CN107613507A - A kind of processing method of link failure, equipment and system - Google Patents
A kind of processing method of link failure, equipment and system Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of processing method of link failure, equipment and system, this method can apply under the multi-hop communication system framework of super-intensive network UDN technological accumulation and inheritances, and the via node in any Radio Link, methods described includes：The working condition of Radio Link where the via node monitoring；Where the via node detects during radio link failure, radio link failure message is sent to neighbouring all access devices；Wherein, the radio link failure message, for notifying neighbouring all access devices to select new route and/or new access cell.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a method, a device, and a system for processing a link failure.
Background
Ultra Dense Network (UDN) technology can reduce the Access distance of users by the scale deployment of wireless Access Points (APs), thereby improving the throughput of an area and satisfying capacity requirements. In the process of deploying wireless APs on a large scale, in order to meet the requirements of high traffic and wide coverage, and in order to provide stable high-rate transmission service, the wireless APs usually communicate by forming a multi-hop wireless communication system. In a wireless communication system of multi-hop relay, a wireless link between a user equipment and a relay node is called an Access link (Access link); links between the relay nodes and the base station are called wireless backhaul links (wireless backhaul); the wireless link between the user equipment and the base station is called a wireless direct transfer link.
However, in the multi-hop wireless communication of the ultra-dense network, when a certain access node fails or a certain hop backhaul link fails to communicate due to object occlusion, the neighboring user equipment and/or the neighboring access node may still wait for receiving or requesting uplink resources or performing initial access on the failed link, and therefore redundant signaling may be generated and the time delay for the user equipment and/or other access nodes to obtain network services may also be increased.
Disclosure of Invention
In order to solve the foregoing technical problems, embodiments of the present invention desirably provide a method, device, and system for processing a link failure, which can avoid generating a redundant signaling when a link fails, and reduce a time delay for a user equipment and/or other access nodes to obtain a network service.
The technical scheme of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for processing a link failure, where the method is applied to a multi-hop communication system architecture in an ultra dense network UDN technical environment, and a relay node in any wireless link, and the method includes:
the relay node monitors the working state of the wireless link; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node;
when the relay node detects that the wireless link is failed, the relay node sends a wireless link failure message to all adjacent access equipment; wherein the radio link failure message is used to inform all the access devices in the vicinity to select a new route and/or a new access cell.
In the above scheme, the monitoring, by the relay node, the working state of the wireless link where the relay node is located includes: the relay node monitors the effective state of the adjacent backhaul link of the relay node, or the relay node monitors the working state of the adjacent wireless access node in the wireless link where the relay node is located.
In the above scheme, when the relay node detects that the located wireless link is failed, the sending of the wireless link failure message to all neighboring access devices includes:
and after detecting that the adjacent backhaul link and/or other adjacent wireless relay nodes in the wireless link where the relay node is located are in a failure state, the relay node broadcasts the wireless link failure message to all the access devices adjacent to the relay node.
In the above scheme, when the relay node detects that the located wireless link is failed, the sending of the wireless link failure message to all neighboring access devices includes:
after detecting that the adjacent wireless access nodes in the self adjacent backhaul link and/or the self located wireless link are in a failure state, the relay node broadcasts the wireless link failure message to all self adjacent access equipment in a non-connection state;
and sending a dedicated control signaling carrying the radio link failure message to all the access equipment in the connection state adjacent to the access equipment.
In the above scheme, the radio link failure message specifically includes at least one of the following:
the wireless access point AP identification in a failure state in the wireless link where the relay node is located, and/or the route identification in a failure state of the backhaul link in the wireless link where the relay node is located, the cell identification in a failure state in the wireless link where the relay node is located, and the reason information for performing route update and/or cell update.
In a second aspect, an embodiment of the present invention provides a method for processing a link failure, where the method is applied to an access device adjacent to a relay node in any wireless link in a multi-hop communication system architecture in an ultra dense network UDN technical environment, and the method includes:
the access equipment receives a wireless link failure message sent by the relay node; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node; the radio link failure message is used for informing the access equipment to select a new route and/or a new access cell;
and the access equipment selects a new route and/or a new access cell according to the wireless link failure message.
