WO2014075242A1

WO2014075242A1 - Method and apparatus for processing wireless link failure

Info

Publication number: WO2014075242A1
Application number: PCT/CN2012/084601
Authority: WO
Inventors: 杨飞; 李龠; 郭小龙; 李秉肇; 朱松
Original assignee: 华为技术有限公司
Priority date: 2012-11-14
Filing date: 2012-11-14
Publication date: 2014-05-22
Also published as: CN103975614B; CN103975614A

Abstract

Embodiments of the present invention relate to the technical field of communications. Disclosed are a method and an apparatus for processing a wireless link failure. The method comprises: after detecting the wireless link failure, a first user equipment (UE) initiating rebuilding of a wireless link; if the wireless link fails to be rebuilt, the first UE sending a keep-alive packet to a second UE through a short-distance link, wherein the keep-alive packet contains at least keep-alive indication information used for instructing a base station to retain a context of the first UE, enabling the base station to retain the context of the first UE according to the keep-alive indication information. The present invention applies to a technology of multiple UEs cooperative communication.

Description

Method and device for processing wireless link failure

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing a radio link failure. Background technique

With the rapid development of global communication technologies, there are many different types of mobile communication systems, such as Global System of Mobile communication (GSM) network, General Packet Radio Service (General Packet Radio Service). , English abbreviation for GPRS) Network, Wideband Code Division Multiple Access (WCDMA) network, CDMA_ ² 000 network, Time Division Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access, English Abbreviated as TD-SCDMA) Network, Worldwide Interoperability for Microwave Access (WiMAX) network. In addition to providing voice communication services, these mobile communication systems typically provide data communication services. However, the current communication means are operated for a single user equipment (User Equipment, abbreviated as UE). Even with enhanced communication means to increase the reliability and/or throughput of data transmissions of user equipment, it is still only an operation of single-user equipment. Once the user equipment's own environment deteriorates, the throughput and/or reliability of the data transmission of the user equipment will drop dramatically. In order to improve the throughput and/or reliability of the data transmission of the user equipment, short-distance communication technologies supported by the user equipment itself can be utilized. For example, the smartphone can basically support short-distance communication technologies (such as WiFi or BlueTooth) and cellular. Communication technologies (such as LTE, ³ G UMTS or CDMA, 2G GSM, WiMAX, etc.), cellular technology uses LTE as an example, short-range communication technology uses WiFi as an example, in the context of cooperative communication between single network nodes and multiple users. In the scenario of multiple UEs Cooperative Communication (MUCC), when at least two UEs have the characteristics of supporting both WiFi and LTE, in order to increase reliability and throughput. A MUCC relationship may be established between the at least two UEs, that is, one of the at least two UEs needs to send or receive data, and other UEs other than the one UE may support, and assist the one UE to perform Communication. For example, the one UE is named as a beneficiary UE, a served UE, or a assisted UE, and other UEs other than the one UE are named as supporting UE, serving UE, or assisting UE, and may benefit by supporting the UE's assisted transmission. Reliability and throughput of UE communications.

In the scenario of multi-user cooperative communication, once the benefiting UE or the radio link supporting the UE fails, the T31 1 timer is started, and cell reselection and radio link re-establishment are performed, if the T31 1 timer expires, If the UE's link fails to be successfully re-established, the UE enters an idle state, causing the UE's communication to be interrupted and reducing the user experience. Summary of the invention

The embodiments of the present invention provide a method and an apparatus for processing a radio link failure, which can prevent user equipment communication interruption and improve user experience in a scenario where multi-user cooperative communication is performed.

The technical solution adopted by the embodiment of the present invention is:

The first aspect provides a method for processing a radio link failure, including:

After the first user equipment UE detects that the radio link fails, the reestablishment of the radio link is initiated; if the radio link reestablishment fails, the first UE sends the keepalive packet to the second UE by using the short-distance link, The keep-alive packet includes at least a keep-alive indication information indicating that the base station reserves the context of the first UE, so that the base station reserves the context of the first UE according to the keep-alive indication information in a first possible implementation. In the manner, when the reestablishing the initiating radio link, the method further includes: starting a first timer, where the first timer is used to perform timing for reestablishing a radio link of the first UE, so that the first The UE performs N times of radio link reestablishment within the time limit specified by the first timer until the radio link is successfully reconstructed, and the N is an integer greater than or equal to 1.

With reference to the first aspect and the first possible implementation manner of the first aspect, in a second possible implementation manner, before the first UE sends the keep-alive packet to the second UE by using the short-distance link, The method includes: receiving an indication message that is forwarded by the second UE, where the indication message is used to instruct the first UE to report the keep-alive packet. The keep-alive packet further includes measurement information of the first UE, and the measurement information of the first UE is used to provide a determination condition for whether the base station needs to switch the first UE.

The second aspect provides a method for processing a radio link failure, including:

Receiving a keep-alive packet sent by the first user equipment UE, where the keep-alive packet includes at least a keep-alive indication information for indicating that the base station reserves the context of the first UE;

And transmitting the keep-alive packet to the base station, so that the base station reserves the context of the first UE according to the keep-alive indication information.

In a first possible implementation manner, before the receiving the keep-alive packet sent by the first user equipment, the method further includes: receiving an indication message periodically sent by the base station, before the first timer expires, The indication message is used to indicate that the first UE reports the keep-alive packet, where the first timer is used to perform timing for reestablishing a radio link of the first UE, so that the first UE is in the During the time limit specified by the first timer, performing N times of radio link reestablishment until the radio link is successfully reestablished, the N being an integer greater than or equal to 1; forwarding the indication message to the first UE by using a short-distance link .

