ADAPTIVE MANAGEMENT METHOD FOR WIRELESS TRANSFER NETWORK CONTAINING BASE STATION AND WIRELESS RELAY STATIONS

• US 20100046396A1
• Filed: 12/10/2007
• Published: 02/25/2010
• Est. Priority Date: 04/13/2007
• Status: Abandoned Application

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Xu, Ling, Cai, Sean
• Application Number:
  US12/595,629
• Publication Number:
  US 20100046396A1
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 40/248 Connectivity information update
• CPC Class Codes: H04W 84/047 using dedicated repeater stations
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

An adaptive management method for a wireless communication network comprising a base station and wireless relay stations is disclosed, and the method is applied in a wireless communication network group comprising a base station and wireless relay stations subordinated to the base station. The method comprises the following steps of: (a) a management node in the wireless communication network group constructing a wireless network topology information structure of the group; (b) the management node updating the wireless network topology information of the group when a network topology relationship of the wireless communication network group changes; (c) the management node utilizing the wireless network topology information of the group and a corresponding strategy to manage wireless relay stations and mobile terminals subordinated to the management node.

Claims

1. An adaptive management method for a wireless communication network comprising a base station and wireless relay stations, the method being applied in a wireless communication network group comprising a base station and wireless relay stations subordinated to the base station, and the method comprising the following steps of:

(a) a management node in the wireless communication network group constructing a wireless network topology information structure of the group;

(b) the management node updating the wireless network topology information of the group when a network topology relationship of the wireless communication network group changes;

(c) the management node utilizing the wireless network topology information of the group and a corresponding strategy to manage wireless relay stations and mobile terminals subordinated to the management node.

2. A method of claim 1, wherein, said management node is the base station.

3. A method of claim 1, further comprising,

taking, in the wireless communication network group, a wireless relay station with other wireless relay stations subordinated thereto as an agent node,

composing a wireless transmission sub-network by the wireless relay station and the other wireless relay stations subordinated thereto, and

the agent node constructing a wireless network topology information structure of the wireless transmission sub-network, taking charges of updating the wireless network topology information when a network topology relationship of the wireless transmission sub-network changes, and reporting the wireless network topology information to the management node of the wireless communication network group, and whereby the management node updates the wireless network topology information of the wireless communication network group.

4. A method of claim 1, wherein,

said wireless network topology information structure comprises information of nodes at two ends of wireless links in the wireless network, and information of a connection relationship between any two nodes, and further comprises information of a number of hops if there is a connection.

5. A method of claim 4, further comprising:

during a handover of a wireless relay station, said management node judging the number of hops of a target wireless relay station to which the handover is requested according to the network topology relationship, and if the number of hops exceeds a preset threshold number of hops, the management node rejecting the request or selecting another target node for the wireless relay station.

6. A method of claim 1, further comprising:

the management node in said wireless communication network group further detecting and recording wireless link status information of the wireless communication network group, and when detecting a change in the wireless link status information, updating original wireless link status information, and utilizing the wireless network topology information of the group, the wireless link status information and a corresponding strategy to manage the wireless relay stations and/or mobile terminals subordinated to the management node.

7. A method of claim 6, wherein,

said wireless link status information comprises one or any combination of the following parameters:

channel carrier to interference/noise ratio, packet loss/error rate in a wireless link, processing and transmission delay in a wireless link, actual throughput of a wireless link and resource configured for a wireless link.

8. A method of claim 6, wherein,

said wireless link status information is acquired based on a detection result of a service signal, for a wireless link directly connecting to the management node, the management node detects relative parameters of uplink status and requests the node at the other end to report relative parameters of downlink status;

for status of links between other nodes, nodes of previous hop therein acquire the status with the same method and report the status to the management node.