In the above scheme, the receiving, by the access device, a radio link failure message sent by the relay node includes:
the access device listens for the radio link failure message broadcast by the relay node.
In the above scheme, the receiving, by the access device, a radio link failure message sent by the relay node includes:
the access equipment in the non-connection state monitors the radio link failure message broadcast by the relay node; or, the access device in the connection state receives a dedicated control signaling which is sent by the relay node and carries the radio link failure message.
In the above scheme, the radio link failure message specifically includes at least one of the following:
the wireless access point AP identification in a failure state in the wireless link where the relay node is located, and/or the route identification in a failure state of the backhaul link in the wireless link where the relay node is located, the cell identification in a failure state in the wireless link where the relay node is located, and the reason information for performing route update and/or cell update.
In the above solution, the selecting, by the access device, a new route and/or a new access cell according to the radio link failure message includes:
after receiving the radio link failure message, the access device stops waiting for receiving or requesting uplink resources on the existing radio link, or stops initiating an initial access process on the existing radio link;
and the access equipment selects a new route and/or a new access cell according to the wireless link failure information.
In a third aspect, an embodiment of the present invention provides a relay node, where the relay node includes: the monitoring module and the sending module; wherein,
the monitoring module is used for monitoring the working state of the wireless link where the relay node is located; when the wireless link where the wireless link is located is detected to be invalid, the sending module is triggered; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node;
the sending module is configured to send a radio link failure message to all access devices adjacent to the relay node; wherein the radio link failure message is used to inform all the access devices in the vicinity to select a new route and/or a new access cell.
In the foregoing solution, the monitoring module is configured to monitor an effective state of a backhaul link adjacent to the relay node, or monitor an operating state of a wireless access node adjacent to the relay node in a wireless link where the relay node is located.
In the foregoing solution, the sending module is configured to broadcast the radio link failure message to all access devices in the vicinity of the relay node.
In the foregoing scheme, the sending module is configured to
Broadcasting the radio link failure message to all access equipment in a non-connection state adjacent to the relay node;
and sending a dedicated control signaling carrying the radio link failure message to all the access equipment in the connection state adjacent to the relay node.
In a fourth aspect, an embodiment of the present invention provides an access device, where the access device includes a receiving module and a reselection module; wherein,
the receiving module is used for receiving a wireless link failure message sent by the relay node; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node; the radio link failure message is used for informing the access equipment to select a new route and/or a new access cell;
and the reselection module is used for selecting a new route and/or a new access cell according to the wireless link failure message.
In the foregoing solution, the receiving module is configured to listen to the radio link failure message broadcast by the relay node.
In the foregoing scheme, the receiving module is configured to:
monitoring the radio link failure message broadcast by the relay node when the access device is in a non-connected state;
or, when the access device is in a connected state, receiving a dedicated control signaling carrying the radio link failure message and sent by the relay node.
In the above scheme, the reselection module is configured to stop waiting for receiving or requesting uplink resources on an existing wireless link, or stop initiating an initial access procedure on the existing wireless link; and the number of the first and second groups,
and selecting a new route and/or a new access cell according to the wireless link failure information.
In a fifth aspect, an embodiment of the present invention provides a system for processing a link failure, where the system includes a relay node in any wireless link and an access device adjacent to the relay node in a multi-hop communication system architecture in an ultra dense network UDN technical environment; wherein,
the relay node is used for monitoring the working state of the wireless link; the wireless link includes: a wireless backhaul link and a wireless relay node;
when detecting that the wireless link is invalid, sending a wireless link invalid message to all adjacent access equipment; wherein, the radio link failure message is used for notifying all the access devices adjacent to the radio link failure message to select a new route and/or a new access cell;
the access device is configured to receive the radio link failure message sent by the relay node;
and selecting a new route and/or a new access cell according to the wireless link failure message.
