Semi-persistent scheduled resource release in a mobile communication network

Abstract

A user equipment for in use in a mobile communication system includes a receiver that receives control channel signaling including a new data indicator and a modulation and coding scheme field, and processing circuitry which determines that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index. The processing circuitry deactivates a semi-persistent resource allocation in response to determination that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index.

1 . A method for deactivating a semi-persistent resource allocation in a mobile communication system, comprising:
 receiving, by a user equipment, control channel signaling including a new data indicator and a modulation and coding scheme field;   determining, by a user equipment, that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index; and   deactivating the semi-persistent resource allocation in response to the determining that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index.   
     
     
         2 . The method according to  claim 1 , wherein the predetermined combination of the new data indicator value and the modulation and coding scheme index is the new data indicator value being 0 and the modulation and coding scheme index being all 1's in a binary string. 
     
     
         3 . The method according to  claim 1 , wherein the control channel signaling is protected by an error detection field that is masked with an identifier assigned to the user equipment for identification in signaling procedures related to the semi-persistent resource allocation, and
 wherein a field of the control channel signaling is set to a predetermined value for validating the control channel signaling as a semi-persistent resource deactivation indication.   
     
     
         4 . The method according to  claim 1 , wherein the modulation and coding scheme field indicates one of plural modulation and coding scheme indices and a subset of the modulation and coding scheme indices indicate no transport block size information, and wherein the method further comprises one of following:
 deactivating a semi-persistent resource allocation for an uplink channel associated with the user equipment in response to a first predetermined modulation and coding scheme index of the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field,   deactivating a semi-persistent resource allocation for a downlink channel associated with the user equipment in response to an indication of a second predetermined modulation and coding scheme index in the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field, and   deactivating the semi-persistent resource allocation for the downlink channel and the semi-persistent resource allocation for the uplink channel in response to a third predetermined modulation and coding scheme index of the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field.   
     
     
         5 . The method according to  claim 4 , wherein the control channel signaling is downlink channel control signaling used for scheduling downlink transmissions and includes the first predetermined modulation and coding scheme index for deactivating the semi-persistent resource allocation for the uplink channel. 
     
     
         6 . The method according to  claim 1 , wherein:
 the control channel signaling includes a resource allocation field value indicating a number of resource blocks allocated to the user equipment and a modulation and coding scheme index indicating a modulation and coding scheme, and   the method further comprises determining a transport block size based on the resource allocation field value and the modulation and coding scheme index.   
     
     
         7 . The method according to  claim 1 , wherein:
 the modulation and coding scheme field indicates one of plural predetermined indices, and   a non-empty subset of the predetermined indices is used to jointly encode modulation scheme, transport block size, and redundancy version for an uplink data transmission, while the remaining indices in the subset of the predetermined indices are used to encode only a redundancy version for an uplink data transmission.   
     
     
         8 . The method according to  claim 1 , wherein:
 the modulation and coding scheme field indicates one of plural predetermined indices, and   a non-empty subset of the predetermined indices is used to jointly encode modulation scheme and transport block size for a downlink transmission to be received by the user equipment, while the remaining indices in the subset of the predetermined indices are used to encode only a modulation scheme for a downlink transmission.   
     
     
         9 . A user equipment for in use in a mobile communication system comprising:
 a receiver configured to receive control channel signaling including a new data indicator and a modulation and coding scheme field, and   processing circuitry configured to:
 determine that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index, and 
 deactivate a semi-persistent resource allocation in response to determination that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index. 
   
     
     
         10 . The user equipment according to  claim 9 , wherein the predetermined combination of the new data indicator value and the modulation and coding scheme index is the new data indicator value being 0 and the modulation and coding scheme index being all 1's in a binary string. 
     
     
         11 . The user equipment according to  claim 9 , wherein the control channel signaling is protected by an error detection field that is masked with an identifier assigned to the user equipment for identification in signaling procedures related to the semi-persistent resource allocation, and
 wherein a field of the control channel signaling is set to a predetermined value for validating the control channel signaling as a semi-persistent resource deactivation indication.   
     
