Coordinated resource reservation for ultra-reliable low latency communication

Patent metadata

Field	Value
Publication number	US-2022014981-A1
Application number	US-201817291568-A
Country	US
Kind code	A1
Filing date	Nov 6, 2018
Priority date	Nov 6, 2018
Publication date	Jan 13, 2022
Grant date	—

Abstract

There is provided an apparatus, said apparatus comprising means for, at a first network entity, determining that first resources scheduled for use by a first cell for communication with a user equipment are available at a second cell, receiving an indication from the user equipment to trigger handover from the first cell to the second cell and causing handover of the user equipment from the first cell to the second cell such that the second cell uses the first resources for communication with the user equipment.

First claim

1 . (canceled)

2 . An apparatus according to claim 15 , wherein the at least one memory and computer program code are further configured to, with the at least one further processor, cause the apparatus to receive, at the first network entity, an indication of mobility for the user equipment.

3 . An apparatus according to claim 2 , wherein the indication of mobility comprises an indication of at least one potential target cell.

4 . An apparatus according to claim 15 , wherein the at least one memory and computer program code are further configured to, with the at least one processor, cause the apparatus to cause the handover by providing a handover command to the user equipment, the handover command comprising an indication of the first resources.

5 . An apparatus according to claim 15 , wherein the first network entity is a centralised unit and the first cell and the second cell comprise distributed units.

6 . An apparatus according to 15 , wherein the first cell comprises a first base station, the second cell comprises a second base station and the first base station comprises the first network entity.

7 . An apparatus according to claim 6 , wherein the at least one memory and computer program code are further configured tom with the at least one further processor, cause the apparatus to provide an indication of the first resources to the second base station.

8 . An apparatus according to claim 6 , wherein the at least one memory and computer program code are further configured to, with the at least one further processor, cause the apparatus to determine that first resources scheduled for use by the first cell for communication with the user equipment are available at the second cell by providing a request from the first base station to the second base station whether the first resources are available and receiving a response at the first base station indicating that the first resources are available.

9 . An apparatus according to claim 8 , wherein the at least one memory and computer program code are further configured to, with the at least one further processor, cause the apparatus to determine that first resources scheduled for use by the first cell for communication with the user equipment are available at the second cell by receiving, if the first resources are scheduled for use by the second cell for lower priority traffic, an indication, from the second base station in response to the request, that the first resources are available.

10 . An apparatus according to claim 6 , wherein the at least one memory and computer program code are further configured to, with the at least one further processor, cause the apparatus to determine that first resources scheduled for use by the first cell for communication with the user equipment are available at the second cell by providing a request from the first base station to the second base station whether second resources are available and receiving a response at the first base station indicating that the second resources are unavailable and that the first resources are available.

11 . An apparatus according to claim 15 , wherein the first resources are semi persistent scheduling resources.

12 . An apparatus according to claim 15 , wherein the first resources comprise time domain resources.

13 . An apparatus according to claim 15 , wherein the communication with a user equipment comprises time sensitive networking traffic.

14 . A method comprising, at a first network entity:
determining that first resources scheduled for use by a first cell for communication with a user equipment are available at a second cell; receiving an indication from the user equipment to trigger handover from the first cell to the second cell; and causing handover of the user equipment from the first cell to the second cell such that the second cell uses the first resources for communication with the user equipment.

15 . An apparatus comprising: at least one processor and at least one memory including a computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus at least to:
determine that first resources scheduled for use by a first cell for communication with a user equipment are available at a second cell; receive an indication from the user equipment to trigger handover from the first cell to the second cell; and cause handover of the user equipment from the first cell to the second cell such that the second cell uses the first resources for communication with the user equipment.

16 . A computer readable medium comprising program instructions for causing an apparatus to perform at least the following:
determining that first resources scheduled for use by a first cell for communication with a user equipment are available at a second cell; receiving an indication from the user equipment to trigger handover from the first cell to the second cell; and causing handover of the user equipment from the first cell to the second cell such that the second cell uses the first resources for communication with the user equipment.

17 . A method according to claim 14 , wherein the first cell comprises a first base station, the second cell comprises a second base station and the first base station comprises the first network entity.

18 . A method according to claim 17 , further comprising providing an indication of the first resources to the second base station.

19 . A method according to claim 17 , wherein determining that first resources scheduled for use by the first cell for communication with the user equipment are available at the second cell comprises providing a request from the first base station to the second base station whether the first resources are available and receiving a response at the first base station indicating that the first resources are available.

20 . A method according to claim 19 , wherein determining that first resources scheduled for use by the first cell for communication with the user equipment are available at the second cell further comprises receiving, if the first resources are scheduled for use by the second cell for lower priority traffic, an indication, from the second base station in response to the request, that the first resources are available.

21 . A method according to claim 17 , wherein determining that first resources scheduled for use by the first cell for communication with the user equipment are available at the second cell comprises providing a request from the first base station to the second base station whether second resources are available and receiving a response at the first base station indicating that the second resources are unavailable and that the first resources are available.

Assignees

• Nokia Solutions & Networks Oy

Inventors

• Pedersen Klaus Ingemann
• Kolding Troels Emil

Classifications

• H04W36/08

  Reselecting an access point · CPC title

• H04W36/0072 Primary

  of resource information of target access point · CPC title

• H04W36/0061

  of neighbour cell information · CPC title

• H04L1/1887 Primary

  Scheduling and prioritising arrangements · CPC title

• H04W36/00837

  Determination of triggering parameters for hand-off · CPC title