Uplink procedures on a shared communication medium

Patent metadata

Field	Value
Publication number	US-2017359815-A1
Application number	US-201715617697-A
Country	US
Kind code	A1
Filing date	Jun 8, 2017
Priority date	Jun 10, 2016
Publication date	Dec 14, 2017
Grant date	—

Abstract

The present disclosure relates generally to uplink procedures on a shared communication medium. In an aspect, an access terminal receives a downlink subframe from an access point on the shared communication medium and, in response to receiving the downlink subframe, transmits uplink control information (UCI) for the downlink subframe on a first uplink subframe of a first UCI channel of a plurality of UCI channels.

First claim

1 . A method of communicating on a shared communication medium, comprising:
receiving, at an access terminal, a downlink subframe from an access point on the shared communication medium; and in response to receiving the downlink subframe, transmitting, by the access terminal, uplink control information (UCI) for the downlink subframe on a first uplink subframe of a first UCI channel of a plurality of UCI channels.

2 . The method of claim 1 , wherein the first UCI channel is a first available UCI channel of the plurality of UCI channels.

3 . The method of claim 2 , wherein the access terminal does not repeat transmission of the UCI on another channel of the plurality of UCI channels.

4 . The method of claim 1 , wherein the access terminal is configured to transmit all UCI for all received downlink frames on the first UCI channel, regardless of availability of other UCI channels of the plurality of UCI channels.

5 . The method of claim 1 , further comprising:
in response to receiving the downlink subframe, transmitting, by the access terminal, the UCI on a second uplink subframe of a second UCI channel of the plurality of UCI channels, wherein the UCI is transmitted on the second uplink subframe of the second UCI channel only before expiration of a configured time duration.

6 . The method of claim 5 , wherein the access terminal does not repeat transmission of the UCI on another channel of the plurality of UCI channels after the expiration of the configured time duration.

7 . The method of claim 5 , wherein the configured time duration is configured by the access point.

8 . The method of claim 1 , wherein the access terminal selects the first UCI channel without input from the access point based on characteristics of the plurality of UCI channels.

9 . The method of claim 8 , wherein the characteristics of the plurality of UCI channels include payload capabilities of the plurality of UCI channels, interference on the plurality of UCI channels, link budget conditions of the plurality of UCI channels, or any combination thereof.

10 . The method of claim 1 , wherein the UCI is contained in a UCI payload, and wherein the UCI payload contains UCI for multiple downlink subframes.

11 . The method of claim 10 , wherein uplink resources on the first UCI channel are allocated semi-statically to the access terminal.

12 . The method of claim 10 , wherein uplink resources on the first UCI channel are dynamically allocated in the downlink subframe.

13 . The method of claim 12 , wherein the dynamic allocation of the uplink resources indicates:
a first grant-based uplink resource and a second grant-based uplink resource in the downlink subframe, the first grant-based uplink resource and the second grant-based resource semi-statically, the first grant-based uplink resource in the downlink subframe and the second grant-based resource semi-statically, or the second grant-based uplink resource in the downlink subframe and the first grant-based resource semi-statically.

14 . An apparatus for communicating on a shared communication medium, comprising:
a transceiver of an access terminal configured to receive a downlink subframe from an access point on the shared communication medium; and at least one processor of the access terminal configured to cause the transceiver to transmit, in response to reception of the downlink subframe, uplink control information (UCI) for the downlink subframe on a first uplink subframe of a first UCI channel of a plurality of UCI channels.

15 . The apparatus of claim 14 , wherein the first UCI channel is a first available UCI channel of the plurality of UCI channels.

16 . The apparatus of claim 15 , wherein the access terminal does not repeat transmission of the UCI on another channel of the plurality of UCI channels.

17 . The apparatus of claim 14 , wherein the access terminal is configured to transmit all UCI for all received downlink frames on the first UCI channel, regardless of availability of other UCI channels of the plurality of UCI channels.

18 . The apparatus of claim 14 , wherein the at least one processor is further configured to:
cause the transceiver to transmit, in response to reception of the downlink subframe, the UCI on a second uplink subframe of a second UCI channel of the plurality of UCI channels, wherein the UCI is transmitted on the second uplink subframe of the second UCI channel only before expiration of a configured time duration.

19 . The apparatus of claim 18 , wherein the access terminal does not repeat transmission of the UCI on another channel of the plurality of UCI channels after the expiration of the configured time duration.

20 . The apparatus of claim 18 , wherein the configured time duration is configured by the access point.

21 . The apparatus of claim 14 , wherein the access terminal selects the first UCI channel without input from the access point based on characteristics of the plurality of UCI channels.

22 . The apparatus of claim 21 , wherein the characteristics of the plurality of UCI channels include payload capabilities of the plurality of UCI channels, interference on the plurality of UCI channels, link budget conditions of the plurality of UCI channels, or any combination thereof.

23 . The apparatus of claim 14 , wherein the UCI is contained in a UCI payload, and wherein the UCI payload contains UCI for multiple downlink subframes.

24 . The apparatus of claim 23 , wherein uplink resources on the first UCI channel are allocated semi-statically to the access terminal.

25 . The apparatus of claim 23 , wherein uplink resources on the first UCI channel are dynamically allocated in the downlink subframe.

26 . The apparatus of claim 25 , wherein the dynamic allocation of the uplink resources indicates:
a first grant-based uplink resource and a second grant-based uplink resource in the downlink subframe, the first grant-based uplink resource and the second grant-based resource semi-statically, the first grant-based uplink resource in the downlink subframe and the second grant-based resource semi-statically, or the second grant-based uplink resource in the downlink subframe and the first grant-based resource semi-statically.

27 . An apparatus for communicating on a shared communication medium, comprising:
a communication means of an access terminal configured to receive a downlink subframe from an access point on the shared communication medium; and a processing means of the access terminal configured to cause the communication means to transmit, in response to reception of the downlink subframe, uplink control information (UCI) for the downlink subframe on a first uplink subframe of a first UCI channel of a plurality of UCI channels.

28 . A non-transitory computer-readable medium storing computer-executable instructions for communicating on a shared communication medium, the computer-executable instructions comprising:
at least one instruction to cause an access terminal to receive a downlink subframe from an access point on the shared communication medium; and at least one instruction to cause the access terminal to transmit, in response to reception of the downlink subframe, uplink control information (UCI) for the downlink subframe on a first uplink subframe of a first UCI channel of a plurality of UCI channels.

Assignees

• Qualcomm Inc

Inventors

• Chendamarai Kannan Arumugam
• Patel Chirag Sureshbhai
• Luo Tao
• Kadous Tamer Adel

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L1/1822 Primary

  involving configuration of automatic repeat request [ARQ] with parallel processes · CPC title

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title