Method of mobility based on prediction and pre-preparation

Patent metadata

Field	Value
Publication number	US-11265696-B2
Application number	US-202017111731-A
Country	US
Kind code	B2
Filing date	Dec 4, 2020
Priority date	Jun 7, 2018
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

Example methods for communicating based on route prediction and pre-preparation in a wireless network are provided. One example method includes determining, by a network entity, a predicted time of entering and a predicted duration of stay of a user equipment (UE) in each cell of a plurality of cells according to a predicted route of the UE, the predicted route including predicted UE locations at corresponding predicted times. The network entity can then determine mobility prediction information according to the predicted time of entering and the predicted duration of stay of the UE in each cell of the plurality of cells. The network entity can then transmit 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 cell 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 predicted duration of stay of the UE in each cell 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 the predicted time of entering and the 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 one of the remainder of the plurality of cells.

3. The method of claim 1 , further comprising determining a time of entering of each beam of a plurality of beams in each cell of the plurality of cells or determining a time of entering of each transmit receive point (TRP) of a plurality of TRPs in each cell of the plurality of cells.

4. The method of claim 1 , wherein the mobility prediction information comprises at least one of a cell identification of each cell of the plurality of cells, a synchronization signal block ID (SSB_ID) of each wide beam of a plurality of wide beams of cells or TRPs, or a channel state information-reference signal (CSI-RS) ID of each beam of a plurality of beams in each cell 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, wherein the scheduled reservations and scheduled actions are determined according to the predicted time of entering and the predicted duration of stay of the UE in each cell of the 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, wherein the updated mobility prediction information is 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 and according to the UE feedback, that an actual location of the UE differs from the predicted location by more than a threshold value; and
transmitting, by the network entity, updated mobility prediction information to the UE.

8. The method of claim 1 , further comprising:
transmitting, by the network entity, a UE cell-radio network temporary identifier (C-RNTI) schedule when a global C-RNTI is reserved to the UE in a specified cell to a gNB of the specified cell; and
transferring, by the network entity, context of the UE to the gNB of the specified cell following the UE C-RNTI schedule, 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, mobility prediction information, the mobility prediction information comprising a predicted time of entering each cell of a plurality of cells for the UE, a predicted duration of stay within each cell of the plurality of cells for the UE, and at least one configuration associated with at least one of a cell, a transmit receive point (TRP), or a beam in the plurality of cells for the UE, wherein the predicted time of entering, the predicted duration of stay, and the at least one configuration are 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 a corresponding 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 a predicted time and location pair for the at least one of the cell, the TRP, or the beam differs from an actual time and location pair of the at least one of the cell, the TRP, or the beam is greater than a threshold, wherein the predicted time and location pair is determined according to a mobility prediction information message.

11. The method of claim 9 , wherein the at least one 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 UL TX resources in effect at current time duration according to a schedule in a mobility prediction information message.

13. The method of claim 9 , further comprising:
performing random-access channel RACH-less access and direct data 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 a 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 a mobility prediction information message.

16. The method of claim 9 , wherein the UE maintains same cell-radio network temporary identifier (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 instructions instruct the one or more processors to:
receive mobility prediction information, the mobility prediction information comprising a predicted time of entering each cell of a plurality of cells for a user equipment (UE), a predicted duration of stay within each cell of the plurality of cells for the UE, and at least one configuration associated with at least one of a cell, a transmit receive point (TRP), or a beam in the plurality of cells for the UE, wherein the predicted time of entering, the predicted duration of stay, and the at least one configuration are determined according to a predicted route of the UE, the predicted route comprising predicted UE locations at corresponding predicted times; and
set parameters of UE components to facilitate communication with one of the plurality of cells at a corresponding predicted time of entering the one of the plurality of cells according to the mobility prediction information.

18. The apparatus according to claim 17 , wherein the instructions instruct the o

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

• H04W4/029

  Location-based management or tracking services · CPC title

• H04W8/08 Primary

  Mobility data transfer · 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