The third aspect provides a method for processing a radio link failure, including:

And receiving, by the second UE, the keepalive packet reported by the first UE, where the keepalive packet includes at least the keepalive indication information used by the base station to reserve the context of the first UE;

And retaining the context of the first UE according to the keep-alive indication information.

In a first possible implementation manner, the method further includes: sending an indication message to the second UE, to enable the second UE to forward the indication message to the first UE, where the indication message is And configured to instruct the first UE to report the keep-alive packet.

The keep-alive package further includes measurement information of the first UE.

The method further includes:

And releasing the composite bearer according to the measurement information of the first UE or performing overall handover for the first UE and the second UE.

A fourth aspect provides a processing device for a radio link failure, including:

a detecting unit, configured to detect a radio link failure; a link reconstruction unit, configured to initiate a reestablishment of the radio link after the detecting unit detects that the radio link fails;

a sending unit, configured to send a keep-alive packet to the second UE by using the short-distance link after the link re-establishment unit fails to perform radio link re-establishment, where the keep-alive packet includes at least The keep alive indication information of the context of the UE, so that the base station reserves the context of the first UE according to the keep-alive indication information.

In a first possible implementation, the device further includes: a timer starting unit, configured to: after the detecting unit detects that the radio link fails, start a first timer, where the first timer is used to The reestablishing of the radio link of the first UE is performed, so that the first UE performs N times radio link reestablishment within a time limit specified by the first timer, until the radio link reestablishment is successful, the N Is an integer greater than or equal to 1.

Optionally, the device further includes: a receiving unit, configured to receive, after the sending unit sends the keep-alive packet to the second UE, an indication message that is forwarded by the second UE, where the indication message is used to indicate The first UE is provided with the keep-alive package.

The keep-alive packet sent by the sending unit further includes measurement information of the first UE, and the measurement information of the first UE is used to provide a determination condition for whether the base station needs to switch the first UE.

A fifth aspect provides a processing device for a radio link failure, including:

a receiving unit, configured to receive a keep-alive packet sent by the first user equipment UE, where the keep-alive packet includes at least a keep-alive indication information used to indicate that the base station reserves the context of the first UE;

And a sending unit, configured to send the keep-alive packet received by the receiving unit to the base station, so that the base station reserves the context of the first UE according to the keep-alive indication information.

In a first possible implementation manner, the receiving unit is further configured to: before receiving a timeout of the first timer, receive an indication message periodically sent by the base station, where the indication message is used to indicate that the first UE reports The keepalive packet, where the first timer is used to perform timing for reestablishing a radio link of the first UE, so that the first UE performs N within a time limit specified by the first timer. Secondary radio link reestablishment until the radio link is successfully reestablished, the N being an integer greater than or equal to 1; The unit is further configured to: forward, by the short-distance link, the indication message received by the receiving unit to the first UE.

A sixth aspect provides a processing device for a radio link failure, including:

a receiving unit, configured to receive a keep-alive packet forwarded by the first UE, and the keep-alive packet includes at least a keep-alive indication information indicating that the base station reserves the context of the first UE; And for retaining, according to the keep-alive indication information received by the receiving unit, a context of the first UE.

In a first possible implementation manner, the device further includes: a sending unit, configured to send an indication message to the second UE, to enable the second UE to forward the indication message to the first UE The indication message is used to indicate that the first UE reports the keep-alive packet.

The keep-alive packet received by the receiving unit further includes measurement information of the first UE.

Optionally, the device further includes: a switching unit, configured to release the composite bearer according to the measurement information of the first UE received by the receiving unit, or perform overall handover for the first UE and the second UE.

In a seventh aspect, a user equipment is provided, including:

a processor, configured to detect a failure of the wireless link; and, configured to initiate a reconstruction of the wireless link after detecting the failure of the wireless link;

a transmitter, configured to send a keep-alive packet to the second user equipment UE by using a short-distance link after the radio link re-establishment fails, where the keep-alive packet includes at least indicating that the base station reserves the first The keep alive indication information of the context of the UE, so that the base station reserves the context of the first UE according to the keep-alive indication information.

In a first possible implementation manner, the processor is further configured to: after detecting a radio link failure, start a first timer, where the first timer is used to be a radio link of the first UE The re-establishment is performed, and the first UE performs N times of radio link re-establishment within a time limit specified by the first timer, until the radio link re-establishment is successful, and the N is an integer greater than or equal to 1.

Optionally, the user equipment further includes: a receiver, configured to receive, by the second UE, an indication message forwarded by the second UE, where the identifier is used to send a keep-alive packet to the second UE, where the indication message is used by Means Showing the keep-alive package on the first UE.

The keep-alive packet sent by the transmitter further includes measurement information of the first UE, and the measurement information of the first UE is used to provide a determination condition for whether the base station needs to switch the first UE.

In an eighth aspect, a user equipment is provided, including:

a receiver, configured to receive a keep-alive packet sent by the first user equipment UE by using a short-distance link, where the keep-alive packet includes at least a keep-alive indication information for indicating that the base station reserves the context of the first UE; And sending the keep-alive packet received by the receiver to a base station, so that the base station reserves a context of the first UE according to the keep-alive indication information.

In a first possible implementation manner, the receiver is further configured to: receive an indication message periodically sent by the base station, where the indication message is used to indicate that the first UE reports The keepalive packet, where the first timer is used to perform timing for reestablishing a radio link of the first UE, so that the first UE performs N within a time limit specified by the first timer. The secondary radio link is re-established until the radio link is successfully re-established, and the N is an integer greater than or equal to 1; the transmitter is further configured to: forward, by the short-distance link, the receiver to the first UE The indication message.

