TRANSMISSION OF ACKNOWLEDGE/NOT-ACKNOWLEDGE WITH REPETITION
In ACK/NAK responses with repetition, the ACK/NAK response from the user equipment to a Physical Downlink Shared CHannel (PDSCH) transmission is repeated in consecutive frames a predetermined number of frames following receipt. This repeat ACK/NAK causes a problem when a PSCCH transmission directed to the same user equipment occurs in consecutive subframes. In a first embodiment, the first ACK/NAK response repeats preempting any ACK/NAK response to the later PDSCH transmission. In a second embodiment, the first ACK/NAK response does not repeat and the ACK/NAK response to the later PDSCH transmission occurs.
This application claims priority under 35 U.S.C. 119(e)(1) to U.S. Provisional Application No. 61/149,236 filed Feb. 2, 2009.
TECHNICAL FIELD OF THE INVENTIONThe technical field of this invention is wireless telephony.
BACKGROUND OF THE INVENTIONNon-synchronized UE 109 also employs non-synchronous random access to request allocation of up link 111 time or frequency or code resources. If UE 109 has data ready for transmission, which may be traffic data, measurements report, tracking area update, UE 109 can transmit a random access signal on up link 111. The random access signal notifies base station 101 that UE 109 requires up link resources to transmit the UEs data. Base station 101 responds by transmitting to UE 109 via down link 110, a message containing the parameters of the resources allocated for UE 109 up link transmission along with a possible timing error correction. After receiving the resource allocation and a possible timing advance message transmitted on down link 110 by base station 101, UE 109 optionally adjusts its transmit timing and transmits the data on up link 111 employing the allotted resources during the prescribed time interval.
SUMMARY OF THE INVENTIONIn ACK/NAK responses with repetition, the ACK/NAK response from the user equipment to a Physical Downlink Shared CHannel (PDSCH) transmission is repeated in consecutive frames a predetermined number of frames following receipt. This repeat ACK/NAK causes a problem when a PSCCH transmission directed to the same user equipment occurs in consecutive subframes. In a first embodiment, the first ACK/NAK response repeats preempting any ACK/NAK response to the later PDSCH transmission. In a second embodiment, the first ACK/NAK response does not repeat and the ACK/NAK response to the later PDSCH transmission occurs.
These and other aspects of this invention are illustrated in the drawings, in which:
The current specification in Evolved Universal Terrestrial Radio Access Network (E-UTRAN) ver. 8 on ACK/NAK repetition indicates that for Frequency Division Duplex (FDD), the UE shall upon detection of a Physical Downlink Shared CHannel (PDSCH) transmission in down link (DL) subframe n−4 intended for that UE for which an ACK/NACK is required, shall transmit the ACK/NACK response in up link (UL) subframe n. If ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 intended for the UE for which ACK/NACK response is require, and if the UE is not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3, . . . , n−5 the UE shall transmit only the ACK/NACK response corresponding to the detected PDSCH transmission in subframe n−4 on PUCCH in subframes n, n+1, . . . , n+NANRep−1. The UE shall not transmit any other signal including any ACK/NACK response corresponding to any detected PDSCH transmission in subframes n-NANRep−3, . . . , n−5.
There are three options to resolve this ambiguity. The first option keep the specification as it is. This option potentially leads to uncertain UE behavior, regarding the ACK/NAK transmission in subframe n+2 corresponding to the PDSCH received in subframe n−3 as illustrated in
Claims
1-8. (canceled)
9. A method, comprising:
- detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3,..., n−5: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1,..., n+NANRep−1; not transmitting any other signal in subframes n, n+1,..., n+NANRep−1; and not transmitting any ACK/NACK response repetitions corresponding to any detected PDSCH transmission in subframes n−3,..., n+NANRep−5.
10. A method, comprising:
- detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3,..., n−5: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1,..., n+NANRep−1; not transmitting any other signal in subframes n, n+1,..., n+NANRep−1; and not transmitting any ACK/NACK response repetitions corresponding to any detected PDSCH transmission in subframes n−3,..., n+NANRep−5.
11. A method, comprising:
- detecting in a user equipment (UE) a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4 intended for the UE;
- transmitting from the UE an ACK/NACK response to the PDSCH transmission in subframe n; and
- when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3,..., n−5: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, on PUCCH in subframes n, n+1,..., n+NANRep−1; not transmitting any other signal in subframes n, n+1,..., n+NANRep−1; and not transmitting any ACK/NACK response repetitions corresponding to any detected PDSCH transmission in subframes n−3,..., n+NANRep−5.
