Computing apparatus with cross-subframe scheduling

Patent metadata

Field	Value
Publication number	US-2016134403-A1
Application number	US-201514711701-A
Country	US
Kind code	A1
Filing date	May 13, 2015
Priority date	Nov 6, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

The present disclosure describes embodiments of apparatuses, systems, and methods for cross sub-frame by enhanced physical downlink control channel (EPDCCH) transmissions for scheduling of physical downlink share channel (PDSCH) transmissions one or more subframes after the EPDCCH transmission. Cross subframe scheduling may be useful for machine type communication (MTC) user equipment (UE) with reduced bandwidth support including half duplex type MTC UE operating at 1.4 MHz bandwidth.

First claim

What is claimed is:

1 . A computing apparatus comprising:
scheduling circuitry to produce an enhanced physical downlink control channel (EPDCCH) transmission to be transmitted in a first subframe and a physical downlink shared channel (PDSCH) transmission to be transmitted in a second subframe, wherein the EPDCCH transmission is to schedule the PDSCH transmission and the second subframe is one or more subframes after the first subframe; and feedback circuitry to process a hybrid automatic repeat request-ACKnowledgement (HARQ-ACK) transmission received from a user equipment in a third subframe that is four or more subframes after the first subframe, the HARQ-ACK transmission to correspond to the PDSCH transmission or to the EPDCCH transmission when the EPDCCH transmission includes a downlink semi-persistent scheduling release.

2 . The computing apparatus of claim 1 , wherein:
the scheduling circuitry is to produce a response EPDCCH transmission to be transmitted in a fourth subframe and a response PDSCH transmission to be transmitted in a fifth subframe, when the HARQ-ACK transmission is a NACK transmission; the fourth subframe is four or more subframes after the third subframe; and the fifth subframe is at least one subframe after the fourth subframe.

3 . The computing apparatus of claim 1 , wherein:
the scheduling circuitry is to produce up to two additional EPDCCH transmissions to be transmitted after the first subframe and up to two additional PDSCH transmissions respectively corresponding to the up to two additional EPDCCH transmissions and to be transmitted after the second subframe; the feedback circuitry is to process up to two additional HARQ-ACK transmissions received from the user equipment after the third subframe; and the first, second, and third subframes, and subframes with the up to two additional EPDCCH transmissions, the up to two additional PDSCH transmissions, and the up to two additional HARQ-ACK transmissions, are in the same radio frame.

4 . A computing apparatus comprising:
scheduling circuitry to produce an enhanced physical downlink control channel (EPDCCH) transmission and a physical downlink shared channel (PDSCH) transmission, wherein the EPDCCH transmission is to schedule the PDSCH transmission one or more subframes after the EPDCCH transmission; and transmitter circuitry coupled to the scheduling circuitry, the transmitter circuitry to transmit the EPDCCH transmission in a first subframe and the PDSCH transmission in a second subframe.

5 . The computing apparatus of claim 4 , wherein the PDSCH transmission carries System Information Block type x (SIBx) and x is 1 or greater and when x is 1, SIB1 is in subframe 4 or 5 of a radio frame.

6 . The computing apparatus of claim 5 , wherein the SIB1 contains time-domain scheduling information that identifies at least one subframe with a subsequent EPDCCH transmission, wherein the subsequent EPDCCH transmission schedules a subsequent PDSCH transmission with SIBy, wherein y is two or greater, wherein the subsequent PDSCH transmission is in a subframe adjacent to the subframe with the subsequent EPDCCH transmission.

7 . The computing apparatus of claim 6 , wherein the SIB1 contains a system information window (SI-window) to transmit the SIBy, wherein the computing apparatus transmits the subsequent EPDCCH transmission in a subframe before the SI-window.

8 . The computing apparatus of claim 7 , wherein the subsequent PDSCH transmission is transmitted by the computing apparatus k subframes after the subsequent EPDCCH transmission, wherein k is less than 3.

9 . The computing apparatus of claim 4 , wherein the PDSCH transmission carries a paging message.

10 . The computing apparatus of claim 9 , wherein the EPDCCH transmission is before a paging occasion.

11 . The computing apparatus of claim 9 , wherein the EPDCCH transmission is before a paging occasion and the PDSCH transmission is during the paging occasion.

12 . The computing apparatus of claim 11 , wherein the number of subframes between the EPDCCH transmission and the PDSCH transmission is indicated in a master information block.

13 . One or more non-transitory computer readable media comprising instructions to cause a computing apparatus, in response to execution of the instructions by a processor of the computing apparatus, to:
produce and schedule an enhanced physical downlink control channel (EPDCCH) transmission in a first subframe and a physical downlink shared channel (PDSCH) transmission in a second subframe scheduled one or more subframes after the first subframe, the EPDCCH transmission including scheduling of the PDSCH transmission; transmit the EPDCCH and PDSCH transmissions in respective subframes; and receive a hybrid automatic repeat request-ACKnowledgement (HARQ-ACK) transmission in a third subframe from a machine type communication user equipment (MTC UE) in response to the PDSCH transmission, wherein the third subframe is four or more subframes after first subframe.

14 . The non-transitory computer readable media of claim 13 , wherein the MTC UE is a half-duplex frequency division duplex MTC UE that receives and transmits in a 1.4 MHz bandwidth of a long term evolution system.

15 . The non-transitory computer readable media of claim 13 , wherein the instructions are further to cause the computing apparatus to:
transmit a response EPDCCH transmission four or more subframes after the HARQ-ACK transmission, wherein the response EPDCCH transmission includes a schedule of a response PDSCH transmission that is scheduled at least one subframe after the response EPDCCH transmission.

16 . The non-transitory computer readable media of claim 13 , wherein the instructions are further to cause the computing apparatus to:
perform up to three HARQ processes, wherein a HARQ process is comprised of transmit the EPDCCH transmission and the PDSCH transmission, and receive the HARQ-ACK transmission.

17 . One or more non-transitory computer readable media comprising instructions to cause a computing apparatus, in response to execution of the instructions by a processor of the computing apparatus, to:
produce an enhanced physical downlink control channel (EPDCCH) transmission and a physical downlink shared channel (PDSCH) transmission, wherein the EPDCCH transmission includes scheduling information of the PDSCH transmission, wherein the PDSCH transmission includes a paging message; schedule the EPDCCH transmission in a first subframe and the PDSCH transmission in a second subframe scheduled one or more subframes after the first subframe; and transmit the EPDCCH and PDSCH transmissions in respective subframes; receive a hybrid automatic repeat request-ACKnowledgement (HARQ-ACK) transmission in a third subframe from a user equipment (UE) in response to the PDSCH transmission, wherein the third subframe is four or more subframes after first subframe.

18 . The non-transitory computer readable media of claim 17 , wherein the instructions are further to cause the computing apparatus to:
transmit, in response to when the HARQ-ACK transmission is a NACK, a response EPDCCH transmission four or more subframes after the HARQ-ACK transmission, wherein the response EPDCCH transmission includes a schedule of a response PDSCH transmission that is scheduled at least one subframe after the response EPDCCH transmission.

19 . The non-transitory computer readable media of claim 17 , wherein the EPDCCH transmission is transmitted before a paging occasion.

20 . Th

Assignees

• Intel Ip Corp

Inventors

• Xiong Gang
• Martinez-Tarradell Marta
• Chatterjee Debdeep
• Han Seunghee

Classifications

• H04L5/0055 Primary

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L1/1896

  ARQ related signaling · CPC title

• H04W4/005

  Electricity · mapped topic

• H04L1/0027 Primary

  Scheduling of signalling, e.g. occurrence thereof · CPC title