Method and Apparatus Using Varying Length Training Sequences in Radio Communication

• US 20080186868A1
• Filed: 01/19/2006
• Published: 08/07/2008
• Est. Priority Date: 01/31/2005
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Zhang, Xiaobo, Ma, Ni, Zhang, Xuejun, Li, Yueheng
• Application Number:
  US11/814,814
• Publication Number:
  US 20080186868A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention discloses a communication method for radio communication system, comprising the steps of detecting signals received from a mobile terminal so as to obtain detected results of a corresponding uplink channel of the received signals; determining the length criteria of training sequences in corresponding uplink bursts based on said detected results of the uplink channel; allocating predetermined uplink timeslots for said mobile terminal based on said length criteria of training sequences in the uplink bursts; and notifying said mobile terminal with said length criteria of training sequences in the uplink bursts and said uplink timeslots.

Claims

1. A communication method for radio communication system, comprising the steps of:

(a) Detecting signals received from a mobile terminal so as to obtain detected results of a corresponding uplink channel of the received signals;

(b) Determining a length criteria of training sequences in corresponding uplink bursts based on said detected results of the uplink channel;

(c) Allocating predetermined uplink timeslots for said mobile terminal based on said length criteria of training sequences in the corresponding uplink bursts; and

(d) Notifying said mobile terminal with said length criteria of training sequences in the uplink bursts and said uplink timeslots.

2. The communication method according to claim 1, wherein, said length criteria includes the length of training sequences.

3. The communication method according to claim 2, wherein, said length criteria further includes time intervals in which said length of said training sequences is continuously employed.

4. The communication method according to claim 2, wherein, the length of training sequences in the same length criteria is the same.

5. The communication method according to claim 2, wherein, the length of training sequences is zero.

6. The communication method according to claim 5, further comprising the steps of changing the number of mobile terminals of which the training sequences length is zero in said radio communication system, based on the detected results.

7. The communication method according to claim 2, wherein, all of the communication bursts have the same length criteria of training sequences in said predetermined uplink time slots.

8. The communication method according to claim 1, wherein, detection of uplink channels includes SIR, SNR, or SNIR.

9. The communication method according to claim 1, wherein, said radio communication system is CDMA mobile communication system.

10. A network side equipment for radio communication system, comprising:

a network side measurement means for detecting signals received from a mobile terminal so as to obtain detected results of a corresponding uplink channel of the received signals;

a network side determination means for determining a length criteria of training sequences in the uplink bursts based on said detected results of the uplink channel and allocating predetermined uplink timeslots for said mobile terminal based on said length criteria of training sequences in the uplink bursts;

a sending means for notifying said mobile terminal with said length criteria of training sequences in the uplink bursts and said uplink timeslots.

11. The network side equipment according to claim 10, wherein, said length criteria includes the length of training sequences.

12. The network side equipment according to claim 11, wherein, said length criteria further includes time intervals in which said length of said training sequences is continuously employed.

13. The network side equipment according to claim 11, wherein, the length of training sequences in the same length criteria is the same.

14. The network side equipment according to claim 11, wherein, the length of training sequences is zero.

15. The network side equipment according to claim 14, wherein said network side equipment further changes the number of mobile terminals of which the training sequences length is zero in said radio communication system, based on the detected results.

16. The network side equipment according to claim 11, wherein, all of the communication bursts have the same length criteria of training sequences in said predetermined uplink time slots.

17. A communication method for radio communication system, comprising the steps of:

(a) Determining a length criteria of training sequences in the corresponding downlink bursts based on downlink channel detection reports from a mobile terminal;

(b) Allocating predetermined downlink timeslots for said mobile terminal based on the length criteria of training sequences in said downlink bursts;

(c) Notifying said mobile terminal with said length criteria of training sequences in the downlink bursts and said downlink timeslots.

18. The communication method according to claim 17, wherein, said length criteria includes the length of training sequences.

19. The communication method according to claim 18, wherein, said length criteria further includes time intervals in which said length of said training sequences is continuously employed.

20. The communication method according to claim 18, wherein, the length of training sequences in the same length criteria is the same.

21. The communication method according to claim 18, wherein, the length of training sequences is zero.

22. The communication method according to claim 21, further comprising the steps of changing the number of mobile terminals of which the training sequences length is zero in said radio communication system, based on the detected results.

23. The communication method according to claim 18, wherein, all of the communication bursts have the same length criteria of training sequences in said predetermined uplink time slots.

24. The communication method according to claim 17, further comprising the step of receiving a downlink channel detection report from a mobile terminal.

25. A network side equipment for radio communication system, comprising:

a network side determination means for determining length criteria of training sequences in the corresponding downlink bursts based on a downlink channel detection report from a mobile terminal and allocating predetermined downlink timeslots for said mobile terminal based on the length criteria of training sequences in said downlink bursts;

a sending means for notifying said mobile terminal with said length criteria of training sequences in the downlink bursts and said downlink timeslots.

26. The network side equipment according to claim 25, further comprising a receiving means for receiving a downlink channel detection report from a mobile terminal.

27. A mobile terminal for radio communication system, said mobile terminal comprising:

a receiving means for receiving notification from a network side equipment, the notification including length criteria of training sequences in bursts and the allocation of timeslots, and

an adjusting means for receiving or sending bursts based on the length criteria of training sequences in bursts and the allocation of timeslots in the received notification.

28. The mobile terminal according to claim 27, said mobile terminal further comprising:

a detection means for detecting downlink channels to obtain a downlink channel detection report,

a sending means for sending the detection report to a network side equipment.