Communications system

• US 10,694,436 B2
• Filed: 07/03/2019
• Issued: 06/23/2020
• Est. Priority Date: 02/04/2008
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Serravalle, Francesca
• Primary Examiner(s): Patel, Ajit
• Application Number:
  US16/503,096
• Publication Number:
  US 20190327652A1
• Time in Patent Office: 356 Days
• Field of Search: None
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0066 of control information between different types of networks in order to establish a new radio link in the target network
• CPC Class Codes: H04W 36/008375 based on historical data
• CPC Class Codes: H04W 36/0094 Definition of hand-off measurement parameters
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/165 for reducing network power consumption H04W36/18 - H04W36/22 take precedence
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A user communications device having active and idle states operates in a cellular communications network in which user communications devices communicate via network communications devices of cells of the network. History data identifying the cells in which the user communications device has been present whilst in the idle state is maintained. This history data is used by the user communications device or by a network communications device to enable adjustment of cell selection/reselection parameters for the user communications device in the active state.

Claims

1. A method performed by a user equipment (UE), the method comprising:

performing UE measurement logging in an idle mode for reporting to a base station at a later point in time, wherein;

logged UE measurements are sent in a logged measurement report when the UE is in a radio resource control (RRC) connected state, and

the logged measurement report comprises;

the logged UE measurements performed in idle for at least one of intra-frequency, inter-frequency, or inter-radio access technology (inter-RAT) operations;

a time stamp for a UE measurement; and

location information of the UE.

2. A user equipment (UE), comprising:

transceiver circuitry; and

a controller configured to control the user equipment to perform UE measurement logging in an idle mode for reporting to a base station at a later point in time, wherein;

logged UE measurements are sent, by the transceiver circuitry, in a logged measurement report when the UE is in a radio resource control (RRC) connected state, and

the logged measurement report comprises;

the logged UE measurements performed in idle for at least one of intra-frequency, inter-frequency, or inter-radio access technology (inter-RAT) operations;

a time stamp for a UE measurement; and

location information of the UE.

3. A method performed by a base station, the method comprising:

receiving from a user equipment (UE), when the UE is in a radio resource control (RRC) connected state, a logged measurement report, wherein;

the logged measurement report reports UE measurements logged by the UE, when in an idle mode, for reporting to a base station at a later point in time, and

the logged measurement report comprises;

the logged UE measurements performed in idle for at least one of intra-frequency, inter-frequency, or inter-radio access technology (inter-RAT) operations;

a time stamp for a UE measurement; and

location information of the UE.

4. A base station comprising:

transceiver circuitry; and

a controller configured to control the base station to receive from a user equipment (UE), when the UE is in a radio resource control (RRC) connected state, a logged measurement report, wherein;

the logged measurement report reports UE measurements logged by the UE, when in an idle mode, for reporting to a base station at a later point in time, and

the logged measurement report comprises;

the logged UE measurements performed in idle for at least one of intra-frequency, inter-frequency, or inter-radio access technology (inter-RAT) operations;

a time stamp for a UE measurement; and

location information of the UE.