Optimized mechanism for paging transmission and reception

• US 10,212,691 B2
• Filed: 11/28/2017
• Issued: 02/19/2019
• Est. Priority Date: 05/09/2014
• Status: Active Grant

• Current Assignee: HFI Innovation, Inc. (MediaTek, Inc.)
• Original Assignee: HFI Innovation, Inc. (MediaTek, Inc.)
• Inventors: Zhang, Yuanyuan, Jheng, Yu-Syuan, Sun, Feifei, Chen, Li, Fu, I-Kang
• Primary Examiner(s): Sarwar, Babar
• Application Number:
  US15/823,958
• Publication Number:
  US 20180084526A1
• Time in Patent Office: 448 Days
• Field of Search: 455515-517, 455458, 4554261, 4554121-4142, 455418-4221, 4554321, 455434, 455437, 455439, 455442, 455444, 455450, 4555521, 4554521, 455453, 4554561, 4554563, 455457, 370328-332, 370338, 370311, 370312, 370322, 370343, 370341
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

Methods and apparatus are provided for paging transmission and reception for UEs requiring coverage extension/coverage enhancement. In one novel aspect, the UE reports the CE status to the MME. CE level related information and the corresponding cell ID are provided from eNB to MME. MME sends paging information including the repetition number to all eNBs in the corresponding tracking area when paging the UE. In another novel aspect, a paging area is used for CE UEs. The UE receives paging area information, notifies the network, and updates the stored paging area information upon detecting changes between the received and the stored paging areas. In another embodiment, the UE reports its CE status upon detecting CE status changes. The eNB stores UE CE information and forwards it to neighboring eNBs in the same paging area. The eNB pages UEs on its CE UE list with repetition while paging other UEs normally.

Claims

1. A method comprising:

determining a coverage extension/coverage enhancement (CE) status for a UE by a network entity in a wireless network, wherein the CE status indicates either a Normal mode or a CE mode of the UE, and wherein the CE mode identifies the UE as being in a status of requiring enhanced coverage handling; and

transmitting a paging request repeatedly for the UE to one or more base stations in a tracking area of the UE, wherein the paging request indicates the CE mode for the UE, and wherein the paging request is transmitted repeatedly by a repetition number greater than one.

2. The method of claim 1 wherein the network entity is a mobility management entity (MME).

3. The method of claim 1 further comprising:

providing the one or more base stations in the track area with a repetition number for the paging of the UE.

4. The method of claim 1 further comprising:

receiving CE information of the UE from a base station.

5. The method of claim 1, wherein the CE information includes a CE status of the UE and a corresponding cell ID for the UE.

6. An apparatus, comprising:

an identifier that determines a coverage extension/coverage enhancement (CE) status for a UE in a wireless network, wherein the CE status indicates either a Normal mode or a CE mode of the UE, and wherein the CE mode identifies the UE as being in a status of requiring enhanced coverage handling; and

a CE sender that sends a paging request repeatedly for the UE to one or more base stations in a tracking area of the UE, wherein the paging request indicates the CE mode for the UE, and wherein the paging request is transmitted repeatedly by a repetition number greater than one.

7. The apparatus of claim 6 wherein the apparatus is a mobility management entity (MME).

8. The apparatus of claim 6 further comprising:

a CE number manager that provides the one or more base stations in the track area with a repetition number for the paging of the UE.

9. The apparatus of claim 6 further comprising:

a CE receiver that receives CE information of the UE from a base station.

10. The apparatus of claim 6, wherein the CE information includes a CE status of the UE and a corresponding cell ID for the UE.

11. An apparatus comprising:

a detector that detects a coverage extension/coverage enhancement (CE) status in a wireless network, wherein the CE status indicates either a Normal mode or a CE mode of the UE, and wherein the CE mode identifies the apparatus as being in a status of requiring enhanced coverage handling;

a CE sender that sends a CE message indicating the CE mode to an eNB; and

a CE receiver that receives a paging message from the eNB, wherein the paging message is transmitted repeatedly by a repetition number greater than one.

12. The apparatus of claim 11, wherein the CE mode is detected upon detecting one or more conditions comprising:

the UE is a low cost device, or the UE requires CE.

13. The apparatus of claim 11, wherein the sending the CE message comprising:

establishing a radio resource control (RRC) connection with a base station; and

reporting a CE status of the UE to the base station.

14. The apparatus of claim 11, wherein the CE message to the eNB includes a CE status of the UE.

15. The apparatus of claim 11, wherein the CE message to the eNB includes a update of a CE status of the UE.

16. The apparatus of claim 11, wherein the repetition number is determined by mobility management entity (MME).