Segmentation of control payload for channel encoding

1. A method of wireless communication of a user equipment (UE), comprising:

determining K1 information bits carrying one or more channel state information (CSI) reports, the one or more reports including a first CSI report, K1 being an integer greater than 0;

selecting K2 information bits from the K1 information bits, the K2 information bits excluding a part of information bits of the first CSI report, K2 being an integer greater than 0 and smaller than K1;

determining E2 encoded bits derived from the K2 information bits to be transmitted, E2 being an integer greater than 0;

determining a first code rate based on K2 and E2;

determining that the first code rate is smaller than a code-rate threshold; and

transmitting the E2 encoded bits in a physical up-link channel to a base station.

2. The method of claim 1 , further comprising:

receiving a configuration from the base station, the configuration indicates at least one of the code-rate threshold and the integer E2.

3. The method of claim 1 , further comprising:

inputting the K2 information bits in an encoder; and

manipulating encoded bits output from the encoder to obtain the E2 encoded bits.

4. The method of claim 1 , further comprising:

determining E1 encoded bits to be derived from the K1 information bits for transmission in the physical up-link channel, E1 being an integer; and

determining a second code rate based on K1 and E1, wherein the K2 information bits is selected in response to determining that the second code rate is in equal to or greater than the code-rate threshold.

5. The method of claim 1 , wherein the first CSI report includes a first part and a second part, wherein the part of information bits excluded carries a first component of the second part.

6. The method of claim 5 , wherein the second part contains a plurality of components corresponding to one or more priority levels, the method further comprising:

determining, from the plurality of components, one or more components whose priority levels are lower than or equal to priority levels of the remaining components of the plurality of components, wherein the one or more components include the first component, wherein the part of the information bits excluded carries the one or more components.

7. The method of claim 6 , wherein the remaining components of the plurality of components are a maximum number of components that allow the first code rate to be smaller than the code-rate threshold.

8. A method of wireless communication of a user equipment (UE), comprising:

determining K1 information bits carrying one or more channel state information (CSI) reports, the one or more reports including a first CSI report, K1 being an integer greater than 0;

selecting K2 information bits from the K1 information bits, the K2 information bits excluding a part of information bits of the first CSI report, K2 being an integer greater than 0 and smaller than K1;

determining an integer M that is a maximum number of segments allowed for segmenting the K1 information bits; and

dividing the K2 information bits into M segments;

determining that each segment from the M segments of the K2 information bits has a respective size equal to or smaller than a segment-size threshold; and

transmitting E2 encoded bits derived from the K2 information bits in a physical up-link channel to a base station, E2 being an integer greater than 0.

9. The method of claim 8 , further comprising:

dividing the K1 information bits into M segments, wherein the K2 information bits are selected in response to determining that at least one segment from the M segments of the K1 information bits has a size greater than the segment-size threshold.

10. The method of claim 8 , further comprising:

inputting each segment of the M segments to an encoder; and

manipulating encoded bits output from the encoder to obtain a respective part of the E2 encoded bits.

11. The method of claim 8 , wherein the first CSI report includes a first part and a second part, wherein the part of information bits excluded carries a first component of the second part.

12. The method of claim 11 , wherein the second part contains a plurality of components corresponding to one or more priority levels, the method further comprising:

determining, from the plurality of components, one or more components whose priority levels are not greater than priority levels of the remaining components of the plurality of components, wherein the one or more components include the first component, wherein the part of the information bits excluded carries the one or more components.

13. An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:

a memory; and

at least one processor coupled to the memory and configured to:

determine K1 information bits carrying one or more channel state information (CSI) reports, the one or more reports including a first CSI report, K1 being an integer greater than 0;

select K2 information bits from the K1 information bits, the K2 information bits excluding a part of information bits of the first CSI report, K2 being an integer greater than 0 and smaller than K1;

determine E2 encoded bits derived from the K2 information bits to be transmitted, E2 being an integer greater than 0;

determine a first code rate based on K2 and E2;

determine that the K2 information bits are in a first predetermined relationship with a threshold; and

determine that the first code rate is smaller than a code-rate threshold; and

transmit the E2 encoded bits derived from the K2 information bits in a physical up-link channel to a base station, E2 being an integer greater than 0.

14. The apparatus of claim 13 , wherein the at least one processor is further configured to:

input the K2 information bits in an encoder; and

manipulate encoded bits output from the encoder to obtain the E2 encoded bits.

15. The apparatus of claim 13 , wherein the at least one processor is further configured to:

determine an integer E1 that is a number of encoded bits to be derived from the K1 information bits for transmission in the physical up-link channel; and

determine a second code rate based on K1 and E1, wherein the K2 information bits is selected in response to determining that the second code rate is in equal to or greater than the code-rate threshold.

16. An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:

a memory; and

at least one processor coupled to the memory and configured to:

determine K1 information bits carrying one or more channel state information (CSI) reports, the one or more reports including a first CSI report, K1 being an integer greater than 0;

select K2 information bits from the K1 information bits, the K2 information bits excluding a part of information bits of the first CSI report, K2 being an integer greater than 0 and smaller than K1;

determine an integer M that is a maximum number of segments allowed for segmenting the K1 information bits; and

divide the K2 information bits into M segments;

determine that each segment from the M segments of the K2 information bits has a respective size equal to or smaller than a segment-size threshold; and

transmit E2 encoded bits derived from the K2 information bits in a physical up-link channel to a base station, E2 being an integer greater than 0.

17. The apparatus of claim 16 , wherein the at least one processor is further configured to:

divide the K1 information bits into M segments, wherein the K2 information bits are selected in response to determining that at least one segment from the M segments of the K1 information bits has a size greater than the segment-size threshold.