The embodiment of the invention provides a method, equipment and a system for processing link failure, wherein a relay node sends a wireless link failure message to all adjacent access equipment after detecting that a link where the relay node is located is failed, so that the adjacent access equipment can know that the link where the relay node is located is failed and then reselect a new route and/or a new access cell, thereby avoiding the situation that the adjacent access equipment continuously waits for receiving or requesting uplink resources on the original link or continuously initiates an initial access process, and reducing the time delay of network service.
Drawings
Fig. 1 is a schematic architecture diagram of a multi-hop communication system in a UDN technology environment according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a link failure processing flow provided in the prior art;
fig. 3 is a detailed flowchart of a method for processing a link failure according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of selecting a new route and/or a new access cell by an access device according to an embodiment of the present invention
Fig. 5 is a schematic flow chart of a method for processing a link failure according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of another link failure processing method according to an embodiment of the present invention;
fig. 7 is a schematic flowchart of another access device selecting a new route and/or a new access cell according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a relay node according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an access device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a processing system for link failure according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, a schematic structural diagram of a multi-hop communication system in a UDN technical environment is provided, in which network elements are connected by wireless communication links, and a hierarchy of a network architecture is divided according to the number of hops from a wireless access point to a macro station. The embodiment of the present invention explains the technical solution by taking a three-layer network architecture shown in the schematic diagram as an example. It should be understood that the network architecture shown in fig. 1 is only used for illustrating the technical solution in the embodiment, and is not limited in particular, and those skilled in the art may apply the technical solution in the embodiment of the present invention to other multi-layer network architectures in the UDN technical environment.
Taking the system architecture shown in fig. 1 as an example, in the prior art, when a first relay node in a certain wireless link in a network architecture detects that a link where the first relay node is located fails, for example, a certain hop backhaul link in the link where the first relay node is located fails or other wireless relay nodes in a certain hop of the link where the first relay node is located fails, the first relay node may schedule, by sending a dedicated control signaling, a neighboring user equipment and/or a wireless access node to select a new route and/or a new cell; or the first relay node does not send dedicated control signalling to neighbouring user equipments and/or radio access nodes.
According to the two possible ways of the first relay node, it should be noted that:
for the first way, when the first relay node schedules the neighboring user equipment and/or radio access node to select a new route and/or a new cell by sending the dedicated control signaling, the user equipment or radio access node in the non-connected state neighboring the first relay node cannot acquire the dedicated control signaling, and thus cannot know the condition of the radio backhaul link, and therefore, the neighboring user equipment or relay node in the non-connected state will continuously initiate the initial access process.
For the second way, as shown in fig. 2, when the first relay node does not send dedicated control signaling to the neighboring user equipment and/or the wireless access node, the neighboring user equipment and/or the wireless access node may continue to wait for receiving or requesting uplink resources or continuously initiate an initial access procedure because the neighboring user equipment and/or the wireless access node cannot know the condition of the wireless backhaul link.
Due to link failure, the neighboring user equipment and/or the wireless access node continuously and repeatedly wait for receiving or requesting uplink resources until the reception time-out is reached or the maximum resource application times are reached, and the communication is stopped, so that more redundant signaling is generated in the network; or the neighboring user equipment and/or the radio access node may continuously initiate the initial access procedure until the communication is terminated after the maximum access times are reached, which may result in a large access delay.
Therefore, according to the above situation, in the prior art, under the multi-hop communication system architecture of the UDN technical environment, the first relay node cannot notify the neighboring user equipment or wireless access node in the non-connected state of the link failure, or cannot notify all the neighboring user equipment and/or wireless access node of the link failure. These all result in more redundant signaling in the network and larger access delays.
In view of the problems existing in the prior art, the basic idea of the embodiment of the present invention is: the relay node notifies the link failure state to all the adjacent access equipment, so that the adjacent access equipment can be prevented from continuously waiting for receiving or requesting uplink resources or continuously initiating an initial access process, and the time delay of the adjacent access equipment for obtaining network service is reduced.