In a ninth aspect, a base station is provided, including:

a receiver, configured to receive a keep-alive packet forwarded by the first UE, and the keep-alive packet includes at least a keep-alive indication information indicating that the base station reserves the context of the first UE; And for retaining a context of the first UE according to the keep-alive indication information received by the receiver.

In a first possible implementation manner, the base station further includes: a transmitter, configured to send an indication message to the second UE, to enable the second UE to forward the indication message to the first UE The indication message is used to indicate that the first UE reports the keep-alive packet.

The keep-alive packet received by the receiver further includes measurement information of the first UE.

Optionally, the processor is further configured to: release the composite bearer according to the measurement information of the first UE, or perform overall handover for the first UE and the second UE.

Compared with the prior art, after the radio link of the first UE fails and the reconstruction fails, Continuing to try to reestablish the wireless link to prevent the first UE from entering the idle state; and the first UE sends the keep-alive packet to the second UE through the short-distance link, and the second UE forwards the keep-alive packet to the base station, preventing the base station from releasing the first a UE's context, which in turn prevents the UE from entering an idle state. Optionally, when the first UE continues to attempt to reestablish the radio link, the base station periodically sends an indication message to the second UE, and the second UE forwards the indication message. And sending, to the first UE, the first UE to report the keep-alive packet to the base station. Further, in the scenario of multi-user cooperative communication, the UE enters the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station determines the communication quality according to the first UE, where feasible. After the first UE is switched to another base station, after the radio link reestablishment of the UE fails, the connection state is maintained, thereby preventing communication data interruption and improving user experience. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are merely the present invention. Some of the embodiments may be obtained by those of ordinary skill in the art in view of these drawings without any inventive effort.

FIG. 1 is a flowchart of a method according to an embodiment of the present invention;

2 is a flowchart of a method according to another embodiment of the present invention;

3 is a flowchart of a method according to another embodiment of the present invention;

4 is a flowchart of a method according to another embodiment of the present invention;

5 and FIG. 6 are schematic structural diagrams of a device according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a device according to another embodiment of the present invention; FIG.

8 and FIG. 9 are schematic structural diagrams of a device according to another embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a user equipment according to another embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a user equipment according to another embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a base station according to another embodiment of the present invention. detailed description

The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. It is clear that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to make the advantages of the technical solutions of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and embodiments. An embodiment of the present invention provides a method for processing a radio link failure. As shown in FIG. 1, the method includes:

101. When the first user equipment UE detects that the radio link fails, initiates reestablishment of the radio link.

102. If the radio link reestablishment fails, the first UE sends a keep-alive packet to the second UE by using a short-distance link.

The keep-alive packet includes at least the information indicating that the base station reserves the context of the first UE, so that the base station reserves the context of the first UE according to the keep-alive indication information.

Optionally, the initiating the re-establishment of the radio link, the method further includes: starting a first timer, where the first timer is used to perform timing for reestablishing a radio link of the first UE, to enable the first UE During the time limit specified by the first timer, N radio link re-establishments are performed until the radio link re-establishment is successful, and the N is an integer greater than or equal to 1.

It should be noted that the time limit specified by the first timer is greater than the duration of the T311 timer, where the T311 timer is used in the prior art for performing radio link reestablishment. When the T311 timer expires, the UE If the radio link is still not successfully reconstructed, the UE enters an idle state (id le).

Optionally, before the first UE sends the keep-alive packet to the second UE by using the short-distance link, the method further includes: receiving an indication message that is forwarded by the second UE, where the indication message is used to indicate the The first UE reports the keep-alive package.

The keep-alive packet further includes measurement information of the first UE, and the measurement information of the first UE is used to provide a determination condition for whether the base station needs to switch the first UE. Compared with the prior art, after the radio link of the first UE fails and the reestablishment fails, the re-establishment of the radio link is continued to prevent the first UE from entering the idle state; and the first UE passes the short-distance link to the first The second UE sends the keepalive packet, and the second UE forwards the keepalive packet to the base station, preventing the base station from releasing the context of the first UE, thereby preventing the first UE from entering the idle state. Further, in the scenario of multi-user cooperative communication, the problem that the radio link of the first UE fails to enter the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station makes a judgment according to the communication quality of the first UE, which is feasible. In the case of the first UE, switching to another base station prevents communication data from being interrupted and improves the user experience. Another embodiment of the present invention provides a method for processing a radio link failure. As shown in FIG. 2, the method includes:

201. The second UE receives the keep-alive packet sent by the first UE.

The keep-alive packet includes at least information indicating that the base station reserves the context of the first UE.

202. The second UE sends the keep-alive packet to the base station, so that the base station reserves the context of the first UE according to the keep-alive indication information.

Optionally, before the second UE receives the keep-alive packet sent by the first user equipment, the method further includes: receiving, before the first timer expires, an indication message periodically sent by the base station, where the indication message is used by Instructing the first UE to report the keepalive packet, where the first timer is used to perform timing for reestablishing a radio link of the first UE, so that the first UE is at the first timing N times of radio link reestablishment is performed within the time limit specified by the device, until the radio link is successfully reestablished, and the N is an integer greater than or equal to 1; the indication message is forwarded to the first UE by using a short-distance link.

