US2022255593A1PendingUtilityA1

Method and arrangements in a telecommunication system

77
Assignee: UNWIRED PLANET LLCPriority: Jun 27, 2007Filed: Apr 27, 2022Published: Aug 11, 2022
Est. expiryJun 27, 2027(~0.9 yrs left)· nominal 20-yr term from priority
Inventors:George JöngrenBo GöranssonLei Wan
H04W 72/23H04B 7/0486H04B 7/0469H04W 52/36H04W 88/06H04B 7/0452H04W 52/54H04B 7/0689H04L 5/0048H04W 88/10H04W 72/042
77
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Claims

Abstract

Methods and arrangements are described for Multi User Multiple-Input-Multiple-Output (MU-MIMO) signaling via Multiple-Input-Multiple-Output (MIMO) antennas between a base station and one of a plurality of mobile terminals supporting both Single User and Multi User Multiple-Input-Multiple-Output (SU-MIMO and MU-MIMO) signaling modes. Switching between the modes is supported, and the modes have partly shared signaling. SU-MIMO mode signaling which is not needed for MU-MIMO mode signaling is identified. Data bits of the identified signaling is interpreted to comprise signaling information associated with MU-MIMO mode.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for a mobile terminal operable in a first mode and a second mode. the first mode and the second mode having some shared signaling, the method comprising:
 receiving information that indicates at least one signaling bit for the first mode is a redefined signaling bit for the second mode;   receiving the redefined signaling bit for the second mode; and   interpreting the redefined signaling bit for the second mode based on the information received.   
     
     
         2 . The method of  claim 1 , wherein the first mode is a Single User Multiple-Input-Multiple-Output (SU-MIMO) mode. and the second mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode. 
     
     
         3 . The method of  claim 1 , wherein the first mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode, and the second mode is Single User Multiple-Input-Multiple-Output (SU-MIMO) mode. 
     
     
         4 . The method of  claim 1 , wherein the redefined signaling bit for the second mode is associated with transmission rank signaling and/or precoder element signaling in the first mode. 
     
     
         5 . The method of  claim 4 , wherein the first mode is a Single User Multiple-Input-Multiple-Output (SU-MIMO) mode, and the second mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode. 
     
     
         6 . The method of  claim 1 , wherein the redefined signaling bit for the second mode is associated with a downlink power offset for the first mode. The method of  claim 6 , wherein the first mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode, and the second mode is Single User Multiple-Input-Multiple-Output (SU-MIMO) mode. 
     
     
         8 . The method of  claim 6 , wherein the downlink power offset is between a power reference and data symbols, and wherein the power reference includes one or more reference symbols (RS). 
     
     
         9 . A mobile terminal configured to operate in a first mode and a second mode, the first mode and the second mode having some shared signaling and at least one signaling hit redefined between the first mode and the second mode, the mobile terminal comprising:
 a receiver configured to receive:
 information that indicates at least one signaling bit for the first mode is a redefined signaling bit for the second mode, and 
 the redefined signaling bit for the second mode; and 
   a processor configured to interpret the redefined signaling bit for the second mode based on the information received.   
     
     
         10 . The mobile terminal of  claim 9 , wherein the first mode is a Single User Multiple-In Multiple-Output (SU-MIMO) mode, and the second mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode. 
     
     
         11 . The mobile terminal of  claim 9 , wherein the first mode is a Multi-Use Multiple-input-Multiple-Output (MU-MIMO) mode, and the second mode is Single User Multiple-Input-Multiple-Output (SU-MIMO) mode. 
     
     
         12 . The mobile terminal of  claim 9 , wherein the redefined signaling bit for the second mode is associated with transmission rank signaling and/or precoder element signaling in the first mode. 
     
     
         13 . The mobile terminal of  claim 12 , wherein the first mode is a Single User Multiple-Input-Multiple-Output (SU-MIMO) mode, and the second mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode. 
     
     
         14 . The mobile terminal of  claim 9 , wherein the redefined signaling bit is associated with a downlink power offset for the first mode. 
     
     
         15 . The mobile terminal of  claim 14 , wherein the first mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode, and the second mode is Single User Multiple-Input-Multiple-Output (SU-MIMO) mode. 
     
     
         16 . The mobile terminal of  claim 14 , wherein the downlink power offset is between a power reference and data symbols, and wherein the power reference includes one or more reference symbols (RS). 
     
     
         17 . A method of signaling a mobile terminal from a base station, the mobile terminal being operable in a first mode and a second mode, the first mode and the second mode having some shared signaling, the method comprising:
 identifying at least one signaling bit for the first mode;   redefining the at least one signaling bit as a redefined signaling bit for the second mode;   informing the mobile terminal of the redefined signaling bit for the second mode; and   signaling the mobile terminal operating in the second mode using the redefined signaling bit.   
     
     
         18 . The method of  claim 17 , wherein the first mode is a Single User Multiple-Input-Multiple-Output (SU-MIMO) mode, and the second mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode. 
     
     
         19 . The method of  claim 17 , wherein the first mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode, and the second mode is Single User Multiple-Input-Multiple-Output (SU-MIMO) mode. 
     
     
         20 . A base station comprising:
 circuitry configured to signal a mobile terminal in a first mode and in a second mode, the first mode and the second mode having some shared signaling;   a processor configured to:
 identify at least one signaling bit for the second mode; and 
 redefine the at least one signaling bit as a redefined signaling bit for the second mode, and 
   a transmitter configured to:
 send, to the mobile terminal, information of the redefined signaling bit for the second mode; and 
 signal the mobile terminal in the second mode using the redefined signaling bit. 
   
     
     
         21 . The base station of  claim 20 , wherein the first mode is a Single User Multiple-Input-Multiple-Output (SU-MIMO) mode, and the second mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode. 
     
     
         22 . The base station of  claim 20 , wherein the first mode is a Multi-User Multiple-Input-Multiple-Output (MU-MIMO) mode, and the second mode is Single User Multiple-Input-Multiple-Output (SU-MIMO) mode.

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