Radio link performance prediction in wireless communication terminal
View Patent ↗A method for predicting performance of a radio link in a wireless communication terminal including hypothesizing a second codeword including information associated with a hypothesized first codeword, obtaining channel state information from a received signal, and estimating a decoder error rate of the first codeword under a condition that the second codeword may not be decoded correctly, wherein the decoder error rate is estimated using the channel state information.
1. A method for predicting the performance of radio link in a wireless communication terminal, the method comprising:
hypothesizing a first codeword;
hypothesizing a second codeword including information associated with the first codeword;
obtaining channel state information from a received signal; and
estimating a decoder error rate of the first codeword under a condition that the second codeword may not be decoded correctly, the decoder error rate is estimated using the channel state information;
wherein the first codeword corresponds to a data payload and the second codeword corresponds to a control channel necessary for determining transmission parameters and scheduling information of the data payload.
2. The method of claim 1 , wherein the received signal corresponds to a cell-specific reference signal.
3. The method of claim 1 further comprising determining a synchronization status of the radio link based upon the estimated decoder error rate of the first codeword.
4. The method of claim 1 further comprising generating channel quality indication reports based on the estimated decoder error rate for the first codeword.
5. The method of claim 1 further comprising
hypothesizing a third codeword including information associated with the second codeword;
estimating the decoder error rate of the first codeword under a condition that the second and third codewords may not be decoded correctly, the decoder error rate is estimated using a mapping function that includes channel state information.
6. The method of claim 5 , wherein
the first codeword corresponds to a data payload and the second codeword corresponds to a control channel, wherein the information of the second codeword includes transmission parameters and scheduling information of the data payload; and
the third codeword corresponds to a control format indicator channel wherein the information of the third codeword includes information related to a transmission parameters of the control channel.
7. The method of claim 5 further comprising generating channel quality indication reports based on the estimated decoder error rate for the first codeword.
8. The method of claim 5 , wherein the information in the third code word is a transmission parameter corresponding to any one of:
a number of symbols on which the second codeword is mapped,
time-frequency resources on which the second codeword is mapped, or
an encoding method used for generating the second codeword, or
an information size of a payload of the second codeword, or
a block length of the second codeword, or
a rate of the second codeword, or
a redundancy version number of the first codeword, or a transmit antenna configuration used for the second codeword or
pre-coding used for the second codeword.
9. A wireless communication terminal comprising:
a transceiver;
a controller coupled to the transceiver, the controller configured to hypothesize a first codeword and to hypothesize a second codeword including information associated with the first codeword, the controller configured to obtain channel state information from a received signal, the controller configured to estimate a decoder error rate of the first codeword under a condition that the second codeword is not decoded correctly, the decoder error rate is estimated using a mapping function that includes channel state information;
wherein the first codeword corresponds to a data payload and the second codeword corresponds to a control channel necessary for determining transmission parameters and scheduling information of the data payload.
10. The terminal of claim 9 , the controller configured to determine synchronization status of the radio link based upon the estimated decoder error rate of the first codeword.
11. The method of claim 9 , the controller configured to generate channel quality indication reports based on the estimated decoder error rate for the first codeword.
12. The terminal of claim 9 , the controller configured to hypothesize a third codeword including information associated with the second codeword and to estimate the decoder error rate of the first codeword under a condition that the second and third codewords are not decoded correctly.
13. The terminal of claim 12 , wherein the first codeword corresponds to a data payload and the second codeword corresponds to a control channel, wherein the information of the second codeword includes transmission parameters and scheduling information of the data payload, and the third codeword corresponds to a control format indicator channel wherein the information of the third codeword includes information related to a transmission parameters of the control channel.
14. The terminal of claim 12 , the controller configured to generate channel quality indication reports based on the estimated decoder error rate for the first codeword.
15. The terminal of claim 12 , the information in the third code word is a transmission parameter corresponding to any one of:
a number of symbols on which the second codeword is mapped,
time-frequency resources on which the second codeword is mapped, or
an encoding method used for generating the second codeword, or
an information size of a payload of the second codeword, or
a block length of the second codeword, or
a rate of the second codeword, or
a redundancy version number of the first codeword, or
a transmit antenna configuration used for the second codeword or
pre-coding used for the second codeword.