Compared with the prior art, the second UE receives the keep-alive packet sent by the first UE, and forwards the keep-alive packet to the base station, preventing the base station from releasing the context of the first UE, thereby preventing the first UE from entering an idle state; When the first UE continues to try to re-establish the wireless link, the second UE receives the indication message periodically sent by the base station, and forwards the indication message to the first UE, instructing the first UE to report the keep-alive packet to the base station. Further, in the scenario of multi-user cooperative communication, the wireless connection of the first UE fails to be reconstructed immediately after the failure of the reconstruction. The problem of the idle state, and by reporting the keep-alive packet to the base station, the base station makes a decision according to the communication quality of the first UE, and if possible, switches the first UE to another base station, prevents communication data from being interrupted, and improves the user experience. Another embodiment of the present invention provides a method for processing a radio link failure. As shown in FIG. 3, the method includes:

301. The base station receives the keep-alive packet forwarded by the first UE, and the keep-alive packet includes at least the keep-alive indication information used by the base station to reserve the context of the first UE.

302. Reserve a context of the first UE according to the keep-alive indication information.

Optionally, the method further includes: sending an indication message to the second UE, to enable the second UE to forward the indication message to the first UE, where the indication message is used to indicate that the first UE reports The keep-alive package.

The method further includes: releasing the composite bearer according to the measurement information of the first UE or performing overall handover for the first UE and the second UE.

For example, determining the link quality according to the measurement information of the first UE; if the link quality between the first UE and the second UE is less than the first threshold, releasing the composite bearer, the first The threshold is a standard parameter for measuring the quality of the link. If the link quality between the first UE and the second UE is greater than or equal to the first threshold, the first UE and the second UE are switched.

It should be noted that, in the embodiment of the present invention, the specific decision condition for releasing the composite bearer or for the overall handover of the first UE and the second UE is not limited, and in the actual communication process, the link quality may be Other parameters, or other thresholds for link quality, are determined, and no one is mentioned here.

Compared with the prior art, the first UE is processed according to the keep-alive packet reported by the first UE, and according to the information of the keep-alive packet. After the first UE reestablishes the radio link failure, the context of the first UE is reserved for a period of time, so that the communication of the first UE is not interrupted, and the quality of the link is The analysis of the quantity releases the composite bearer formed by the first UE, the second UE, and the base station, or performs overall handover for the first UE and the second UE, thereby ensuring the communication quality of the first UE and improving the user experience. Another embodiment of the present invention provides a method for processing a radio link failure, in which a benefiting UE, a supporting UE, and a base station have performed a synthetic communication process, and the system consisting of the three is in a multi-user cooperative communication scenario, and supports the UE to receive the base station. The data is forwarded to the benefit UE through the short-distance link, and the wireless link failure of the UE is taken as an example. As shown in FIG. 4, the method includes:

401. The UE detects that the radio link fails.

402. The benefit UE attempts to reestablish the same base station as the previous radio link and starts the first timer. The duration of the first timer is greater than that of the traditional T311 timer, and the duration of the first timer may be infinite. The primary role of the first timer is to provide timing for the reconstruction of the wireless link of the benefiting UE, as long as the wireless link of the benefiting UE is not available. The reconstruction can be successful or the base station does not take further processing on the benefiting UE, and the first timer is always in the startup state.

Optionally, the benefiting UE needs to carry some parameter information in the reestablishment message sent to the base station, for example, C-RNTI (Cell RN Radio Network Temporary Ident if ier, cell radio network temporary identifier), Physical cell ID and short (shor t) MAC- 1 (Mes sage Authent icating Code for Integrity). For the reconstruction process of this step, since it is known that the same base station is re-established, the benefiting UE may trim or modify some parameters in the reconstructed message when initiating the re-establishment, for example, the physical cell ID may not be carried. It affects the process of reconstruction and also saves air resources.

403. After the benefit UE fails to reestablish the radio link, continue to try to reestablish the radio link.

The main function of this step is to prevent the benefit UE from entering the idle state immediately after the radio link reestablishment fails, and maintaining the communication connection between the benefit UE and the base station.

404. The benefit UE sends a keep-alive packet to the supporting UE.

After the failed UE re-establishment failure, in order to ensure that the base station does not release the context of the benefiting UE, the benefiting UE needs to report the keep-alive packet to the base station, and notifies the base station not to release the context of the benefiting UE; The UE is indirectly communicating with the base station by supporting the UE, so the keep-alive packet is first sent to the supporting UE, and then forwarded to the base station through it. The keep-alive packet includes the keep-alive indication information and the measurement information of the benefit UE, where the keep-alive indication information is used to indicate that the base station reserves the context of the benefit UE, and the measurement information of the benefit UE And a method for providing a decision condition for whether the base station needs to switch the benefit UE.

Optionally, the benefit UE may periodically send the keep-alive packet to the supporting UE; or

After the receiving UE receives the indication message of the live-protected packet that is forwarded by the UE, and then sends the keep-alive packet to the supporting UE, before the step 404, the method further includes: the base station periodically sends an indication message to the supporting UE, where the indication is sent. The message is used to indicate that the first UE reports the keep-alive packet; and the supporting UE forwards the indication message to the benefit UE.

405. The supporting UE forwards the keep-alive packet sent by the benefiting UE to the base station.

In the process of transmitting the keep-alive packet involved in the embodiment, the keep-alive packet may be sent separately, or the keep-alive packet may be embedded in the data packet for transmission.

406. After receiving the keep-alive packet, the base station performs processing according to the information included in the keep-alive package.

Optionally, the base station may release the composite bearer, and the synthetic communication process is removed; or, the benefit UE is switched to another base station. For example, when the measurement information in the keep-alive packet indicates that the current communication signal quality is poor, the base station may perform a determination to switch the benefit UE to the base station with better signal quality; or, the benefit UE does not need to continue to synthesize the communication scenario here. Under the communication, the base station can release the composite bearer and tear down the synthetic communication flow.

