Signaling MIMO allocations

• US 9,088,984 B2
• Filed: 03/22/2010
• Issued: 07/21/2015
• Est. Priority Date: 05/04/2004
• Status: Expired due to Fees

• Current Assignee: Sisvel International S.A. (Fineur International S.A.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Beale, Martin W., Ponnampalam, Vishakan
• Primary Examiner(s): Patel, Ajit
• Assistant Examiner(s): Irace, Michael
• Application Number:
  US12/728,748
• Publication Number:
  US 20100173643A1
• Time in Patent Office: 1,947 Days
• Field of Search: 370/335, 370/330, 370/332, 370/338, 370/329, 370/341, 370/334, 370/342, 455/517, 455/450, 455/451, 455/452.1
• US Class Current: 1/1
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/1484 operating bytewise
• CPC Class Codes: H04W 36/16 Performing reselection for specific purposes
• CPC Class Codes: H04W 52/322 Power control of broadcast channels
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to demodulation of radio signals from a base station having collocated transmit antennas, and more particularly to signaling allocation information from a base station to a mobile terminal. The allocation information may include timeslot and code information of allocation to other mobile terminals. Some embodiments of the present invention facilitate a mobile terminal'"'"'s ability to receive and demodulate a signal containing multiple interfering signals by communicating codes allocated to other mobile terminals.

Claims

1. A method of communicating training sequence allocations in a cellular radio system, the method comprising:

allocating to a first mobile terminal a first plurality of training sequences in first plurality of timeslots in a frame, said first plurality of training sequences for communicating data between the first mobile terminal and a base station;

allocating to a second mobile terminal a second plurality of training sequences in second plurality of timeslots in the frame, said second plurality of training sequences for communicating data between the second mobile terminal and the base station;

generating a message indicating that the first plurality of training sequences has been allocated in the first plurality of timeslots in the frame to the first mobile terminal and the second plurality of training sequences has been allocated in the second plurality of timeslots in the frame to the second mobile terminal using a processor; and

signaling to the first mobile terminal and the second mobile terminal the message,

wherein the message is allocated during a period prior to the first plurality of timeslots and the second plurality of time slots in the frame, and

wherein the message further includes an indication of allocated training sequences of a neighboring cell.

2. The method of claim 1, wherein the act of signaling includes transmitting the message on a control channel monitored by the first mobile terminal.

3. The method of claim 1, wherein the act of signaling includes transmitting the message on a broadcast channel monitored by the first mobile terminal.

4. The method of claim 1, wherein the act of signaling includes:

determining a power level such that both the first and second mobile terminals receive the message; and

transmitting the message on a broadcast channel at the determined power level.