Method of Selection and Signaling of Downlink and Uplink Bandwidth in Wireless Networks

• US 20090010219A1
• Filed: 01/30/2007
• Published: 01/08/2009
• Est. Priority Date: 02/07/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung-Jun, Lee, Young-Dae, Chun, Sung-Duck, Jung, Myung-Cheul
• Granted Patent: US 8,243,665 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04B 17/382 for resource allocation, admission control or handover
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

In a wireless mobile communications system, a method of receiving data or signaling on a channel from a cell having a plural of divisions of cell bandwidth. Utilizing one or more sub-bandwidths to receive data or a signaling from the cell, thereby optimizing data or signaling transmission efficiency.

Claims

1. a method of handling mobile communications, the method comprising:

allocating one or more sub-bandwidths of a cell bandwidth in order to support uplink or downlink communications; and

performing uplink or downlink communications according to the one or more allocated sub-bandwidths.

2. The method of claim 1, further comprising:

dividing the cell bandwidth into multiple sub-bandwidths.

3. The method of claim 1, further comprising:

receiving signaling from a mobile terminal to determine how the allocating step is to be performed.

4. The method of claim 1, wherein the one or more allocated sub-bandwidths are used for at least one of an initial access, a response of the initial access and a connection setup.

5. The method of claim 4, wherein the initial access is related to random access procedures, and the connection setup is related to radio resource control.

6. The method of claim 1, wherein a bandwidth size of each sub-bandwidth is equal to a minimum bandwidth size of the terminal.

7. The method of claim 1, wherein control channel information is transmitted via the at least one or more sub-bandwidths.

8. The method of claim 7, wherein the control channel information is related to at least one of a synchronization channel, a paging channel (PCH), a broadcast channel (BCH), a paging message, and system information.

9. The method of claim 3, further comprising:

transmitting, to a mobile terminal, information related to the allocation of the one or more sub-bandwidths of the cell bandwidth, wherein the allocation of the one or more sub-bandwidths is based upon the received signaling from the mobile terminal.

10. The method of claim 1, further comprising:

receiving system information which includes one or more designated sub-bandwidths of the cell bandwidth for at least one of an initial access response and a RRC connection setup.

11. The method of claim 1, further comprising:

transmitting a measurement control message to request a mobile terminal to report measurement results.

12. The method of claim 1, further comprising:

receiving information from a mobile terminal; and

determining whether to perform intra-frequency measurement or inter-frequency measurement for the neighboring cell measurement based on the received information.

13. The method of claim 12, wherein the information includes a mobile terminal capability information for performing the neighboring cell measurement.

14. The method of claim 1, wherein the cell bandwidth is contiguously connected to one or more other cell bandwidth if the one or more other cell bandwidth are controlled by same network.

15. A method of handling mobile communications, the method comprising:

receiving allocation of one or more sub-bandwidths of a cell bandwidth in order to support uplink or downlink communications; and

performing uplink or downlink communications according to the one or more allocated sub-bandwidths.

16. The method of claim 15, further comprising:

transmitting signaling to a network to determine how the receiving allocation step is to be performed.

17. The method of claim 15, wherein the cell bandwidth is divided into multiple sub-bandwidths by a network.

18. The method of claim 15, wherein the signaling is related to at least one of a random access information, a measurement result, and system information.

19. The method of claim 18, wherein the random access information includes a certain one or more sub-bandwidths on a Random Access Channel (RACH) by the terminal.

20. The method of claim 18, wherein the random access information includes a measurement result.

21. The method of claim 19, wherein the measurement result includes at least one of a path loss and power level to the cell.

22. The method of claim 15, further comprising:

receiving a measurement control message for performing a measurement.

23. The method of claim 16, wherein the allocation of the one or more sub-bandwidths is determined randomly if the signaling has no information.

24. The method of claim 16, wherein the signaling includes information to indicate one or more designated sub-bandwidths.

25. The method of claim 24, wherein the one or more designated sub-bandwidths are used for at least one of an initial access response and a Radio Resource Control (RRC) connection setup.

26. The method of claim 22, further comprising:

measuring a channel quality of a cell after the receiving the measurement control message.

27. The method of claim 26, further comprising:

reporting the channel quality of the cell to a network.

28. The method of claim 27, further comprising:

receiving allocation of one or more sub-bandwidths of the cell bandwidth based on the reported channel quality of the cell to the network.

29. The method of claim 26, wherein the measuring step further comprising:

measuring a neighboring cell by obtaining frequency information about the neighboring cell from a base station.

30. The method of claim 29, wherein the measuring step further comprising:

determining whether to perform an inter-frequency measurement or an intra-frequency measurement based on the obtained frequency information about the neighboring cell.

31. The method of claim 30, wherein the determining step further comprising:

performing the inter-frequency measurement if the neighboring cell is located in different frequency bandwidth compare to a current cell of a mobile terminal.

32. The method of claim 30, wherein the inter-frequency measurement is performed with re-tuning of a receiver in the mobile terminal for switching the current cell to the neighboring cell.

33. The method of claim 30, wherein the determining step further comprising:

performing the intra-frequency measurement if the neighboring cell is located in same frequency bandwidth compare to a current cell of a mobile terminal.

34. The method of claim 33, wherein the intra-frequency measurement is performed without any gap of time interval.

35. The method of claim 33, wherein the intra-frequency measurement is performed without re-tuning of a receiver in the mobile terminal for switching the current cell to the neighboring cell.