It should be noted that the benefit UE in this embodiment is the first UE described in the foregoing embodiment, and the support UE is the second UE described in the foregoing embodiment. The benefiting UE is the final sender of the uplink data or the final receiver of the downlink data (from the perspective of the cell). Generally, there is only one for a certain bearer, and the supporting UE is used to assist the benefiting UE for data relay. The UE may have multiple bearers for the benefit UE.

Specifically, the UE and the benefit UE are taken as an example. The concept of benefiting the UE and supporting the UE is from the perspective of the bearer of the benefit UE. For example, UE1 and UE2 form a MUCC, and they can mutually assist communication. At a certain bearer angle of UE1, UE2 can support the bearer of UE1, so UE1 is a beneficiary UE, and UE2 is a supporting UE. At the same time, UE1 can also support a certain bearer of UE2, so that from the perspective of this bearer of UE2, UE2 is a beneficiary UE, and UE1 is a supporting UE.

Further, in the example of supporting the UE and the benefiting UE, when the UE is in the same short-distance connection range, the network may send downlink data to the supporting UE and the benefit UE respectively (the optimization method is: the network scheduling general meeting) When the network sends the downlink data to the supporting UE, the supporting UE that receives the data sends the data to the benefit UE through short-range communication (for example, Wi F i ). Of course, the data may also be directly arrived at the benefiting UE, and the data is merged by the benefiting UE. Similarly, the uplink data of the benefiting UE can also be sent to the network through the benefit UE itself or other supporting UE, and then the network performs data combining to complete the cooperative communication between the UEs. Thereby, the reliability and throughput of the benefit UE communication are increased by supporting the UE's assisted transmission.

It should be noted that, in this embodiment, the wireless link failure of the benefiting UE is taken as an example. When the radio link supporting the UE fails, the processing procedure is similar to that in this embodiment, and only the UE and the support in this embodiment are benefited. The function of the UE and the steps of execution can be reversed.

Compared with the prior art, after the radio link of the first UE fails and the reestablishment fails, the re-establishment of the radio link is continued to prevent the first UE from entering the idle state; and the first UE passes the short-distance link to the first The second UE sends the keepalive packet, and the second UE forwards the keepalive packet to the base station, preventing the base station from releasing the context of the first UE, thereby preventing the first UE from entering the idle state. Further, in the scenario of multi-user cooperative communication, the problem that the radio link of the first UE fails to enter the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station makes a judgment according to the communication quality of the first UE, which is feasible. In the case of the first UE, switching to another base station prevents communication data from being interrupted and improves the user experience. Another embodiment of the present invention provides a wireless device failure processing device 50. As shown in FIG. 5, the device 50 includes:

a detecting unit 5 1 , configured to detect a radio link failure;

a link reestablishing unit 52, configured to: after the detecting unit 51 detects that the radio link fails, initiate Reconstruction of the wireless link;

The sending unit 53 is configured to send a keep-alive packet to the second UE by using the short-distance link after the link re-establishment unit 52 fails to perform radio link re-establishment, where the keep-alive packet includes at least The keep alive indication information of the context of the first UE, so that the base station reserves the context of the first UE according to the keep-alive indication information.

Further, as shown in FIG. 6, the device 50 may further include:

The timer starting unit 54 is configured to: after the detecting unit 51 detects that the radio link fails, start a first timer, where the first timer is used to perform timing for reestablishing a radio link of the first UE, And causing the first UE to perform N times of radio link reestablishment within a time limit specified by the first timer, until the radio link reestablishment is successful, and the N is an integer greater than or equal to 1.

Further, as shown in FIG. 6, the apparatus 50 may further include: a receiving unit 55, configured to receive an indication message forwarded by the second UE before the sending unit 53 sends a keep-alive packet to the second UE. The indication message is used to instruct the first UE to report the keep-alive packet.

The keep-alive packet sent by the sending unit 53 further includes measurement information of the first UE, and the measurement information of the first UE is used to provide a determination condition for whether the base station needs to switch the first UE.

Compared with the prior art, after the radio link of the first UE fails and the reestablishment fails, the attempt to re-establish the reestablishment of the radio link prevents the first UE from entering the idle state; and sends the second UE to the second UE through the short-distance link. The keep alive packet, the second UE forwards the keepalive packet to the base station, and prevents the base station from releasing the context of the first UE, thereby preventing the first UE from entering the idle state. Further, in the scenario of multi-user cooperative communication, the problem that the radio link of the first UE fails to enter the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station makes a judgment according to the communication quality of the first UE, which is feasible. In the case of the first UE, switching to another base station prevents communication data from being interrupted and improves the user experience. Another embodiment of the present invention provides a processing device 60 for wireless link failure. As shown in FIG. 7, the device 60 includes: The receiving unit 61 is configured to receive a keep-alive packet sent by the first user equipment, where the keep-alive packet includes at least a keep-alive indication information for indicating that the base station reserves the context of the first UE;

The sending unit 62 is configured to send the keep-alive packet received by the receiving unit 61 to the base station, so that the base station reserves the context of the first UE according to the keep-alive indication information.

Optionally, the receiving unit 61 is further configured to: before the timeout of the first timer, receive an indication message periodically sent by the base station, where the indication message is used to instruct the first UE to report the keep-alive packet The first timer is used to perform timing for reestablishing a radio link of the first UE, and the first UE performs N times radio link reestablishment within a time limit specified by the first timer. Until the wireless link is successfully reconstructed, the N is an integer greater than or equal to 1;

The sending unit 62 is further configured to: forward the indication message received by the receiving unit 61 to the first UE by using a short-distance link.

