Method of mobility based on prediction and pre-preparation

Patent metadata

Field	Value
Publication number	US-2021092584-A1
Application number	US-202017111731-A
Country	US
Kind code	A1
Filing date	Dec 4, 2020
Priority date	Jun 7, 2018
Publication date	Mar 25, 2021
Grant date	—

Abstract

A method for UE mobility based on route prediction and pre-preparation. In an embodiment, a method for resource allocation in a wireless network includes obtaining, at a network entity, a predicted route for a user equipment (UE). The method also includes determining, by the network entity, a predicted time of entering and a predicted duration of stay of the UE in each of a plurality of cells. Each of the plurality of cells includes a gNB. The method also includes determining, by the network entity, mobility prediction information according to the predicted time of entering and the duration of stay of the UE in each of the plurality of cells. The method also includes transmitting, by the network entity, the mobility prediction information to the UE.

First claim

What is claimed is:

1 . A method for communicating based on prediction and pre-preparation in a wireless network, comprising:
determining, by a network entity, a predicted time of entering and a predicted duration of stay of a user equipment (UE) in each of a plurality of cells according to a predicted route of the UE, the predicted route comprising predicted UE locations at corresponding predicted times; determining, by the network entity, mobility prediction information according to the predicted time of entering and the duration of stay of the UE in each of the plurality of cells; and transmitting, by the network entity, the mobility prediction information to the UE.

2 . The method of claim 1 , wherein the determining a predicted time of entering and a predicted duration of stay comprises: determining a first predicted time of entering of a first cell in the plurality of cells and determining a predicted elapsed time between entering the first cell in the plurality of cells and entering the one of the remainder of the plurality of cells.

3 . The method of claim 1 , further comprising determining a time of entering of each of a plurality of beams or TRPs in each of the plurality of cells.

4 . The method of claim 1 , wherein the mobility prediction information comprises at least one of the following: a cell identification of each of the plurality of cells, an SSB_ID of each of the plurality the wide beams of cells or TRPs, and a CSI-RS ID of each of the beams in each of the plurality of cells.

5 . The method of claim 1 , further comprising transmitting, by the network entity, scheduled reservations and scheduled actions to nodes on the predicted route, the scheduled reservations and scheduled actions determined according to the predicted time of entering and the predicted duration of stay of the UE in each of a plurality of cells on the predicted route.

6 . The method of claim 1 , further comprising:
receiving, by the network entity, a location updated message or a location updated signal from the UE, when an actual location of the UE differs from a predicted location of the UE by a threshold value; and transmitting, by the network entity, updated mobility prediction information to the UE, the updated mobility prediction information determined according to the location updated message or the location updated signal.

7 . The method of claim 1 , further comprising:
receiving, by the network entity, UE feedback, the UE feedback including time and location data for the UE; determining, by the network entity, that an actual location of the UE differs from a predicted location by more than a threshold value determined according to the UE feedback; and transmitting, by the network entity, updated mobility prediction information to the UE, the updated mobility prediction information.

8 . The method of claim 1 , further comprising:
transmitting, by the network entity, a UE C-RNTI schedule of when the global C-RNTI is reserved to the UE in a specified cell to a TRP for the specified; and transferring, by the network entity, the context of the UE to the gNB of the specified cell following the same schedule of the C-RNTI reservation, wherein the context of the UE is released at the same time as when the C-RNTI is released at the specified cell.

9 . A method in a user equipment (UE) for communicating in a network, comprising:
receiving, at the UE, a mobility prediction information, the mobility prediction information comprising a predicted time of entering each of the plurality of cells for the UE, a predicted duration of stay within each of the plurality of cells for the UE, and at least one configuration associated with at least one cell, transmit receive point (TRP), or beam in the plurality of cells for the UE, the predicted time of entering, the predicted duration of stay, and the configuration determined according to a predicted route of the UE, the predicted route comprising predicted UE locations at corresponding predicted times; and setting, by the UE, parameters of UE components to facilitate communication with one of the plurality of cells at the predicted time of entering the one of the plurality of cells according to the mobility prediction information.

10 . The method of claim 9 , further comprising:
reporting, by the UE, a time and location update when the a predicted time and location pair for the one of the cell, TRP, or beam differs from an actual time and location pair of the one of the cell, TRP, or beam is greater than a threshold, wherein the predicted time and location pair determined according to the mobility prediction information message.

11 . The method of claim 9 , wherein the configuration comprises beam associated uplink (UL) transmission (TX) resources including UL random access occasions and direct data TX opportunities, UL timing advance (TA) for UL transmission, downlink (DL) paging occasions, and DL direct data monitoring opportunities.

12 . The method of claim 9 , further comprising:
conducting UL access or direct data transmission with pre-configured uplink (UL) transmission (TX) resources in effect at current time duration according to the schedule in the mobility prediction information message.

13 . The method of claim 9 , further comprising:
performing RACH less access and direct data transmission (TX) with pre-determined and scheduled TA corresponding to current time.

14 . The method of claim 9 , further comprising:
monitoring, by the UE, opportunities to receive paging messages or DL direct TX data according to a scheduled pre-configuration of paging or direct TX opportunities determined according to the mobility prediction information message.

15 . The method of claim 9 , further comprising:
changing, by the UE, UE behavior according to pre-configured and scheduled instructions embedded in the mobility prediction information message.

16 . The method of claim 9 , wherein the UE maintains the same C-RNTI on a pre-scheduled route across different cells on the pre-scheduled route.

17 . An apparatus, comprising:
a non-transitory memory storage comprising instructions; and one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute instructions for implementing a method as follows: receiving a mobility prediction information, the mobility prediction information comprising a predicted time of entering each of the plurality of cells for a user equipment (UE), a predicted duration of stay within each of the plurality of cells for the UE, and at least one configuration associated with at least one cell, transmit receive point (TRP), or beam in the plurality of cells for the UE, the predicted time of entering, the predicted duration of stay, and the configuration determined according to a predicted route of the UE, the predicted route comprising predicted UE locations at corresponding predicted times; and setting parameters of UE components to facilitate communication with one of the plurality of cells at the predicted time of entering the one of the plurality of cells according to the mobility prediction information.

18 . The apparatus according to claim 17 , further configured to report a time and location update when the a predicted time and location pair for the one of the cell, TRP, or beam differs from an actual time and location pair of the one of the cell, TRP, or beam is greater than a threshold, wherein the predicted time and location pair determined according to the mobility prediction information message.

Assignees

• Huawei Tech Co Ltd

Inventors

• Zou Jialin
• Zeng Qinghai

Classifications

• H04W74/0833

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

• H04W36/008375 Primary

  based on historical data · CPC title

• H04W28/0226

  based on location or mobility (handoff or reselection H04W36/00; mobile application services making use of the location of users or terminals H04W4/02) · CPC title

• H04W4/029

  Location-based management or tracking services · CPC title

• H04W8/08 Primary

  Mobility data transfer · CPC title