     
         12 . The user equipment according to  claim 9 , wherein the modulation and coding scheme field indicates one of plural modulation and coding scheme indices and a subset of the modulation and coding scheme indices indicate no transport block size information, and wherein the processing circuitry is configured to perform one of following:
 deactivate a semi-persistent resource allocation for an uplink channel associated with the user equipment in response to a first predetermined modulation and coding scheme index of the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field,   deactivate a semi-persistent resource allocation for a downlink channel associated with the user equipment in response to an indication of a second predetermined modulation and coding scheme index in the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field, and   deactivate the semi-persistent resource allocation for the downlink channel and the semi-persistent resource allocation for the uplink channel in response to a third predetermined modulation and coding scheme index of the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field.   
     
     
         13 . The user equipment according to  claim 12 , wherein the control channel signaling is downlink channel control signaling used for scheduling downlink transmissions and includes the first predetermined modulation and coding scheme index for deactivating the semi-persistent resource allocation for the uplink channel. 
     
     
         14 . The user equipment according to  claim 9 , wherein:
 the control channel signaling includes a resource allocation field value indicating a number of resource blocks allocated to the user equipment and a modulation and coding scheme index indicating a modulation and coding scheme, and   the processing circuitry is configured to determine a transport block size based on the resource allocation field value and the modulation and coding scheme index.   
     
     
         15 . The user equipment according to  claim 9 , wherein:
 the modulation and coding scheme field indicates one of plural predetermined indices, and   a non-empty subset of the predetermined indices is used to jointly encode modulation scheme, transport block size, and redundancy version for an uplink data transmission, while the remaining indices in the subset of the predetermined indices are used to encode only a redundancy version for an uplink data transmission.   
     
     
         16 . The user equipment according to  claim 9 , wherein:
 the modulation and coding scheme field indicates one of plural predetermined indices, and   a non-empty subset of the predetermined indices is used to jointly encode modulation scheme and transport block size for a downlink transmission to be received by the user equipment, while the remaining indices in the subset of the predetermined indices are used to encode only a modulation scheme for a downlink transmission.   
     
     
         17 . A non-transitory, computer-readable storage medium for use with a user equipment in a mobile communication system, the non-transitory, computer-readable storage medium storing instructions, that when executed by a processor, cause the processor to control the user equipment to perform operations comprising:
 receiving control channel signaling including a new data indicator and a modulation and coding scheme field;   determining that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index; and   deactivating a semi-persistent resource allocation in response to the determining that the new data indicator and the modulation and coding scheme field of the control channel signaling indicates a predetermined combination of a new data indicator value and a modulation and coding scheme index.   
     
     
         18 . The non-transitory, computer-readable storage medium according to  claim 17 , wherein the predetermined combination of the new data indicator value and the modulation and coding scheme index is the new data indicator value being 0 and the modulation and coding scheme index being all 1's in a binary string. 
     
     
         19 . The non-transitory, computer-readable storage medium according to  claim 17 , wherein the control channel signaling is protected by an error detection field that is masked with an identifier assigned to the user equipment for identification in signaling procedures related to the semi-persistent resource allocation, and
 wherein a field of the control channel signaling is set to a predetermined value for validating the control channel signaling as a semi-persistent resource deactivation indication.   
     
     
         20 . The non-transitory, computer-readable storage medium according to  claim 17 , wherein the modulation and coding scheme field indicates one of plural modulation and coding scheme indices and a subset of the modulation and coding scheme indices indicate no transport block size information, and wherein the non-transitory, computer-readable storage medium stores instructions, that when executed by a processor, cause the processor to control the user equipment to perform a further operation comprising one of following:
 deactivating a semi-persistent resource allocation for an uplink channel associated with the user equipment in response to a first predetermined modulation and coding scheme index of the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field,   deactivating a semi-persistent resource allocation for a downlink channel associated with the user equipment in response to an indication of a second predetermined modulation and coding scheme index in the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field, and   deactivating the semi-persistent resource allocation for the downlink channel and the semi-persistent resource allocation for the uplink channel in response to a third predetermined modulation and coding scheme index of the subset of the modulation and coding scheme indices being indicated in the modulation and coding scheme field.