METHOD, SYSTEM AND APPARATUS FOR ASSIGNING PILOT RESOURCES

• US 20100265910A1
• Filed: 10/31/2008
• Published: 10/21/2010
• Est. Priority Date: 11/02/2007
• Status: Abandoned Application

• Current Assignee: China Academy of Telecom Technology (China Information Communication Technology Group Co. Ltd.)
• Original Assignee: Datang Mobile Communications Equipment Company Limited (China Information Communication Technology Group Co. Ltd.)
• Inventors: Suo, Shiqiang, Wang, Libo, Tang, Hai, Sun, Shaohui, Miao, Deshan
• Application Number:
  US12/741,024
• Publication Number:
  US 20100265910A1
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/1469 using time-sharing

Abstract

Embodiments of the present invention provide a method, system and apparatus for assigning pilot resources. By assigning all or part of time and frequency resources of at least one configured SC-FDMA symbol in an UpPTS to an uplink SRS symbol and sending an assigning result to a mobile terminal, time and frequency resources in the UpPTS can be assigned to the uplink SRS symbol, so that after receiving the assigning result, the mobile terminal can send the uplink SRS symbol by using the time and frequency resources assigned to the uplink SRS symbol according to the assigning result.

Claims

1-14. -14. (canceled)

15. A method for assigning pilot resources, comprising:

assigning all or part of time and frequency resources of at least one configured uplink Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol in an Uplink Pilot Time Slot (UpPTS) to an uplink Sounding Reference Symbol (SRS), and sending an assigning result to a mobile terminal.

16. The method of claim 15, wherein the at least one SC-FDMA symbol comprises:

the first SC-FDMA symbol in the UpPTS, the last SC-FDMA symbol in the UpPTS, the first two SC-FDMA symbols in the UpPTS, the last two SC-FDMA symbols in the UpPTS, or multiple configured SC-FDMA symbols in the UpPTS.

17. The method of claim 15, wherein when there is more than one configured SC-FDMA symbol, the time and frequency resources assigned to the uplink SRS symbol are in the same frequency channel or in different frequency channels.

18. The method of claim 15, wherein assigning all or part of time and frequency resources of at least one configured uplink SC-FDMA symbol in an UpPTS to an uplink SRS comprises:

assigning other time and frequency resources except the time and frequency resources assigned to the PRACH in the all or part of time and frequency resources of the at least one configured SC-FDMA symbol to the uplink SRS symbol when part of time and frequency resources in the all or part of time and frequency resources of the at least one configured SC-FDMA symbol have been assigned to a Physical Random Access Channel (PRACH).

19. The method of claim 15, wherein assigning all or part of time and frequency resources of at least one configured uplink SC-FDMA symbol in an UpPTS to an uplink SRS comprises:

when part of time and frequency resources in the all or part of time and frequency resources of the at least one configured SC-FDMA symbol have been assigned to an uplink pilot symbol, assigning the part of time and frequency resources assigned to the uplink pilot symbol are assigned to the uplink SRS symbol, and assigning time and frequency resources after the uplink SRS symbol to the uplink pilot symbol.

20. The method of claim 15, further comprising:

sending, by the mobile terminal, the uplink SRS symbol by using the time and frequency resources assigned to the uplink SRS symbol after receiving the assigning result.

21. The method of claim 15, further comprising:

obtaining antenna information of the mobile terminal, and performing the steps of assigning the time and frequency resources according to the antenna information of the mobile terminal.

22. The method of claim 21, further comprising:

if the mobile terminal includes multiple antennae, assigning, by a base station, time and frequency resources of multiple SC-FDMA symbols to the uplink SRS symbol, and sending, by the mobile terminal after receiving the assigning result, the uplink SRS symbol corresponding to the multiple antennae in a time division mode by using the time and frequency resources of the multiple SC-FDMA symbols;

or

assigning, by the base station, time and frequency resources of one SC-FDMA symbols to the uplink SRS symbol, and sending, by the mobile terminal after receiving the assigning result, the uplink SRS symbol corresponding to the multiple antennae in a frequency division mode by using the time and frequency resources of the one SC-FDMA symbols.

23. The method of claim 15, wherein the part of time and frequency resources assigned to the uplink SRS symbol is time and frequency resources corresponding to a measured frequency channel in the at least one configured SC-FDMA symbol.