Compared with the prior art, the first UE is prevented from entering the idle state by receiving the keepalive packet sent by the first UE, and forwarding the keepalive packet to the base station, thereby preventing the first UE from entering the idle state; When the first UE continues to try to re-establish the wireless link, the receiving UE periodically sends an indication message that is sent by the base station, and forwards the indication message to the first UE, instructing the first UE to report the keep-alive packet to the base station. Further, in the scenario of multi-user cooperative communication, the problem that the radio link of the first UE fails to enter the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station makes a judgment according to the communication quality of the first UE, which is feasible. In the case of the first UE, switching to another base station prevents communication data from being interrupted and improves the user experience. Another embodiment of the present invention provides a processing device 70 for wireless link failure. As shown in FIG. 8, the device 70 includes:

The receiving unit 71 is configured to receive a keep-alive packet forwarded by the first UE, and the keep-alive packet includes at least a keep-alive indication information for indicating that the base station reserves the context of the first UE.

The processing unit 72 is configured to reserve the context of the first UE according to the keep-alive indication information received by the receiving unit. Further, as shown in FIG. 9, the apparatus 70 shown may further include:

The sending unit 73 is configured to send an indication message to the second UE, to enable the second UE to forward the indication message to the first UE, where the indication message is used to indicate that the first UE reports the Said live bag.

The keep-alive packet received by the receiving unit 71 further includes measurement information of the first UE. Further, as shown in FIG. 9, the apparatus 70 shown may further include:

The switching unit 74 is configured to release the synthetic bearer according to the measurement information of the first UE received by the receiving unit 71 or perform overall handover for the first UE and the second UE.

For example, the processing unit 72 determines the link quality according to the measurement information of the first UE; if the link quality between the first UE and the second UE is less than the first threshold, releasing the composite bearer The first threshold is a standard parameter for measuring the quality of the link; if the link quality between the first UE and the second UE is greater than or equal to the first threshold, the first UE and the second UE are Make an overall switch.

Compared with the prior art, the first UE is processed according to the keep-alive packet reported by the first UE, and according to the information of the keep-alive packet. After the first UE reestablishes the radio link, the context of the first UE is reserved for a period of time, so that the communication of the first UE is not interrupted, and the first UE and the second UE are released by analyzing the link quality. And the integrated bearer formed by the base station or the first UE and the second UE are integrally switched, thereby ensuring the communication quality of the first UE and improving the user experience. Another embodiment of the present invention provides a user equipment 80. As shown in FIG. 10, the user equipment 80 includes:

The processor 81 is configured to detect a radio link failure, and configured to initiate reestablishment of the radio link after detecting that the radio link fails; a transmitter 82, configured to send a keep-alive packet to the second user equipment UE by using a short-distance link after the processor 81 fails to re-establish the radio link, where the keep-alive packet includes at least The keep-alive indication information of the context of the first UE, so that the base station reserves the context of the first UE according to the keep-alive indication information.

Optionally, the processor 81 is further configured to: start, after detecting a failure of the radio link, start a first timer, where the first timer is used to time for reestablishing a radio link of the first UE And performing, by the first UE, N times of radio link reestablishment within a time limit specified by the first timer, until the radio link is successfully reconstructed, where the N is an integer greater than or equal to 1.

Further, as shown in FIG. 1 , the user equipment 80 may further include:

The receiver 8 3 is configured to receive, after the transmitter 82 sends the keep-alive packet to the second UE, an indication message that is forwarded by the second UE, where the indication message is used to indicate that the first UE reports the Said live bag.

The keep-alive packet sent by the transmitter 82 further includes measurement information of the first UE, and the measurement information of the first UE is used to provide a determination condition for whether the base station needs to switch the first UE.

Compared with the prior art, after the radio link fails and the reestablishment fails, the processor 81 continues to try to reestablish the radio link, preventing the first UE from entering the idle state; and through the short-distance link through the transmitter 82. The second UE sends the keepalive packet, and the second UE forwards the keepalive packet to the base station, preventing the base station from releasing the context of the first UE, thereby preventing the first UE from entering the idle state. Further, in the scenario of multi-user cooperative communication, the problem that the radio link of the first UE fails to enter the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station makes a judgment according to the communication quality of the first UE, which is feasible. In the case of the first UE, switching to another base station prevents communication data from being interrupted and improves the user experience. Another embodiment of the present invention provides a user equipment 90. As shown in FIG. 12, the user equipment 90 includes:

The receiver 91 is configured to receive a keep-alive packet sent by the first user equipment UE by using a short-distance link, where the keep-alive packet includes at least a keep-alive indication information for indicating that the base station reserves the context of the first UE; The transmitter 92 is configured to send the keep-alive packet received by the receiver 91 to a base station, so that the base station reserves the context of the first UE according to the keep-alive indication information.

Optionally, the receiver 91 is further configured to: before the timeout of the first timer, receive an indication message periodically sent by the base station, where the indication message is used to instruct the first UE to report the keep-alive packet The first timer is used to perform timing for reestablishing a radio link of the first UE, and the first UE performs N times radio link reestablishment within a time limit specified by the first timer. Until the wireless link is successfully reconstructed, the N is an integer greater than or equal to 1;

The transmitter 92 is further configured to: forward the indication message received by the receiver 91 to the first UE by using a short-distance link.

