USER DEVICE FOR COMMUNICATING DATA AND METHOD

• US 20170251495A1
• Filed: 05/12/2017
• Published: 08/31/2017
• Est. Priority Date: 08/05/2013
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: WEBB, Matthew William
• Granted Patent: US 10,091,814 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A user device for transmitting and receiving data to and from an infrastructure equipment via a wireless access interface. 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 and the location and duration of the temporal response window having been determined by the infrastructure equipment. The user device is configured to transmit an access request message for requesting access to the wireless access interface to the infrastructure equipment, and to receive a response message in response to the access request message from the infrastructure equipment, wherein the user device is configured to receive the response message in the temporal response window.

Claims

1. A user device for transmitting and receiving data to and from an infrastructure equipment via a wireless access interface, the user device 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 and the location and duration of the temporal response window having been determined by the infrastructure equipment,

to transmit an access request message for requesting access to the wireless access interface to the infrastructure equipment, and

to receive a response message in response to the access request message from the infrastructure equipment, wherein

the user device is configured to receive the response message in the temporal response window.

2. A user device as claimed in claim 1, wherein the user device is configured to receive the response message in one or more of a plurality of temporal response windows, the plurality of response windows separated in time, 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 a location and duration of at least one of the response windows from the infrastructure equipment.

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

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

7. A user device 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, and 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.

8. A user device as claimed in claim 1, wherein the user device is a 3GPP LTE compliant device.

9. A user device as claimed in claim 1, wherein the access request message includes a random access preamble and the response message is a random access response.

10. A method for transmitting and receiving data from and to a user device to and from an infrastructure equipment via a wireless access interface, the method comprising

receiving 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 and the location and duration of the temporal response window having been determined by the infrastructure equipment,

transmitting an access request message for requesting access to the wireless access interface to the infrastructure equipment from the user device, and

receiving a response message in response to the access request message from the infrastructure equipment at the user device, wherein the method comprises

receiving the response message at the user device in the temporal response window.

11. A user device for transmitting and receiving data to and from an infrastructure equipment via a wireless access interface, the user device configured

to transmit an access request message for requesting access to the wireless access interface to the infrastructure equipment, and

to receive a response message in response to the access request message from the infrastructure equipment, wherein

the user device is configured to receive the response message within one or more of a plurality of temporal response windows, the plurality of response windows separated in time and the user device having been provided with an indication of the location and duration of at least one of the plurality of temporal response windows.

12. A user device as claimed in claim 11, wherein the user device is configured to transmit the access request message to the infrastructure equipment via one or more relay nodes.

13. A user device as claimed in claim 11, wherein the user device is configured to enter a reduced power state during the time separating the response windows.

14. A user device as claimed in claim 11, wherein the access request message includes a random access preamble and the response message is a random access response.