Communications system, infrastructure equipment and method

Patent metadata

Field	Value
Publication number	US-2016174263-A1
Application number	US-201414908184-A
Country	US
Kind code	A1
Filing date	Jul 2, 2014
Priority date	Aug 5, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

A communications system communicating data to/from a user device including: infrastructure equipment forming a mobile communications network configured to transmit/receive data to/from the user device via a wireless access interface. The user device can receive an indication from the infrastructure equipment of a location and duration of a temporal response window for receiving response messages, received in response to access requests messages, transmit to the infrastructure equipment an access request message for requesting access to the wireless access interface, and receive a response message from the infrastructure equipment in response to the access request message. The infrastructure equipment can process an access request message and generate the response message, transmit the response message to the user device, and transmit the response message within the temporal response window, and the user device is configured to receive the response message within the temporal response window.

First claim

1 . A communications system for communicating data to and from a user device, the system comprising infrastructure equipment forming a mobile communications network arranged to transmit data to and receive data from the user device via a wireless access interface, the user device configured to transmit data to and receive data from the infrastructure equipment, and the user device is configured
to receive an indication from the infrastructure equipment of a location and duration of a temporal response window for receiving response messages, the response messages being received in response to access request messages, to transmit to the infrastructure equipment an access request message for requesting access to the wireless access interface, and to receive a response message from the infrastructure equipment in response to the access request message, and the infrastructure equipment is configured to transmit the indication to the user device of the location and duration of the temporal response window for receiving response messages in response to access request messages, the location and duration of the temporal response window having been determined by the infrastructure equipment, to receive the access request message from the user device, to process the access request message and generate the response message, and to transmit the response message to the user device, wherein the infrastructure equipment is configured to transmit the response message within the temporal response window, and the user device is configured to receive the response message within the temporal response window.

2 . A communications system as claimed in claim 1 , wherein the infrastructure equipment is configured
to transmit the response message within one of a plurality of temporal response windows, the plurality of temporal response windows being separated in time, and the user device is configured to receive the response message in the plurality of temporal response windows, a location and duration of the temporal response windows having been determined by the infrastructure equipment and the user device having received an indication of the location and duration of at least one of the temporal response windows from the infrastructure equipment.

3 . A communications system as claimed in claim 1 , wherein the user device is configured to transmit the access request message to the infrastructure equipment via one or more relay nodes.

4 . A communications system as claimed in claim 2 , wherein the indication of a location and duration of at least one of the response windows is transmitted from the infrastructure equipment and is received by the user device prior to the transmission of the access request message.

5 . A communications system as claimed in claim 2 , wherein the user device is configured to enter a reduced power state during the time separating the response windows.

6 . A communications system as claimed in claim 2 , wherein the infrastructure equipment is configured to transmit to the user device the indication of a location and duration of at least one of the response windows in one of the response windows.

7 . A communications system as claimed in claim 2 , wherein the user device has an identifier associated therewith and the infrastructure equipment is configured to determine the location and duration of at least one of the response windows based upon the identifier of the user device and a predetermined rule.

8 . A communications system as claimed in claim 7 , wherein the user device is configured to determine the location and duration of the at least one of the response windows based on the identifier associated therewith and the predetermined rule.

9 . A communications system as claimed in claim 1 , wherein the system is a 3GPP LIE mobile communications system.

10 . A communications system as claimed in claim 1 , wherein the access request message includes a random access preamble and the response message is a random access response.

11 . An infrastructure equipment for transmitting and receiving data to and from a user device via a wireless access interface, the infrastructure equipment configured to
to transmit an indication to the user device of a location and duration of a temporal response window for receiving response messages, the response messages being received in response to access requests messages, and the location and duration of the temporal response window having been determined by the infrastructure equipment, to receive an access request message for requesting access to the wireless access interface from the user device, to process the access request message and generate a response message, and to transmit the response message to the user device, wherein the infrastructure equipment is configured to transmit the response message in a temporal response window.

12 . An infrastructure equipment as claimed in claim 11 , wherein the infrastructure equipment is configured to transmit the response message within one of a plurality of temporal response windows, the plurality of response windows separated in time, a location and duration of the response windows having been determined by the infrastructure equipment and an indication of the location of duration of at least one of the response windows having been transmitted to the user device.

13 . A method for communicating data to and or from an infrastructure equipment from and or to a user device via a wireless access interface, the method comprising
transmitting an indication to the user device of a location and duration of a temporal response window for receiving response messages, the response messages being received in response to access request messages and the location and duration of the temporal response window having been determined by the infrastructure equipment, receiving at the user device the indication from the infrastructure equipment of a location and duration of a temporal response window, transmitting an access request message for requesting access to the wireless access interface to the infrastructure equipment from the user device, receiving the access request message from the user device at the infrastructure equipment, processing the access request message and generating a response message at the infrastructure equipment, transmitting the response message from the infrastructure equipment to the user device, and receiving the response message at the user device, wherein the method comprises transmitting the response message within the temporal response window, and receiving at the user device the response message in the temporal response window.

14 . (canceled)

15 . A communications system for communicating data to and from a user device, the system comprising infrastructure equipment forming a mobile communications network arranged to transmit data to and receive data from the user device via a wireless access interface, the user device configured to transmit data to and receive data from the infrastructure equipment, and the user device is configured
to transmit to the infrastructure equipment an access request message for requesting access to the wireless access interface, and to receive a response message from the infrastructure equipment in response to the access request message, and the infrastructure equipment is configured to receive the access request message from the user device, to process the access request message and generate the response message, and to transmit the response message to the user device, wherein the infrastructure equipment is configured to transmit the response me

Assignees

• Sony Corp

Inventors

• Webb Matthew William

Classifications

• H04W74/006 Primary

  in the downlink, i.e. towards the terminal · CPC title

• H04W74/0833 Primary

  Random access procedures, e.g. with 4-step access · CPC title