12. A method, comprising:
- detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1; not transmitting any other signal in subframes n, n+1; and not transmitting any ACK/NACK response corresponding to any detected PDSCH transmission in subframe n−3.
13. A method, comprising:
- detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1; not transmitting any other signal in subframes n, n+1; and not transmitting any ACK/NACK response corresponding to any detected PDSCH transmission in subframe n−3.
14. A method, comprising:
- detecting in a user equipment (UE) a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4 intended for the UE;
- transmitting from the UE an ACK/NACK response to the PDSCH transmission in subframe n; and
- when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n−3: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, on PUCCH in subframes n, n+1; not transmitting any other signal in subframes n, n+1; and not transmitting any ACK/NACK response corresponding to any detected PDSCH transmission in subframes n−3.
15. A user equipment (UE), comprising:
- circuitry for detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- circuitry for transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- circuitry for, when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3,..., n−5: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1,..., n+NANRep−1; not transmitting any other signal in subframes n, n+1,..., n+NANRep−1; and not transmitting any ACK/NACK response repetitions corresponding to any detected PDSCH transmission in subframes n−3,..., n+NANRep−5.
16. A user equipment (UE), comprising:
- circuitry for detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- circuitry for transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- circuitry for, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3,..., n−5: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1,..., n+NANRep−1; not transmitting any other signal in subframes n, n+1,..., n+NANRep−1; and not transmitting any ACK/NACK response repetitions corresponding to any detected PDSCH transmission in subframes n−3,..., n+NANRep−5.
17. A user equipment (UE), comprising:
- circuitry for detecting in a user equipment (UE) a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4 intended for the UE; circuitry for transmitting from the UE an ACK/NACK response to the PDSCH transmission in subframe n; and
- circuitry for, when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n-NANRep−3,..., n−5: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, on PUCCH in subframes n, n+1,..., n+NANRep−1; not transmitting any other signal in subframes n, n+1,..., n+NANRep−1; and not transmitting any ACK/NACK response repetitions corresponding to any detected PDSCH transmission in subframes n−3,..., n+NANRep−5.
18. A user equipment (UE), comprising:
- circuitry for detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- circuitry for transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- circuitry for, when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1; not transmitting any other signal in subframes n, n+1; and not transmitting any ACK/NACK response corresponding to any detected PDSCH transmission in subframe n−3.
19. A user equipment (UE), comprising:
- circuitry for detecting a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4;
- circuitry for transmitting an ACK/NACK response to the PDSCH transmission in subframe n; and
- circuitry for, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, in subframes n, n+1; not transmitting any other signal in subframes n, n+1; and not transmitting any ACK/NACK response corresponding to any detected PDSCH transmission in subframe n−3.
20. A user equipment (UE), comprising:
- circuitry for detecting in a user equipment (UE) a Physical Downlink Shared CHannel (PDSCH) transmission in subframe n−4 intended for the UE;
- circuitry for transmitting from the UE an ACK/NACK response to the PDSCH transmission in subframe n; and
- circuitry for, when ACK/NACK repetition is enabled, upon detection of a PDSCH transmission in subframe n−4 for which an ACK/NACK response shall be provided, and when not repeating the transmission of any ACK/NACK in subframe n corresponding to a PDSCH transmission in subframes n−3: transmitting only the ACK/NACK response, corresponding to the detected PDSCH transmission in subframe n−4, on PUCCH in subframes n, n+1; not transmitting any other signal in subframes n, n+1; and not transmitting any ACK/NACK response corresponding to any detected PDSCH transmission in subframes n−3.
21. The method of claim 9, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
22. The method of claim 10, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
23. The method of claim 11, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
24. The method of claim 12, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
25. The method of claim 13, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
26. The method of claim 14, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
27. The user equipment of claim 15, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
28. The user equipment of claim 16, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
29. The user equipment of claim 17, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
30. The user equipment of claim 18, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
31. The user equipment of claim 19, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
32. The user equipment of claim 20, wherein the ACK/NACK response is transmitted on a Physical Uplink Control CHannel (PUCCH).
Type: Application
Filed: Jul 14, 2015
Publication Date: Nov 5, 2015
Inventor: ZUKANG SHEN (Richardson, TX)
Application Number: 14/747,934