Example one
Based on the basic idea of the foregoing embodiment of the present invention, referring to fig. 3, it shows a flow of a method for processing a link failure according to the embodiment of the present invention, where the flow may be applied to a relay node in any wireless link and an access device adjacent to the relay node, where it should be noted that the access device may be a wireless access node accessing the relay node, or may be a user equipment accessing the relay node, and the flow may include:
s301: the relay node monitors the working state of the wireless link;
s302: when the relay node detects that the wireless link is failed, the relay node sends a wireless link failure message to all adjacent access equipment;
wherein the radio link failure message is used to inform the neighboring access equipment to select a new route and/or a new access cell.
S303: and the access equipment selects a new route and/or a new access cell according to the wireless link failure message.
It can be understood that, according to the process shown in fig. 3, after detecting that the link where the relay node is located is failed, the relay node sends a wireless link failure message to all neighboring access devices, so that the neighboring access devices can know that the link where the relay node is located is failed, and then reselect a new route and/or a new access cell, thereby avoiding that the neighboring access devices continue to wait for receiving or requesting uplink resources on the original link, or continuously initiate an initial access process, and reducing the delay of network service.
Illustratively, the wireless link includes: a wireless backhaul link and a wireless relay node; therefore, the monitoring of the working state of the wireless link by the relay node may include: the relay node monitors the effective state of the adjacent backhaul link of the relay node, or the relay node monitors the working state of the adjacent wireless access node in the wireless link.
Preferably, in a specific implementation process, the relay node may monitor the working state of the adjacent backhaul link or the adjacent wireless access node in the wireless link by sending a detection signal to the wireless link where the relay node is located, and may also receive link state parameter information transmitted by the relay node of the adjacent hop number to obtain the working state of the adjacent backhaul link or the adjacent wireless access node in the wireless link; this embodiment is not specifically limited, and a person skilled in the art may monitor the working state of the wireless link where the relay node is located through an existing technology, which is not described in detail in this embodiment.
For example, in step S302, optionally, when the relay node detects that the located radio link fails, sending a radio link failure message to all neighboring access devices may include:
after detecting that the adjacent backhaul link and/or other adjacent wireless relay nodes in the wireless link where the relay node is located are in a failure state, the relay node broadcasts a wireless link failure message to all the access devices adjacent to the relay node.
Optionally, when the relay node detects that the located wireless link is failed, sending a wireless link failure message to all neighboring access devices may include:
after detecting that the adjacent wireless access nodes in the self adjacent backhaul link and/or the self located wireless link are in the failure state, the relay node broadcasts a wireless link failure message to all self adjacent access devices in the non-connection state, and sends a special control signaling carrying the wireless link failure message to all self adjacent access devices in the connection state.
It is to be understood that the non-connected state may include an idle state, or an initial access state.
Illustratively, the radio link failure message may specifically include at least one of the following:
the relay node comprises information such as an Access Point (AP) identifier in a failure state in a wireless link where the relay node is located, and/or a route identifier in a failure state of a backhaul link in a wireless link where the relay node is located, a cell identifier in a failure state in a wireless link where the relay node is located, and a reason for performing route update and/or cell update. It can be understood that all information capable of notifying the access device in the vicinity of the relay node to select the new route and/or the new access cell may be included in the radio link failure message, which is not specifically defined and described in this embodiment.
For example, referring to fig. 4, in step S303, the selecting, by the access device, a new route and/or a new access cell according to the radio link failure message may specifically include:
s3031: after receiving the wireless link failure message, the access device stops waiting for receiving or requesting uplink resources on the existing wireless link, or stops initiating an initial access process on the existing wireless link;
s3032: and the access equipment selects a new route and/or a new access cell according to the wireless link failure information.
The present embodiment provides a process of a link failure processing method, in which a relay node sends a wireless link failure message to all neighboring access devices after detecting that a link where the relay node is located is failed, so that the neighboring access devices can know that the link where the relay node is located is failed, and then reselect a new route and/or a new access cell, thereby avoiding that the neighboring access devices continue to wait for receiving or requesting uplink resources on the original link, or continuously initiate an initial access process, and reducing a time delay of a network service.