24. The method of claim 20, wherein sending, by the mobile terminal, the uplink SRS symbol by using the time and frequency resources assigned to the uplink SRS symbol comprises:

sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources corresponding to a measured frequency channel of the first SC-FDMA symbol in the UpPTS, and if a PRACH occupies part of time and frequency resources, sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources of other frequency channels in the first SC-FDMA symbol except the time and frequency resources of an frequency channel occupied by the PRACH; and

sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources corresponding to a measured frequency channel of the last SC-FDMA symbol in the UpPTS, and if a PRACH occupies part of time and frequency resources, sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources of other frequency channels in the last SC-FDMA symbol except the time and frequency resources of an frequency channel occupied by the PRACH.

25. The method of claim 20, wherein sending, by the mobile terminal, the uplink SRS symbol by using the time and frequency resources assigned to the uplink SRS symbol comprises:

sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources corresponding to a measured frequency channel of the first two SC-FDMA symbol in the UpPTS, and if a PRACH occupies part of time and frequency resources, sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources of other frequency channels in the first two SC-FDMA symbol except the time and frequency resources of an frequency channel occupied by the PRACH; and

sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources corresponding to a measured frequency channel of the last two SC-FDMA symbol in the UpPTS, and if a PRACH occupies part of time and frequency resources, sending, by the mobile terminal, the uplink SRS symbol by using time and frequency resources of other frequency channels in the last two SC-FDMA symbol except the time and frequency resources of an frequency channel occupied by the PRACH.

26. A system for assigning pilot resources, comprising a base station and a mobile terminal, wherein

the base station is adapted to assign all or part of time and frequency resources of at least one configured uplink Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol in an Uplink Pilot Time Slot (UpPTS) to an uplink Sounding Reference Symbol (SRS), and send an assigning result;

and

the mobile terminal is adapted to receive the assigning result of the base station.

27. A base station, comprising a resource assigning module and a sending module, wherein

the resource assigning module is adapted to assign all or part of time and frequency resources of at least one configured uplink Single Carrier Frequency Division Multiple Access (SC-FCMA) symbol in an Uplink Pilot Time Slot (UpPTS) to an uplink Sounding Reference Symbol (SRS);

and

the sending module is adapted to send an assigning result of the resource assigning module.

28. The base station of claim 27, wherein the resource assigning module comprises a sounding reference assigning unit and a determining unit;

the determining unit is adapted to determine whether part of time and frequency resources in the all time and frequency resources or in time and frequency resources corresponding to a measured frequency channel of the at least one configured SC-FDMA symbol have been assigned to a Physical Random Access Channel (PRACH); and

the sounding reference assigning unit is adapted to, when the determining unit determines that part of time and frequency resources have been assigned to the PRACH, assign the uplink SRS symbol other time and frequency resources except the time and frequency resources assigned to the PRACH in the all time and frequency resources or in the time and frequency resources corresponding to the measured frequency channel of the at least one configured SC-FDMA symbol;

when the determining unit determines that no time and frequency resources have been assigned to the PRACH, assign the all time and frequency resources or the time and frequency resources corresponding to the measured frequency channel of the at least one configured SC-FDMA symbol to the uplink SRS symbol.

29. The base station of claim 28, wherein the resource assigning module further comprises an uplink pilot assigning unit;

the determining unit is further adapted to determine whether part of time and frequency resources in the all time and frequency resources or in the time and frequency resources corresponding to the measured frequency channel of the at least one configured SC-FDMA symbol have been assigned to an uplink pilot symbol;

the uplink pilot assigning unit is adapted to, when the determining unit determines that part of time and frequency resources have been assigned to the uplink pilot symbol, assign the part of time and frequency resources assigned to the uplink pilot symbol to the uplink SRS symbol, and assign time and frequency resources after the uplink SRS symbol to the uplink pilot symbol.

30. The base station of claim 27, further comprising an antenna information obtaining module, adapted to obtain antenna information of a mobile terminal, and send the antenna information to the resource assigning module;

the resource assigning module is further adapted to receive the antenna information obtained by the antenna information obtaining module, and perform the steps of assigning the time and frequency resources to the uplink SRS symbol according to the antenna information.