SIGNALING MECHANISMS FOR NETWORK-RELAY INTERFACE WITH REDUCED OVERHEAD

• US 20100238854A1
• Filed: 05/21/2009
• Published: 09/23/2010
• Est. Priority Date: 03/20/2009
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Hu, Yang, Kazmi, Muhammad, Liu, Yin, Gan, Jiansong, Qian, Yu
• Granted Patent: US 9,084,150 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: C08J 2371/00 Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain of polyacetals C08J2359/00; of epoxy resins C08J2363/00; of polythioether-ethers C08J2381/02; of polyethersulfones C08J2381/06; Derivatives of such polymers
• CPC Class Codes: C08J 3/11 from solid polymers
• CPC Class Codes: C08J 5/2256 based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds, e.g. obtained by polycondensation
• CPC Class Codes: H01M 2300/0082 Organic polymers
• CPC Class Codes: H01M 8/1048 Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid
• CPC Class Codes: H01M 8/1072 by chemical reactions, e.g. insitu polymerisation or insitu crosslinking
• CPC Class Codes: H01M 8/1081 starting from solutions, dispersions or slurries exclusively of polymers
• CPC Class Codes: H04B 7/14 Relay systems
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• 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
• CPC Class Codes: Y02E 60/50 : Fuel cells

Abstract

Relay reporting in a wireless network is implemented by efficiently allocating radio resources based on the nature or criticality of the type of relay report. According to an embodiment, a method of communicating with a relay located in a wireless network includes instructing the relay when to transmit reports based on a mapping of different categories of relay reports to one or more different reporting schemes. Reports are received from the relay based on the relay report category and the corresponding reporting scheme. According to another embodiment, a method of reporting information from a relay to a network node of a wireless network includes generating different categories of reports at the relay for transmission to the network node. A reporting scheme associated with each report category is identified and each report is transmitted to the network node in accordance with the reporting scheme identified for the corresponding report category.

Claims

1. A method of communicating with a relay located in a wireless network, the method comprising:

instructing the relay when to transmit reports based on a mapping of different categories of relay reports to one or more different reporting schemes; and

receiving reports from the relay based on the relay report category and the corresponding reporting scheme.

2. The method of claim 1, wherein the mapping is fixed and predetermined.

3. The method of claim 1, comprising modifying the mapping based on a change in one or more conditions associated with the wireless network.

4. The method of claim 1, wherein at least one of the categories of relay reports is mapped to more than one of the reporting schemes.

5. The method of claim 1, wherein the mapping is based on a criticality associated with each category of relay report so that more critical relay reports have a higher reporting priority than less critical relay reports.

6. The method of claim 1, comprising:

periodically probing the relay to determine whether the relay has a report ready for transmission; and

allocating radio resources to the relay when the relay has a report ready for transmission.

7. The method of claim 1, comprising:

reserving periodical radio resources for use by the relay in transmitting reports; and

informing the relay of the reserved periodical radio resources.

8. The method of claim 7, comprising reassessing the amount of periodical radio resources reserved for the relay based on prior utilization of the periodical radio resources by the relay for transmitting reports.

9. The method of claim 1, comprising:

detecting whether a predefined condition occurs or is expected to occur at the relay; and

allocating radio resources to the relay responsive to detecting the predefined condition so that the relay can report information relating to the predefined condition if the predefined condition occurred.

10. The method of claim 9, wherein the predefined condition corresponds to a severe fault at the relay and the radio resources are periodically allocated so that the relay can periodically report information associated with the severe fault.

11. The method of claim 1, comprising allocating radio resources to the relay for a particular purpose and additional radio resources that are unnecessary for the specific purpose so that the relay can transmit one or more reports using the additional allocated resources.

12. The method of claim 1, comprising:

identifying a period of low user equipment transmission activity where an amount of radio resources allocated for user equipment transmissions falls below a certain threshold; and

allocating radio resources to the relay during the period of low user equipment transmission activity so that the relay can transmit one or more reports during this period.