Example two
Based on the same technical concept as the foregoing embodiment, referring to fig. 5, which illustrates a method for processing a link failure according to an embodiment of the present invention, where the method may be applied to a relay node in any wireless link in a multi-hop communication system architecture in a UDN technical environment, and the method may include:
s501: the relay node monitors the working state of the wireless link;
s502: when the relay node detects that the wireless link is failed, the relay node sends a wireless link failure message to all adjacent access equipment;
wherein the radio link failure message is used to inform the neighboring access equipment to select a new route and/or a new access cell.
It can be understood that, in this embodiment, after detecting that the located radio link is failed, the relay node sends a radio link failure message to all neighboring access devices, so that the neighboring access devices can learn that the link where the relay node is located is failed, and then reselect a new route and/or a new access cell, thereby avoiding that the neighboring access devices continue to wait for receiving or requesting uplink resources on the original link, or continuously initiate an initial access process, and reducing the delay of network service.
Illustratively, the monitoring of the working state of the wireless link by the relay node may include: the relay node monitors the effective state of the adjacent backhaul link of the relay node, or the relay node monitors the working state of the adjacent wireless access node in the wireless link.
Optionally, when the relay node detects that the located wireless link is failed, sending a wireless link failure message to all neighboring access devices may include:
after detecting that the adjacent backhaul link and/or other adjacent wireless relay nodes in the wireless link where the relay node is located are in a failure state, the relay node broadcasts a wireless link failure message to all the access devices adjacent to the relay node.
Optionally, when the relay node detects that the located wireless link is failed, sending a wireless link failure message to all neighboring access devices may include:
after detecting that the adjacent backhaul link and/or the adjacent wireless access node in the wireless link where the relay node is located are in a failure state, the relay node broadcasts a wireless link failure message to all the access devices which are adjacent to the relay node and are in a non-connection state;
or sending a special control signaling carrying a radio link failure message to all the access equipment in the connection state in the vicinity of the access equipment.
It is to be understood that the non-connected state may include an idle state, or an initial access state.
Illustratively, the radio link failure message may specifically include at least one of the following:
the relay node comprises information such as an Access Point (AP) identifier in a failure state in a wireless link where the relay node is located, and/or a route identifier in a failure state of a backhaul link in a wireless link where the relay node is located, a cell identifier in a failure state in a wireless link where the relay node is located, and a reason for performing route update and/or cell update. It can be understood that all information capable of notifying the access device in the vicinity of the relay node to select the new route and/or the new access cell may be included in the radio link failure message, which is not specifically defined and described in this embodiment.
The embodiment provides a method for processing link failure, in which a relay node sends a wireless link failure message to all neighboring access devices after detecting that a link where the relay node is located is failed, so that the neighboring access devices can know that the link where the relay node is located is failed, and then reselect a new route and/or a new access cell, thereby avoiding that the neighboring access devices continue to wait for receiving or requesting uplink resources on the original link or continuously initiate an initial access process, and reducing the time delay of network service.
EXAMPLE III
Based on the same technical concept as the foregoing embodiment, referring to fig. 6, another link failure processing method provided by the embodiment of the present invention is shown, and the method may be applied to an access device adjacent to a relay node in any wireless link in a multi-hop communication system architecture in a UDN technical environment, where the access device may be a wireless access node accessing the relay node, and may also be a user equipment accessing the relay node, and the method may include:
s601: the access equipment receives a wireless link failure message sent by the relay node;
wherein the wireless link comprises: a wireless backhaul link and a wireless relay node; the radio link failure message is therefore used to inform the access device to select a new route and/or a new access cell.
S602: and the access equipment selects a new route and/or a new access cell according to the wireless link failure message.
Optionally, the receiving, by the access device, the radio link failure message sent by the relay node may include:
the access device listens for radio link failure messages broadcast by the relay node.
