Method of assigning precoding vectors in a mobile cellular...

Details Method of assigning precoding vectors in a mobile cellular... Method of assigning precoding vectors in a mobile cellular...

2009-06-30

2011-10-18

Sinkantarakorn, Pao (Department: 2464)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S252000

Reexamination Certificate

active

08040865

ABSTRACT:
The invention concerns a method for assigning precoding vectors in a mobile cellular network as well as a base station (21). A base station (21) provides a code book comprising indexed precoding vectors to one or more mobile stations (41, 42, 43) associated with the base station (21) via a downlink channel (1001, 2001, 3001). A mobile station (41, 42, 43) associated with the base station (21) selects one or more indices of preferred precoding vectors from the code book and reports the indices of the one or more preferred precoding vectors to the base station (21) via an uplink channel (1002, 2002, 3002). The mobile station (41, 42, 43) selects one or more indices of preferred companion preceding vectors from the code book, which are precoding vectors that shall preferably be used by the base station (21) for other mobile stations served by the base station (21) on the same time/frequency resource, and reports the one or more indices associated with the preferred companion precoding vectors to the base station (21) via the uplink channel (1002, 2002, 3002). For each mobile station associated with the base station (21), the base station (21) determines a precoding vector based on the reported one or more indices of the preferred precoding vectors and based on the reported one or more indices of the preferred companion precoding vectors.

REFERENCES:
patent: 7733765 (2010-06-01), Suo et al.
patent: 7873113 (2011-01-01), Takano et al.
patent: 2007/0155336 (2007-07-01), Nam et al.
patent: 2008/0225975 (2008-09-01), Lee et al.
patent: 2009/0285156 (2009-11-01), Huang et al.
patent: 2010/0098009 (2010-04-01), Higuchi
patent: 2011/0013563 (2011-01-01), Sivanesan et al.
Michael Mao Wang et al., “Multi-antenna Techniques in Ultra Mobile Broadband Communication systems,” 6thAnnual Communication Networks and Services Research Conference; IEEE, pp. 397-403, (May 5, 2008).
NTT DoCoMo, “Investigation on Precoding Scheme for MU-MIMO in E-UTRA Downlink,” 3GPP Draft; R1-072422 Precoding Scheme for DL MU-MIMO, 3rdGeneration Partnership Project, pp. 1/6-6/6, Kobe, Japan, (May 7-11, 2007).
3GGP2, “Physical Layer for Ultra Mobile Broadband (UMB) Air Interface Specification,” 3GGP2, 3rdGeneration Partnership Project 2, No. C.S0084-001-0, Version 2.0, pp. 2-86-2-95, (Aug. 2007).
Interdigital Communications et al., “Downlink Control Signaling for MU-MIMO,” 3GPP Draft, R1-081386, 3rdGeneration Partnership Project, pp. 1-5, Shenzhen, China, (Mar. 31-Apr. 4, 2008).
European Search Report.

Affiliated with

Also associated with

Rating

Method of assigning precoding vectors in a mobile cellular... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of assigning precoding vectors in a mobile cellular..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of assigning precoding vectors in a mobile cellular... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4276597