending the identifier of the carrier whose link status is the connection failure to the second terminal or the third terminal, so that the second terminal or the third terminal reselects the carrier whose connection has failed;

Receiving the carrier identifier after carrier reselection sent by the second terminal or the third terminal;

The third terminal is a control terminal, which is used to control the direct link resource between the first terminal and the second terminal.
The terminal according to claim 22, wherein the processor is specifically configured to:

Send the identifier of the carrier whose link status is connection failure to the second terminal or the third terminal through the primary carrier; or,

Send the identifier of the carrier whose link state is the connection failure to the second terminal or the third terminal through any carrier whose link state is the normal connection.
The terminal according to claim 22, wherein the processor is specifically configured to:

Receiving the carrier identifier after carrier reselection sent by the second terminal or the third terminal through the primary carrier; or

Receive the carrier identifier after carrier reselection sent by the second terminal or the third terminal through any carrier whose link status is normal.
A multi-carrier direct link management device, which is characterized in that it comprises:

The wireless link monitoring module is used to monitor the link status of each carrier of the through link;

The multi-carrier through link management module is configured to perform multi-carrier through link management according to the link status of each carrier of the through link, where the link status includes normal connection or connection failure.
The device according to claim 25, wherein the multi-carrier direct link management module is specifically configured to:

When it is determined that the link status of the first carrier is connection failure, and it is determined that the first carrier is the primary carrier, report a radio link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of the first carrier is connection failure, and it is determined that the first carrier is the secondary carrier, the carrier whose link status is connection failure is reselected.
The device according to claim 25, wherein the multi-carrier direct link management module is specifically configured to:

When it is determined that the link status of all carriers is connection failure, report a wireless link failure statement to the upper layer of the first terminal; or

When it is determined that the link status of at least one carrier is connection failure, and the link status of at least one carrier is connection normal, the carrier whose link status is connection failure is reselected.
The device according to claim 25, wherein the wireless link monitoring module is specifically configured to:

For each carrier, when it is continuously monitored N1 times that the quality of the direct link of the carrier is lower than the preset threshold, a timer is started, and N1 is a preset positive integer;

When the timer reaches the preset duration, it is determined that the through link connection of the carrier fails;

The condition for the timer to stop is that the quality of the direct link of the carrier is not lower than a preset threshold value, and N2 is a preset positive integer.
A computer storage medium, wherein the computer storage medium stores a computer program, and the computer program implements the method of any one of claims 1-12 when executed.