13. The method of claim 12, comprising instructing the relay to transmit more urgent reports using the radio resources allocated to the relay prior to transmitting less urgent reports.

14. A network node comprising:

a radio resource allocation module operable to instruct a relay when to transmit reports based on a mapping of different categories of relay reports to one or more different reporting schemes; and

a report processing module operable to process reports received from the relay based on the relay report category and the corresponding reporting scheme.

15. The network node of claim 14, wherein the mapping is fixed and predetermined.

16. The network node of claim 14, comprising a mapping module operable to modify the mapping based on a change in one or more wireless network conditions observed by the network node.

17. The network node of claim 14, wherein at least one of the categories of relay reports is mapped to more than one of the reporting schemes.

18. The network node of claim 14, wherein the mapping is based on a criticality associated with each category of relay report so that more critical relay reports have a higher reporting priority than less critical relay reports.

19. The network node of claim 14, comprising a relay monitoring module operable to periodically probe the relay to determine whether the relay has a report ready for transmission and wherein the radio resource allocation module is operable to allocate radio resources to the relay when the relay has a report ready for transmission.

20. The network node of claim 14, wherein the radio resource allocation module is operable to reserve periodical radio resources for use by the relay in transmitting reports and inform the relay of the reserved periodical radio resources.

21. The network node of claim 20, wherein the radio resource allocation module is operable to reassess the amount of periodical radio resources reserved for the relay based on prior utilization of the periodical radio resources by the relay for transmitting reports.

22. The network node of claim 14, comprising a relay monitoring module operable to detect whether a predefined condition occurs or is expected to occur at the relay and wherein the radio resource allocation module is operable to allocate radio resources to the relay responsive to the relay monitoring module detecting the predefined condition so that the relay can report information relating to the predefined condition if the predefined condition occurred.

23. The network node of claim 22, wherein the predefined condition corresponds to a severe fault at the relay and the radio resource allocation module is operable to allocate periodic radio resources to the relay so that the relay can periodically report information associated with the severe fault.

24. The network node of claim 14, wherein the radio resource allocation module is operable to allocate radio resources to the relay for a particular purpose and additional radio resources that are unnecessary for the specific purpose so that the relay can transmit one or more reports using the additional allocated resources.

25. The network node of claim 14, wherein the radio resource allocation module is operable to identify a period of low user equipment transmission activity where an amount of radio resources allocated for user equipment transmissions falls below a certain threshold and allocate radio resources to the relay during the period of low user equipment transmission activity so that the relay can transmit one or more reports during this period.

26. The network node of claim 25, wherein the radio resource allocation module is operable to instruct the relay to transmit more urgent reports using the radio resources allocated to the relay prior to transmitting less urgent reports.

27. A method of reporting information from a relay to a network node of a wireless network, the method comprising:

generating different categories of reports at the relay for transmission to the network node;

identifying a reporting scheme associated with each report category; and

transmitting each report to the network node in accordance with the reporting scheme identified for the corresponding report category.

28. The method of claim 27, wherein at least one of the report categories is associated with more than one reporting scheme.

29. The method of claim 27, comprising accessing a mapping received from the network node that maps each report category to one or more reporting schemes.

30. The method of claim 29, wherein the mapping is based on a criticality associated with each category of report so that more critical reports have a higher reporting priority than less critical reports.

31. A wireless network relay comprising:

a report generation module operable to generate different categories of reports for transmission to a network node of a wireless network; and

a report transmission module operable to identify a reporting scheme associated with each report category and transmit each report to the network node in accordance with the reporting scheme identified for the corresponding report category.

32. The wireless network relay of claim 31, wherein at least one of the report categories is associated with more than one reporting scheme.

33. The wireless network relay of claim 31, wherein the report transmission module is operable to access a mapping received from the network node that maps each report category to one or more reporting schemes.

34. The wireless network relay of claim 33, wherein the mapping is based on a criticality associated with each category of report so that more critical reports have a higher reporting priority than less critical reports.