Control information feedback over the long-term evolution physical uplink shared channel
View Patent ↗A network component comprising a plurality of encoders, a plurality of rate-matching modules coupled to the encoders, and a channel interleaver coupled to the rate-matching modules, wherein the rate-matching modules calculate the number of bits for rate matching a plurality of feedback control information based on a total number of bits allocated to a channel traffic without a traffic data. Included is a network component comprising at least one processor configured to encode a plurality of feedback control information, calculate the number of bits for rate-matching the feedback control information based on a total number of bits allocated to a channel traffic without a traffic data. Included is a method comprising receiving a downlink traffic, detecting a request to transmit uplink data in the downlink traffic, and transmitting feedback control information with or without data based on the request.
1. A user equipment (UE) comprising:
at least one memory device: and
at least one processing device configured to execute instructions stored on the at least one memory device such that when executed, cause the UE to:
encode rank indication (RI) information;
calculate a number of bits for the encoded RI information;
calculate a total number of bits available for transmission of control information without traffic data via an uplink channel;
calculate a number of bits for rate-matching a plurality of channel quality information (CQI) transmitted to a network component via the uplink channel, the number of bits for rate-matching calculated by subtracting the number of bits for the encoded RI information from the total number of bits available for the transmission of control information without traffic data;
modulate the number of bits for the encoded RI information into at least one RI symbol;
modulate the number of bits for rate-matching into at least one CQI symbol;
combine the at least one RI symbol with the at least one CQI symbol; and
transmit the combined RI and CQI symbols to the network component via the uplink channel.
2. The UE of claim 1 , wherein feedback control information, provided from the UE to the network component, comprises a channel quality information (CQI), a rank indication (RI), a hybrid automatic repeat request acknowledgement (HARQ-ACK), or combinations thereof.
3. The UE of claim 2 , wherein a number of bits for rate-matching the RI and the HARQ-ACK are calculated according to section 5.2.4.1 of the 3GPP TS 36.212 version 8.4.0.
4. The UE of claim 2 , wherein the at least one processing device is further configured to:
calculate a number of bits for rate-matching a virtual data based on a total number of bits allocated to a channel traffic; and
pad the virtual data.
5. The UE of claim 4 , wherein a number of bits for rate-matching the RI and the HARQ-ACK are calculated according to section 5.2.2.6 of the 3GPP TS 36.212 version 8.4.0, and wherein the number of bits for rate-matching the virtual data is calculated by subtracting the number of bits for rate-matching the CQI and RI from the total number of bits allocated to a channel traffic.
6. The UE of claim 4 , wherein the virtual data is modulated at about zero signal power.
7. The UE of claim 1 , wherein the at least one processing device is further configured to:
puncture remaining feedback control information into the combined RI and CQI symbols; and
transmit the feedback control information.
8. A method implemented in a user equipment (UE), the method comprising:
encoding rank indication (RI) information;
calculating a number of bits for the encoded RI information;
calculating a total number of bits available for transmission of control information without traffic data via an uplink channel;
calculating a number of bits for rate-matching a plurality of channel quality information (CQI) transmitted to a network component via the uplink channel, the number of bits for rate-matching calculated by subtracting the number of bits for the encoded RI information from the total number of bits available for the transmission of control information without traffic data;
modulating the number of bits for the encoded RI information into at least one RI symbol;
modulating the number of bits for rate-matching into at least one CQI symbol;
combining the at least one RI symbol with the at least one CQI symbol; and
transmitting the combined RI and CQI symbols to the network component via the uplink channel.
9. The method of claim 8 , further comprising transmitting feedback control information from the UE to the network component via the uplink channel, wherein the uplink channel comprises a physical uplink shared channel (PUSCH).
10. The method of claim 9 , wherein the feedback control information comprises a CQI, an RI, a hybrid automatic repeat request acknowledgement (HARQ-ACK), or combinations thereof.
11. The method of claim 10 , further comprising puncturing the HARQ-ACK into the combined CQI and RI symbols.
12. A non-transitory computer readable medium storing instructions executable by a processor of a user equipment (UE) to implement a method, the method comprising:
encoding rank indication (RI) information;
calculating a number of bits for the encoded RI information;
calculating a total number of bits available for transmission of control information without traffic data via an uplink channel;
calculating a number of bits for rate-matching a plurality of channel quality information (CQI) transmitted to a network component via the uplink channel, the number of bits for rate-matching calculated by subtracting the number of bits for the encoded RI information from the total number of bits available for the transmission of control information without traffic data;
modulating the number of bits for the encoded RI information into at least one RI symbol;
modulating the number of bits for rate-matching into at least one CQI symbol;
combining the at least one RI symbol with the at least one CQI symbol; and
transmitting the combined RI and CQI symbols to the network component via the uplink channel.
13. The non-transitory computer readable medium of claim 12 , the method further comprising transmitting feedback control information from the UE to the network component via the uplink channel, wherein the uplink channel comprises a physical uplink shared channel (PUSCH).
14. The non-transitory computer readable medium of claim 13 , wherein the feedback control information comprises a CQI, an RI, a hybrid automatic repeat request acknowledgement (HARQ-ACK), or combinations thereof.
15. The non-transitory computer readable medium of claim 14 , the method further comprising puncturing the HARQ-ACK into the combined CQI and RI symbols.