Optionally, the receiving, by the access device, the radio link failure message sent by the relay node may include:
the access equipment in the non-connection state monitors a wireless link failure message broadcast by the relay node; or, the access equipment in the connection state receives the special control signaling which is sent by the relay node and carries the radio link failure message.
It is to be understood that the aforementioned non-connection state may include an idle state, or an initial access state.
Illustratively, the radio link failure message may specifically include at least one of the following:
the relay node comprises information such as an Access Point (AP) identifier in a failure state in a wireless link where the relay node is located, and/or a route identifier in a failure state of a backhaul link in a wireless link where the relay node is located, a cell identifier in a failure state in a wireless link where the relay node is located, and a reason for performing route update and/or cell update.
Illustratively, referring to fig. 7, the access device selects a new route and/or a new access cell according to the radio link failure message, which may specifically include steps S6021 and S6022:
s6021: after receiving the wireless link failure message, the access device stops waiting for receiving or requesting uplink resources on the existing wireless link, or stops initiating an initial access process on the existing wireless link;
s6022: and the access equipment selects a new route and/or a new access cell according to the wireless link failure information.
In this embodiment, after receiving a radio link failure message sent by a relay node, all access devices adjacent to the relay node reselect a new route and/or a new access cell, which avoids that the adjacent access devices continue to wait for receiving or requesting uplink resources on the original link or continuously initiate an initial access process, and reduces the delay of network service.
Example four
Based on the same technical concept as the foregoing embodiment, referring to fig. 8, which shows a structure of a relay node 80 provided in an embodiment of the present invention, in this embodiment, the relay node 80 may be a relay node 80 in any wireless link under a multi-hop communication system architecture in a UDN technical environment, and specifically includes: a monitoring module 801 and a sending module 802; wherein,
the monitoring module 801 is configured to monitor a working state of a wireless link where the relay node 80 is located; when detecting that the wireless link is in failure, triggering the sending module 802;
the sending module 802 is configured to send a radio link failure message to all access devices in the vicinity of the relay node 80; wherein the radio link failure message is used to inform all the access devices in the vicinity to select a new route and/or a new access cell.
In the above scheme, the monitoring module 801 is configured to monitor an effective state of a backhaul link adjacent to the relay node 80, or monitor an operating state of a wireless access node adjacent to the relay node 80 in a wireless link in which the relay node 80 is located.
In the above solution, the sending module 802 is configured to broadcast the radio link failure message to all access devices in the vicinity of the relay node 80.
In the above scheme, the sending module 802 is configured to send the request message to the ue
Broadcasting the radio link failure message to all access devices in a non-connected state in the vicinity of the relay node 80;
and sending a dedicated control signaling carrying the radio link failure message to all connected access devices in the vicinity of the relay node 80.
EXAMPLE five
Based on the same technical concept as the foregoing embodiment, referring to fig. 9, which shows a structure of an access device 90 provided in an embodiment of the present invention, in this embodiment, the access device 90 may be an access device 90 adjacent to a relay node in any wireless link under a multi-hop communication system architecture in a UDN technical environment, specifically, the access device 90 may be a wireless access node accessing the relay node, and may also be a user equipment accessing the relay node, and therefore, the access device 90 may include: a receiving module 901 and a reselection module 902; wherein,
the receiving module 901 is configured to receive a radio link failure message sent by a relay node; wherein, the radio link failure message is used to inform the access device 90 to select a new route and/or a new access cell;
the reselection module 902 is configured to select a new route and/or a new access cell according to the radio link failure message.
In the above solution, the receiving module 901 is configured to listen to the radio link failure message broadcast by the relay node.
In the foregoing scheme, the receiving module 901 is configured to:
monitoring the radio link failure message broadcast by the relay node when the access device 90 is in a non-connected state;
or, when the access device 90 is in the connected state, receiving a dedicated control signaling carrying the radio link failure message and sent by the relay node.
