Sleep-state for mobile terminal and service initiation for mobile terminals in sleep-state

• US 10,117,138 B2
• Filed: 04/18/2018
• Issued: 10/30/2018
• Est. Priority Date: 03/27/2006
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Inventors: Bachmann, Jens, Weniger, Kilian, Hakenberg, Rolf
• Primary Examiner(s): Nealon, William
• Application Number:
  US15/956,680
• Publication Number:
  US 20180242207A1
• Time in Patent Office: 195 Days
• Field of Search: 455436
• CPC Class Codes: H04W 36/0055 Transmission or use of information for re-establishing the radio link
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention relates to the initiation of a service to a mobile terminal capable of communicating via at least a first and second access network. Further, the invention relates to a reduction of power consumption of mobile terminals supporting connectivity to at least two access networks. The invention also relates to mobile communication systems and in particular to mobile communications through heterogeneous access networks. In order to prove improved method for initiating services to mobile terminals and/or to reduce power consumption of mobile terminals, the invention introduces of a sleep state that can be entered by the terminal for an access system if same is not used. Upon requesting a service from/to the mobile terminal, the mobile terminal starts service initiation through a second access system and transits back to active state for the first access system for service provision.

Claims

1. A mobile terminal capable of communicating with a core network via a first or second access network, wherein radio access technology of the first access network is different from radio access technology of the second access network, the mobile terminal comprising:

a receiver which, in operation, receives a paging request, which is addressed to the mobile terminal to be routed through the first access network but is rerouted through the second access network when the mobile terminal is attached to the second access network;

a transmitter, which, in operation, transmits a message through the second access network in response to the paging request, the message requesting a service to be delivered through the first access network;

wherein the receiver, in operation, receives a handover command through the second access network, the handover command directing handover to the first access network; and

control circuitry, which, in operation, connects to the first access network based on the handover command.

2. The mobile terminal according to claim 1, wherein the control circuitry, in operation, informs an entity in the core network that the mobile terminal is configured to use the second access network for receiving data when the mobile terminal is attached to the second access network.

3. The mobile terminal according to claim 2, wherein the entity comprises a mobility management entity.

4. The mobile terminal according to claim 1, wherein the service comprises a voice service.

5. The mobile terminal according to claim 1, wherein the mobile terminal is in a deactivated state in the first access network when the mobile terminal is attached to the second access network.

6. The mobile terminal according to claim 1, wherein a distribution path for the service is switched to the first access network after the mobile terminal enters an active state in the first access network.

7. The mobile terminal according to claim 1, wherein the message transmitted in response to the paging request through the second access network requests initiation of the service.

8. The mobile terminal according to claim 1, wherein the handover command is for instructing the mobile terminal to be activated in the first access network.

9. The mobile terminal according to claim 8, wherein the activation in the first access network includes establishment of a bearer service through the first access network.

10. A method for a mobile terminal capable of communicating with a core network via a first or second access network, wherein radio access technology of the first access network is different from radio access technology of the second access network, the method comprising the steps of:

receiving by the mobile terminal a paging request, which is addressed to the mobile terminal to be routed through the first access network but is rerouted through the second access network when the mobile terminal is attached to the second access network;

transmitting, by the mobile terminal, a message through the second access network in response to the paging request, the message requesting a service to be delivered through the first access network;

receiving, by the mobile terminal, a handover command through the second access network, the handover command directing handover to the first access network; and

connecting by the mobile terminal to the first access network based on the handover command.

11. The method according to claim 10, further comprising the step of:

informing an entity in the core network that the mobile terminal is configured to use the second access network for receiving data when the mobile terminal is attached to the second access network.