9. A method of claim 6, wherein,

said wireless link status information is acquired based on a measurement result of a detection signal, the management node designates one or more nodes in the topology to send one or a series of test signals, and meanwhile designates other nodes to cooperate for the test and return test results to the node sending the signal or directly to the management node, the node sending the signal or the management node acquires status information of relative wireless links based on the detection result, and if the node sending the signal is not the management node, the node needs to report updated wireless link status information to the management node;

and the management node adjusts connection relationships of the wireless communication network according to current wireless network topology information and new wireless link status information.

10. A method of claim 6, further comprising:

said management node choosing the base station and all the wireless relay stations accessed to by some relay stations to send one or a series of test signals, and designating nodes at the other ends in the topology relationship to cooperate for the test and return test results, the management node analyzing and updating the wireless link status information in the wireless communication network group based on the test results, and adjusting connection relationships of the wireless communication network according to current wireless network topology information and new wireless link status information.

11. A method of claim 1, further comprising:

said management node further transmitting the wireless network topology information of the group to wireless relay stations of the group and/or mobile terminals within the coverage of the group;

the wireless relay stations and/or mobile terminals which have obtained the wireless network topology information utilizing the wireless network topology information and a corresponding strategy to optimize connections in the wireless communication group.

12. A method of claim 11, further comprising:

said management node transmitting the wireless network topology information of the group to all wireless relay stations in the group, or wireless relay stations accessed to by other wireless relay stations, or wireless relay stations before Nth hop; and

/or

a wireless relay station requesting the wireless network topology information from the management node of the group, and the management node providing corresponding wireless network topology information according to the content of an application.

13. A method of claim 11, further comprising:

said management node broadcasting the wireless network topology information of the group, and the information being transmitted to wireless relay stations and/or mobile terminals within the coverage of the wireless communication network group.

14. A method of claim 11, wherein,

when said management node transmits the wireless network topology information of the group to the wireless relays stations of the group, a configuration indication information unit is added in an existing downlink data indication message to indicate the position and size of the wireless network topology information and wireless link status information;

or a configuration indication message is directly used to carry the wireless network topology information and the wireless link status information.

15. A method of claim 1, further comprising:

said management nodes of adjacent wireless communication networks exchanging the wireless network topology information or the wireless network topology information together with wireless link status information of the respective wireless communication network group, and during a handover of a wireless relay station, when the wireless relay station detects a node in an adjacent cell, the base station selecting a target node based on the topology information or the network topology information together with the wireless link status information of the communication network group of the adjacent cell and a corresponding strategy.

16. A method of claim 14, further comprising:

said management node transmitting the wireless network topology information or the wireless network topology information together with wireless link status information of adjacent cells to all or part of the wireless relay stations of the group, and when these wireless relay stations or mobile terminals within the coverage detect a signal from the adjacent cells during a handover, selecting a target node based on the above information and a corresponding strategy.

17. A method of claim 6, further comprising:

said management node further transmitting wireless link status information of the group to the wireless relay stations of the group and/or mobile terminals within the coverage of the group;

the wireless relay stations and/or mobile terminals which have obtained the wireless link status information utilizing the wireless network topology information, the wireless link status information and a corresponding strategy to optimize connections in the wireless communication group.

18. A method of claim 3, wherein,

said wireless network topology information structure comprises information of nodes at two ends of wireless links in the wireless network, and information of a connection relationship between any two nodes, and further comprises information of a number of hops if there is a connection.

19. A method of claim 6, further comprising:

said management nodes of adjacent wireless communication networks exchanging the wireless network topology information or the wireless network topology information together with wireless link status information of the respective wireless communication network group, and during a handover of a wireless relay station, when the wireless relay station detects a node in an adjacent cell, the base station selecting a target node based on the topology information or the network topology information together with the wireless link status information of the communication network group of the adjacent cell and a corresponding strategy.

20. A method of claim 11, further comprising:

said management node further transmitting wireless link status information of the group to the wireless relay stations of the group and/or mobile terminals within the coverage of the group;

the wireless relay stations and/or mobile terminals which have obtained the wireless link status information utilizing the wireless network topology information, the wireless link status information and a corresponding strategy to optimize connections in the wireless communication group.