In the above solution, the reselection module 902 is configured to stop waiting for receiving or requesting uplink resources on an existing wireless link, or stop initiating an initial access procedure on the existing wireless link; and the number of the first and second groups,
and selecting a new route and/or a new access cell according to the wireless link failure information.
EXAMPLE six
Based on the same technical concept as the foregoing embodiment, referring to fig. 10, a system 100 for processing a link failure according to an embodiment of the present invention is shown, and the system may include: under a multi-hop communication system architecture of an ultra dense network UDN technical environment, a relay node 80 in any wireless link and an access device 90 adjacent to the relay node 80; wherein,
the relay node 80 is configured to monitor a working state of the wireless link where the relay node is located;
and when detecting that the wireless link is failed, sending a wireless link failure message to all the adjacent access devices 90; wherein, the radio link failure message is used to inform all the access devices 90 in the vicinity of selecting a new route and/or a new access cell;
the access device 90 is configured to receive the radio link failure message sent by the relay node 80;
and selecting a new route and/or a new access cell according to the wireless link failure message.
In the system 100 for processing link failure provided in this embodiment, after detecting that the link where the relay node 80 is located is failed, the relay node 80 sends a wireless link failure message to all the neighboring access devices 90, so that the neighboring access devices 90 can know that the link where the relay node 80 is located is failed, and then reselect a new route and/or a new access cell, thereby avoiding that the neighboring access devices 90 continue to wait for receiving or requesting uplink resources on the original link, or continuously initiate an initial access process, and reducing the time delay of network service.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (19)
1. A method for processing link failure is applied to a relay node in any wireless link under a multi-hop communication system architecture in an Ultra Dense Network (UDN) technical environment, and comprises the following steps:
the relay node monitors the working state of the wireless link; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node;
when the relay node detects that the wireless link is failed, the relay node sends a wireless link failure message to all adjacent access equipment; wherein the radio link failure message is used to inform all the access devices in the vicinity to select a new route and/or a new access cell.
2. The method of claim 1, wherein the monitoring of the working status of the wireless link by the relay node comprises: the relay node monitors the effective state of the adjacent backhaul link of the relay node, or the relay node monitors the working state of the adjacent wireless access node in the wireless link where the relay node is located.
3. The method of claim 1, wherein when the relay node detects that the located radio link is failed, the method sends a radio link failure message to all neighboring access devices, and includes:
and after detecting that the adjacent backhaul link and/or other adjacent wireless relay nodes in the wireless link where the relay node is located are in a failure state, the relay node broadcasts the wireless link failure message to all the access devices adjacent to the relay node.
4. The method of claim 1, wherein when the relay node detects that the located radio link is failed, the method sends a radio link failure message to all neighboring access devices, and includes:
after detecting that the adjacent wireless access nodes in the self adjacent backhaul link and/or the self located wireless link are in a failure state, the relay node broadcasts the wireless link failure message to all self adjacent access equipment in a non-connection state;
and sending a dedicated control signaling carrying the radio link failure message to all the access equipment in the connection state adjacent to the access equipment.
5. The method according to claim 1, wherein the radio link failure message specifically includes at least one of:
the wireless access point AP identification in a failure state in the wireless link where the relay node is located, and/or the route identification in a failure state of the backhaul link in the wireless link where the relay node is located, the cell identification in a failure state in the wireless link where the relay node is located, and the reason information for performing route update and/or cell update.
6. A method for processing link failure is applied to an access device adjacent to a relay node in any wireless link under a multi-hop communication system architecture in an Ultra Dense Network (UDN) technical environment, and comprises the following steps:
the access equipment receives a wireless link failure message sent by the relay node; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node; the radio link failure message is used for informing the access equipment to select a new route and/or a new access cell;
and the access equipment selects a new route and/or a new access cell according to the wireless link failure message.
7. The method of claim 6, wherein the access device receives the radio link failure message sent by the relay node, and comprises:
the access device listens for the radio link failure message broadcast by the relay node.