Compared with the prior art, the receiver 91 receives the keep-alive packet periodically sent by the first UE, and forwards the keep-alive packet to the base station by using the transmitter 92, preventing the base station from releasing the context of the first UE, thereby preventing the first UE. Entering the idle state; optionally, when the first UE continues to try to reestablish the wireless link, the receiver 91 receives the indication message periodically sent by the base station, and forwards the indication message to the first UE by using the transmitter 92, indicating the first The UE reports the keep-alive packet to the base station. Further, in the scenario of multi-user cooperative communication, the problem that the radio link of the first UE fails to enter the idle state immediately after the radio link reestablishment fails, and the base station reports the keep-alive packet to the base station, and the base station makes a judgment according to the communication quality of the first UE, which is feasible. In the case of the first UE, switching to another base station prevents communication data from being interrupted and improves the user experience. Another embodiment of the present invention provides a base station 1000. As shown in FIG. 13 , the base station 1000 includes: a receiver 1001, configured to receive a keep-alive packet reported by the first UE forwarded by the second user equipment UE. The live-keeping packet includes at least a keep-alive indication information indicating that the base station 1000 reserves the context of the first UE;

The processor 1002 is configured to reserve a context of the first UE according to the keep-alive indication information received by the receiver.

Further, as shown in FIG. 14, the base station 1000 may further include:

a transmitter 1003, configured to send an indication message to the second UE, so that the second UE The indication message is forwarded to the first UE, and the indication message is used to indicate that the first UE reports the keep-alive packet.

The keep-alive packet received by the receiver 1 Q 01 further includes measurement information of the first UE. Optionally, the processor 1 002 is further configured to: release the composite carrier according to the measurement information of the first UE, or perform overall handover for the first UE and the second UE.

For example, the processor 1 002 determines the link quality according to the measurement information of the first UE; if the link quality between the first UE and the second UE is less than the first threshold, releasing the synthesis The first threshold is a standard parameter for measuring the quality of the link; if the link quality between the first UE and the second UE is greater than or equal to the first threshold, the first UE and the second The UE performs overall handover.

It should be noted that, in the embodiment of the present invention, the specific decision condition for releasing the composite bearer or for the overall handover of the first UE and the second UE is not limited, and in the actual communication process, the link quality may be Other parameters, or other thresholds for link quality, are judged here.

Compared with the prior art, the first UE is processed according to the keep-alive packet reported by the first UE, and according to the information of the keep-alive packet. After the first UE reestablishes the radio link, the context of the first UE is reserved for a period of time, so that the communication of the first UE is not interrupted, and the first UE and the second UE are released by analyzing the link quality. And the integrated bearer formed by the base station or the first UE and the second UE are integrally switched, thereby ensuring the communication quality of the first UE and improving the user experience.

The apparatus for processing a radio link failure according to the embodiment of the present invention may implement the method provided in the foregoing embodiment. For the specific function implementation, refer to the description in the method embodiment, and details are not described herein again. The method and apparatus for processing a radio link failure provided by the embodiment of the present invention may be applied to a multi-user cooperative communication technology, but is not limited thereto.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only) Memory, ROM) or random access memory (RAM). The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

claims

1. A method for handling wireless link failure, characterized by including:

When the first user equipment UE detects that the wireless link fails, it initiates the re-establishment of the wireless link; if the wireless link re-establishment fails, the first UE sends a keep-alive packet to the second UE through the short-distance link, The keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE, so that the base station retains the context of the first UE according to the keep-alive indication information.

2. The method according to claim 1, characterized in that, after the first user equipment UE detects that the wireless link fails, it further includes:

Start a first timer, the first timer is used to time the reestablishment of the wireless link of the first UE, so that the first UE performs N wireless operations within the time limit specified by the first timer. Link reestablishment, until the wireless link reestablishment is successful, the N is an integer greater than or equal to 1.

3. The method according to claim 1, characterized in that, before the first UE sends the keep-alive packet to the second UE through the short-distance link, it further includes:

Receive an instruction message forwarded by the second UE, where the instruction message is used to instruct the first UE to report the keep-alive packet.

4. The method according to claim 1, characterized in that, the keep-alive packet further includes measurement information of the first UE, and the measurement information of the first UE is used to determine whether the base station needs to switch the The first UE provides decision conditions.

5. A method for handling wireless link failure, characterized by including:

Receive a keep-alive packet sent by the first user equipment UE, where the keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE;

Send the keep-alive packet to the base station, so that the base station retains the context of the first UE according to the keep-alive indication information.

6. The method according to claim 5, characterized in that, before receiving the keep-alive packet sent by the first user equipment UE, it further includes:

Before the first timer times out, receive an instruction message sent periodically by the base station, and the instruction message The information is used to instruct the first UE to report the keep-alive packet, wherein the first timer is used to time the reestablishment of the wireless link of the first UE, so that the first UE can Within a time limit specified by a timer, wireless link reestablishment is performed N times until the wireless link is reestablished successfully, where N is an integer greater than or equal to 1; and the indication message is forwarded to the first UE through a short-distance link.

7. A method for handling wireless link failure, characterized by including:

Receive a keep-alive packet forwarded by the second user equipment UE and reported by the first UE, where the keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE;

The context of the first UE is retained according to the keepalive indication information.

8. The method according to claim 7, characterized in that, the method further includes:

Send an indication message to the second UE, so that the second UE forwards the indication message to the first UE, where the indication message is used to instruct the first UE to report the keep-alive packet.

9. The method according to claim 7, wherein the keep-alive packet further includes measurement information of the first UE;

The method also includes:

Release the synthetic bearer according to the measurement information of the first UE or perform overall handover for the first UE and the second UE.

