Method and apparatus for transmitting and receiving scheduling assignments in a communication system
A method and apparatus for receiving a Scheduling Assignment (SA) by a User Equipment (UE) in a communication system in which a base station transmits the SA being a first type or a second type, the SA including a set of Information Elements (IEs), and a first IE. The method includes receiving the SA; identifying that each bit included in the set of IEs of the SA and at least one bit included in the first IE of the SA are set with a predetermined value; and performing an action corresponding to the SA of the second type, if each bit included in the set of IEs of the SA and the at least one bit included in the first IE of the SA are set with the predetermined value.
1. A method, by a terminal, for receiving a scheduling assignment (SA) being a first scheduling type or a second scheduling type in a communication system, the method comprising:
receiving the SA including a plurality of information elements (IEs);
validating whether the SA is the second scheduling type based on the received SA; and
performing an action corresponding to the SA of the second scheduling type if the validation is achieved,
wherein the validation is achieved if each bit included in a first IE of the plurality of IEs and a predefined bit included in a second IE of the plurality of IEs are set with a first value.
2. The method of claim 1 , wherein the SA of the first scheduling type is for dynamic scheduling and the SA of the second scheduling type is for semi-persistent scheduling.
3. The method of claim 1 , wherein performing the action comprises one of:
transmitting a data signal based on the received SA; and
transmitting an acknowledgement signal in response to the received SA.
4. The method of claim 1 , further comprising:
disregarding the SA, if any bit included in the first IE of the plurality of IEs or the predefined bit in the second IE of the plurality of IEs is not set with the first value.
5. The method of claim 1 , wherein the first IE of the plurality of IEs includes at least one of a cyclic shift indicator and a transmit power control (TPC) command, and
wherein the second set of one or more IEs of the SA includes a modulation and coding scheme.
6. The method of claim 1 , wherein the first set of one or more IEs of the SA includes a redundancy version, and
wherein the second IE of the plurality of IEs includes a modulation and coding scheme.
7. A terminal for receiving a scheduling assignment (SA) being a first scheduling type or a second scheduling type in a communication system, the terminal comprising:
a transceiver configured to receive the SA including a plurality of information elements (IEs); and
a controller configured to validate whether the SA is the second scheduling type based on the received SA, and to perform an action corresponding to the SA of the second scheduling type if the validation is achieved,
wherein the validation is achieved if each bit included in a first IE of the plurality of IEs and a predefined bit included in a second IE of the plurality of IEs are set with a first value.
8. The terminal of claim 7 , wherein the SA of the first scheduling type is for dynamic scheduling and the SA of the second scheduling type is for semi-persistent scheduling.
9. The terminal claim 7 , wherein the action includes data signal transmission based on the received SA or transmission of an acknowledgement signal in response to the received SA.
10. The terminal claim 7 , the controller is further configured to disregard the SA, if any bit included in the first IE of the plurality of IEs or the predefined bit in the second IE of the plurality of IEs is not set with the first value.
11. The terminal claim 7 , wherein the first IE of the plurality of IEs includes at least one of a cyclic shift indicator and a transmit power control (TPC) command, and
wherein the second IE of the plurality of IEs includes a modulation and coding scheme.
12. The terminal claim 7 , wherein the first IE of the plurality of IEs includes at least one of a redundancy version and a hybrid automatic repeat request (HARQ) process number, and
wherein the second IE of the plurality of IEs includes modulation and coding scheme.