8. The method of claim 6, wherein the access device receives the radio link failure message sent by the relay node, and comprises:
the access equipment in the non-connection state monitors the radio link failure message broadcast by the relay node; or, the access device in the connection state receives a dedicated control signaling which is sent by the relay node and carries the radio link failure message.
9. The method according to claim 6, wherein the radio link failure message specifically includes at least one of:
the wireless access point AP identification in a failure state in the wireless link where the relay node is located, and/or the route identification in a failure state of the backhaul link in the wireless link where the relay node is located, the cell identification in a failure state in the wireless link where the relay node is located, and the reason information for performing route update and/or cell update.
10. The method of claim 6, wherein the selecting, by the access device, a new route and/or a new access cell according to the radio link failure message comprises:
after receiving the radio link failure message, the access device stops waiting for receiving or requesting uplink resources on the existing radio link, or stops initiating an initial access process on the existing radio link;
and the access equipment selects a new route and/or a new access cell according to the wireless link failure information.
11. A relay node, characterized in that the relay node comprises: the monitoring module and the sending module; wherein,
the monitoring module is used for monitoring the working state of the wireless link where the relay node is located; when the wireless link where the wireless link is located is detected to be invalid, the sending module is triggered; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node;
the sending module is configured to send a radio link failure message to all access devices adjacent to the relay node; wherein the radio link failure message is used to inform all the access devices in the vicinity to select a new route and/or a new access cell.
12. The relay node according to claim 11, wherein the monitoring module is configured to monitor an effective status of a backhaul link adjacent to the relay node, or monitor an operating status of a radio access node adjacent to the relay node in a radio link in which the relay node is located.
13. The relay node of claim 11, wherein the sending module is configured to broadcast the radio link failure message to all access devices in the vicinity of the relay node.
14. The relay node of claim 11, wherein the sending module is configured to send the information to the relay node
Broadcasting the radio link failure message to all access equipment in a non-connection state adjacent to the relay node;
and sending a dedicated control signaling carrying the radio link failure message to all the access equipment in the connection state adjacent to the relay node.
15. An access device, comprising a receiving module and a reselection module; wherein,
the receiving module is used for receiving a wireless link failure message sent by the relay node; wherein the wireless link comprises: a wireless backhaul link and a wireless relay node; the radio link failure message is used for informing the access equipment to select a new route and/or a new access cell;
and the reselection module is used for selecting a new route and/or a new access cell according to the wireless link failure message.
16. The access device of claim 15, wherein the receiving module is configured to listen for the radio link failure message broadcast by the relay node.
17. The access device of claim 15, wherein the receiving module is configured to:
monitoring the radio link failure message broadcast by the relay node when the access device is in a non-connected state;
or, when the access device is in a connected state, receiving a dedicated control signaling carrying the radio link failure message and sent by the relay node.
18. The access device of claim 15, wherein the reselection module is configured to stop waiting to receive or request uplink resources on an existing wireless link, or stop initiating an initial access procedure on an existing wireless link; and the number of the first and second groups,
and selecting a new route and/or a new access cell according to the wireless link failure information.
19. A processing system for link failure is characterized in that the system comprises a relay node in any wireless link and an access device adjacent to the relay node under a multi-hop communication system architecture of an Ultra Dense Network (UDN) technical environment; wherein,
the relay node is used for monitoring the working state of the wireless link; the wireless link includes: a wireless backhaul link and a wireless relay node;
when detecting that the wireless link is invalid, sending a wireless link invalid message to all adjacent access equipment; wherein, the radio link failure message is used for notifying all the access devices adjacent to the radio link failure message to select a new route and/or a new access cell;
the access device is configured to receive the radio link failure message sent by the relay node;
and selecting a new route and/or a new access cell according to the wireless link failure message.
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| CN201610548950.7A CN107613507A (en) | 2016-07-12 | 2016-07-12 | A kind of processing method of link failure, equipment and system |
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| CN201610548950.7A CN107613507A (en) | 2016-07-12 | 2016-07-12 | A kind of processing method of link failure, equipment and system |
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