Techniques for reducing communication errors in a wireless communication system
View Patent ↗A technique for operating a wireless communication device includes transmitting a scheduling request from the wireless communication device and receiving, following the scheduling request, an uplink grant that assigns an uplink channel to the wireless communication device. A time period between the scheduling request and the uplink grant is determined. Only channel quality information is transmitted in the uplink channel when the uplink grant requests the channel quality information and the time period is less than a predetermined time period.
1. A method of operating a wireless communication device, comprising:
transmitting a scheduling request from the wireless communication device;
receiving, following the scheduling request, an uplink grant that assigns an uplink channel to the wireless communication device;
transmitting only channel quality information in the uplink channel when the uplink grant requests the channel quality information; and
transmitting only data in the uplink channel when the uplink grant does not request the channel quality information.
2. A method of operating a wireless communication device, comprising:
transmitting a scheduling request from the wireless communication device;
receiving, following the scheduling request, an uplink grant that assigns an uplink channel to the wireless communication device;
determining a time period between the scheduling request and the uplink grant; and
transmitting only channel quality information in the uplink channel when the uplink grant requests the channel quality information and the time period is less than a predetermined time period.
3. The method of claim 2 , further comprising:
transmitting the channel quality information and data in the uplink channel when the uplink grant requests the channel quality information and the time period is greater than the predetermined time period.
4. The method of claim 2 , wherein the uplink grant is an aperiodic channel quality information uplink grant.
5. A method of operating a wireless communication device, comprising:
transmitting a scheduling request from the wireless communication device;
receiving, following the scheduling request, an uplink grant that assigns an uplink channel to the wireless communication device;
decoding one or more fields in the uplink grant;
transmitting only the channel quality information in the uplink channel when the one or more decoded fields specify that only the channel quality information be transmitted in the uplink grant; and
transmitting the channel quality information and data in the uplink channel when the one or more decoded fields specify that the channel quality information and the data be transmitted in the uplink grant.
6. The method of claim 5 , wherein the one or more decoded fields include a single channel quality information request field that includes multiple bits, wherein the multiple bits indicate whether the channel quality information is requested and whether only the channel quality information or the channel quality information and the data are to be transmitted in the uplink grant.
7. The method of claim 5 , wherein the one or more decoded fields include a channel quality information request field that includes one bit that indicates whether the channel quality information is requested and a modulation and coding scheme field whose value indicates whether only the channel quality information or the channel quality information and the data can be transmitted in the uplink grant.
8. A method of operating a wireless communication device, comprising:
receiving, at a first wireless communication device, a scheduling request from a second wireless communication device;
scheduling a channel quality information only uplink grant for the second wireless communication device at least a predetermined time period after the scheduling request, wherein the channel quality information uplink grant assigns an uplink channel to the second wireless communication device; and
transmitting, from the first wireless communication device, the scheduled channel quality information uplink grant.
9. A method of operating a wireless communication device, comprising:
encoding, at a first wireless communication device, one or more fields in an uplink grant for a second wireless communication device, wherein the uplink grant assigns an uplink channel to the second wireless communication device;
transmitting, from the first wireless communication device, the uplink grant;
receiving only channel quality information in the uplink channel when the one or more encoded fields specified that only the channel quality information be transmitted in the uplink grant; and
receiving the channel quality information and data in the uplink channel when the one or more encoded fields specified that the channel quality information and the data be transmitted in the uplink grant.
10. The method of claim 9 , wherein the one or more decoded fields include a single channel quality information request field that includes multiple bits, wherein the multiple bits indicate whether the channel quality information is requested and whether only the channel quality information or the channel quality information and the data can be transmitted in the uplink grant.
11. The method of claim 9 , wherein the one or more decoded fields include a channel quality information request field that includes one bit that indicates whether the channel quality information is requested and a modulation and coding scheme field whose value indicates whether only the channel quality information or the channel quality information and the data can be transmitted in the uplink grant.