Multiplexing Control and Data In One Resource Block

Abstract

A method for operating a control node for a wireless communication system. The control node creates a data frame having at least one resource block. The data elements of the resource block are subdivided into at least a first subset and a second subset The first subset comprises first control data for controlling a receiving node. The second subset comprises data elements of said resource block not used for control data for controlling said receiving node. The method further comprises checking whether second control data for a second receiving node are to be put into the second subset, scheduling payload data for the receiving node into the second subset if second control data are not to be put into the second subset of data elements, and transmitting the data frame to the receiving node.

1 . A method implemented by a control node in an Orthogonal Frequency Division Multiplexing (OFDM) system for multiplexing control data and payload data in one resource block, wherein the resource block comprises a plurality of resource elements, each resource element corresponding to one OFDM carrier in one OFDM symbol interval, said method comprising:
 transmitting first control data for controlling a first receiving node in a first subset of the resource elements in the resource groups;   determining whether second control data for controlling a second receiving node is scheduled to be transmitted in a second subset of the resource elements in the resource group; and   transmitting payload data for the first receiving node in the second subset of resource elements if second control data is not scheduled to be transmitted in the second set of resource elements.   
     
     
         2 . The method according to  claim 1 , wherein the first subset further comprises second control data. 
     
     
         3 . The method according to  claim 1 , wherein the first control data comprises a downlink assignment and the second control data comprises an uplink grant or a second downlink assignment. 
     
     
         4 . The method according to  claim 3 , wherein the second downlink assignment and/or uplink grant is for a data frame of another frequency band. 
     
     
         5 . The method according to  claim 1 , wherein the receiving node is a relay node or a terminal. 
     
     
         6 . The method according to  claim 1 , wherein the first control data indicates a resource block on which the first control data are transmitted if payload data are to be transmitted in the second subset of the data elements. 
     
     
         7 . The method according to  claim 1 , wherein the first control data comprises an indication on resource blocks on which payload data are transmitted. 
     
     
         8 . The method according to  claim 1 , wherein the first subset of data elements and the second subset of data elements are arranged in a mixed frequency and/or timely order in the data frame. 
     
     
         9 . A control node in an Orthogonal Frequency Division Multiplexing (OFDM) system configured to multiplex control data and payload data in one resource block, wherein the resource block comprises a plurality of resource elements, each resource element corresponding to one OFDM carrier in one OFDM symbol interval, said control node comprising:
 a transmitter for transmitting data to a first receiving node;   a controller operatively connected to said transmitter for scheduling data for transmission by said transmitter, said controller being configured to:   schedule transmission of first control data for controlling the first receiving node in a first subset of the resource elements in the resource groups;   determine whether second control data for controlling a second receiving node is scheduled to be transmitted in a second subset of the resource elements in the resource group; and   schedule transmission of payload data for the first receiving node in the second set of resource elements if second control data is not scheduled to be transmitted in the second set of resource elements.   
     
     
         10 . The control node according to  claim 9 , wherein the receiving node is a relay node or a terminal. 
     
     
         11 . The control node according to  claim 9 , wherein the control node is an eNodeB, a relay node or a terminal. 
     
     
         12 . The control node according to  claim 9  wherein the first subset further comprises second control data. 
     
     
         13 . The control node according to  claim 9  wherein the first control data comprises a downlink assignment and the second control data comprises an uplink grant or a second downlink assignment. 
     
     
         14 . The control node according to  claim 13 , wherein the second downlink assignment and/or uplink grant is for a data frame of another frequency band. 
     
     
         15 . The control node according to  claim 9 , wherein the receiving node is a relay node or a terminal. 
     
     
         16 . The control node according to  claim 9 , wherein the first control data indicates a resource block on which the first control data are transmitted if payload data are to be transmitted in the second subset of the data elements. 
     
     
         17 . The control node according to  claim 9 , wherein the first control data comprises an indication on resource blocks on which payload data are transmitted. 
     
     
         18 . The control node according to  claim 9 , wherein the first subset of data elements and the second subset of data elements are arranged in a mixed frequency and/or timely order in the data frame. 
     
     
         19 . A method implemented by a first receiving node in an Orthogonal Frequency Division Multiplexing (OFDM) system for receiving multiplexed control data and payload data in one resource block, wherein the resource block comprises a plurality of resource elements, each resource element corresponding to one OFDM carrier in one OFDM symbol interval, said method comprising:
 receiving first control data for controlling the first receiving node in a first subset of the resource elements in the resource groups;   detecting whether a second subset of resource elements in the resource group contains payload data; and—   processing the second subset of data elements as payload data if it is detected that the second subset of resource elements contains payload data.   
     
     
         20 . The method according to  claim 19 , wherein the first receiving node is a relay node or a terminal. 
     
     
         21 . The method according to  claim 19 , wherein the first control data indicates at least one resource block on which payload data are received. 
     
     
         22 . The method according to  claim 19 , wherein the first control data indicates the resource block on which the first control data are transmitted if payload data are to be transmitted in the second subset of data elements. 
     
     
         23 . The method according to  claim 19 , wherein detecting whether a second subset of resource elements in the resource group contains payload data comprises:
 checking whether a resource block on which the first control data are received is indicated by the first control data,   checking whether second control data is received in said resource block,   deciding whether the second subset of data elements contains payload data based on the check.   
     
     
         24 . A receiving node in an Orthogonal Frequency Division Multiplexing (OFDM) system for receiving multiplexed control data and payload data in one resource block, wherein the resource block comprises a plurality of resource elements, each resource element corresponding to one OFDM carrier in one OFDM symbol interval, said control node comprising:
 a receiver for receiving data in a first subset of the resource elements in the resource block,   a detector for detecting whether a second subset of resource elements in the resource block contains payload data; and   a processor for processing the second subset of data elements as payload data if it is detected that the second subset of resource elements contains payload data.   
     
     
         25 . The receiving node according to  claim 24 , wherein the detector is configured to:
 check whether a resource block on which the first control data are received is indicated by the first control data; and   decide whether the second subset of data elements contains payload data based on the check.   
     
     
         26 . The receiving node according to  claim 24 , wherein the first receiving node is a relay node or a terminal. 
     
     
         27 . The receiving node according to  claim 24 , wherein the first control data indicates at least one resource block on which payload data are received. 
     
     
         28 . The receiving node according to  claim 24 , wherein the first control data indicates the resource block on which the first control data are transmitted if payload data are to be transmitted in the second subset of data elements. 
     
     
         29 . The receiving node according to  claim 24 , wherein the detector is configured to:
 check whether a resource block on which the first control data are received is indicated by the first control data,   check whether a second control data are received in said resource block,   decide whether the second subset of data elements contains payload data based on the check.