10. A wireless link failure processing device, characterized in that it includes:

A detection unit used to detect wireless link failure;

A link reestablishment unit, configured to initiate reestablishment of the wireless link when the detection unit detects a wireless link failure;

A sending unit, configured to send a keep-alive packet to the second UE through a short-distance link after the link re-establishment unit fails to re-establish the wireless link. The keep-alive packet at least includes instructions for instructing the base station to retain the first UE. Keep-alive indication information of the context of the UE, so that the base station retains the context of the first UE according to the keep-alive indication information.

11. The device according to claim 10, characterized in that, the device further includes: a timer starting unit, configured to start the first timer when the detection unit detects a wireless link failure. timer, the first timer is used to time the reestablishment of the wireless link of the first UE, so that the first UE can perform N times of wireless link reestablishment within the time limit specified by the first timer. , until the wireless link is reestablished successfully, and N is an integer greater than or equal to 1.

12. The device according to claim 10, characterized in that, the device further includes: a receiving unit, configured to receive the instruction forwarded by the second UE before the sending unit sends the keep-alive packet to the second UE. message, the indication message is used to instruct the first UE to report the keep-alive packet.

13. The apparatus according to claim 10, characterized in that, the keep-alive packet sent by the sending unit further includes measurement information of the first UE, and the measurement information of the first UE is used for the Whether the base station needs to switch the first UE provides a decision condition.

14. A wireless link failure processing device, characterized in that it includes:

A receiving unit configured to receive a keep-alive packet sent by the first user equipment UE, where the keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE;

A sending unit, configured to send the keep-alive packet received by the receiving unit to the base station, so that the base station retains the context of the first UE according to the keep-alive indication information.

15. The device according to claim 14, wherein the receiving unit is further configured to: receive an indication message periodically sent by the base station before the first timer times out, the indication message being used to indicate the The first UE reports the keep-alive packet, wherein the first timer is used to time the reestablishment of the wireless link of the first UE, so that the first UE will be in the time specified by the first timer. Within the time limit, wireless link reestablishment is performed N times until the wireless link is reestablished successfully, and N is an integer greater than or equal to 1; then the sending unit is also used to:

The indication message received by the receiving unit is forwarded to the first UE through a short-distance link.

16. A wireless link failure processing device, characterized in that it includes:

A receiving unit configured to receive a keep-alive packet forwarded by the second user equipment UE and reported by the first UE, where the keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE;

A processing unit, configured to retain the context of the first UE according to the keep-alive indication information received by the receiving unit.

17. The device according to claim 16, characterized in that the device further includes: a sending unit, configured to send an indication message to the second UE, so that the second UE forwards the indication message to For the first UE, the instruction message is used to instruct the first UE to report the keep-alive packet.

18. The apparatus according to claim 17, wherein the keep-alive packet received by the receiving unit further includes measurement information of the first UE.

19. The device according to claim 18, characterized in that, the device further includes: a switching unit, configured to release the synthetic bearer according to the measurement information of the first UE received by the receiving unit or to provide the first UE and The second UE performs overall handover.

20. A user equipment, characterized by: including:

The processor is used to detect wireless link failure; and, when detecting wireless link failure, initiates the reestablishment of the wireless link;

A transmitter configured to send a keep-alive packet to the second user equipment UE through a short-distance link after the processor fails to reestablish the wireless link, where the keep-alive packet at least includes instructions for instructing the base station to retain the first user equipment UE. Keep-alive indication information of the context of the UE, so that the base station retains the context of the first UE according to the keep-alive indication information.

21. The user equipment according to claim 20, wherein the processor is further configured to: when detecting a wireless link failure, start a first timer, and the first timer is used to set the time limit for the first timer. The wireless link reestablishment of a UE is timed so that the first UE performs wireless link reestablishment N times within the time limit specified by the first timer until the wireless link is reestablished successfully, and N is greater than or equal to an integer of 1.

22. The user equipment according to claim 20, characterized in that, the user equipment further includes: a receiver, configured to receive the forwarding of the keep-alive packet by the second UE before the sender sends the keep-alive packet to the second UE. The instruction message is used to instruct the first UE to report the keep-alive packet.

23. The user equipment according to claim 20, wherein the keep-alive packet sent by the transmitter further includes measurement information of the first UE, and the measurement information of the first UE is used for the Whether the base station needs to switch the first UE provides a decision condition.

24. A user equipment, characterized by: including: A receiver configured to receive a keep-alive packet sent by the first user equipment UE through the short-distance link, where the keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE;

The transmitter is configured to send the keep-alive packet received by the receiver to the base station, so that the base station retains the context of the first UE according to the keep-alive indication information.

25. The user equipment according to claim 24, characterized in that the receiver is further configured to: receive an instruction message periodically sent by the base station before the first timer times out, the instruction message is used to indicate The first UE reports the keep-alive packet, wherein the first timer is used to time the reestablishment of the wireless link of the first UE, so that the first UE is specified by the first timer. Within a time limit of

The indication message received by the receiver is forwarded to the first UE through a short-distance link.

26. A base station, characterized by: including:

A receiver, configured to receive a keep-alive packet reported by the first UE and forwarded by the second user equipment UE, where the keep-alive packet at least includes keep-alive indication information used to instruct the base station to retain the context of the first UE; A processor, retaining the context of the first UE according to the keepalive indication information received by the receiver.

27. The base station according to claim 26, characterized in that, the base station further includes: a transmitter, configured to send an indication message to the second UE, so that the second UE forwards the indication message to For the first UE, the instruction message is used to instruct the first UE to report the keep-alive packet.

28. The base station according to claim 26, wherein the keep-alive packet received by the receiver further includes measurement information of the first UE.

29. The base station according to claim 28, wherein the processor is further configured to: release a synthetic bearer according to the measurement information of the first UE or perform overall handover for the first UE and the second UE.