Indoor personal relay

Patent metadata

Field	Value
Publication number	US-9641237-B2
Application number	US-201514700916-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	Jan 11, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

The embodiments herein disclose an indoor personal relay which has a wireless interface with the BS, which is effective in both cost and technology terms. The indoor personal relay, as disclosed herein is an estimate and forward relay. The relay 101 as disclosed herein does not perform any additional channel decoding/encoding on the data that it receives from the UE or BS. Embodiments disclosed herein enable the relevant UEs to have a high SINR link with the relay. This, in turn, translates to a better effective link quality between the UE and BS and higher indoor rates, which otherwise may have been not as good as a consequence of poor direct link between the UE and the BS. This relay is effectively transparent to the UE. The deployment of relays also implies minimal impact on UE IOT.

First claim

What is claimed is:

1. A method to enable a relay to associate with a Base Station (BS) in a wireless communication network, said method comprising of:
powering on said relay;
said relay searching for a best BS;
said relay attaching to said best BS;
said relay sending a list of Closed Subscriber Group (CSG) user equipment (UEs) of said relay to said best BS;
said best BS checking with a neighboring BS when at least one of said CSG UEs are attached with said neighboring BS, when said best BS finds that none of said CSG UEs are attached to said best BS;
said best BS instructing said relay to hand over said relay to said neighboring BS, when said neighboring BS confirms a presence of at least one CSG UE attached to said neighboring BS and when association criteria are satisfied;
a UE in a coverage area of said relay measuring received signal strengths from a plurality of base stations (BSs);
said UE in said coverage area of said relay measuring received signal strengths from at least one relay when said at least one relay has been instructed by its serving BS to transmit a unique identifier of said relay, cell barring message, and system information; and
said UE in said coverage area of said relay checking for a cell barring message in the transmission of said unique identifier.

2. The method of claim 1 , wherein one of said best BS or said neighboring BS assigns said unique identifier to said relay upon said relay completing an association procedure with one of said best BS or said neighboring BS.

3. The method of claim 1 , wherein said relay registers capabilities of said relay with one of said best BS or said neighboring BS upon said relay completing an association procedure with said one of said best BS or said neighboring BS.

4. The method of claim 1 , wherein said relay is assigned with a network identifier upon said relay completing an association procedure with one of said best BS or said neighboring BS.

5. The method of claim 1 , wherein one of said best BS or said neighboring BS sends a control message to said relay instructing said relay to power down when said relay has not served any UEs for a specified period of time.

6. The method of claim 1 , wherein one of said best BS or said neighboring BS sends a control message to said relay instructing said relay to power down when said relay is causing excessive interference.

7. The method of claim 1 , wherein said relay powers down when said relay detects that a mobility level of said relay has crossed a predefined threshold.

8. The method of claim 1 , wherein said association criteria comprises at least one of:
a proximity of said CSG UE to said relay;
a signal strength of link between said CSG UE and said relay;
a quality of link between said relay and said neighboring BS;
a number of CSG UEs associated with said relay; and
when Quality of Service parameters of said CSG UE can be met while serving it through said relay.

9. A wireless communication network comprising of at least one User Equipment (UE), at least one relay, and at least one Base Station (BS), said wireless communication network enabling a relay to associate with a BS by configuring said wireless communication network to enable:
powering of said relay;
said relay searching for a best BS;
said relay attaching to said best BS;
said relay sending a list of Closed Subscriber Group (CSG) UEs of said relay to said best BS;
said best BS checking with a neighboring BS when at least one of said CSG UEs are attached with said neighboring BS, when said best BS finds that none of said CSG UEs are attached to said best BS;
said best BS instructing said relay to hand over said relay to said neighboring BS, when said neighboring BS confirms presence of at least one CSG UE attached to said neighboring BS and when association criteria are satisfied;
a UE in a coverage area of said relay measuring received signal strengths from a plurality of base stations (BSs);
said UE in said coverage area of said relay measuring received signal strengths from at least one relay when said at least one relay has been instructed by its serving BS to transmit a unique identifier of said relay, cell barring message, and system information; and
said UE in said coverage area of said relay checking for a cell barring message in the transmission of said unique identifier.

10. The wireless communication network of claim 9 , wherein said wireless communication network is configured to enable one of said best BS or said neighboring BS to assign a unique identifier to said relay upon said relay completing an association procedure with one of said best BS or said neighboring BS.

11. The wireless communication network of claim 9 , wherein said wireless communication network is configured to enable said relay to register capabilities of said relay with one of said best BS or said neighboring BS upon said relay completing an association procedure with one of said best BS or said neighboring BS.

12. The wireless communication network of claim 9 , wherein said wireless communication network is further configured to enable one of said best BS or said neighboring BS to assign a network identifier to said relay upon said relay completing an association procedure with one of said best BS or said neighboring BS.

13. The wireless communication network of claim 9 , wherein said wireless communication network is configured to enable one of said best BS or said neighboring BS to send a control message to said relay instructing said relay to power down when said relay has not served any UEs for a specified period of time.

14. The wireless communication network of claim 9 , wherein said wireless communication network is configured to enable one of said best BS or said neighboring BS to send a control message to said relay instructing said relay to power down when said relay is causing excessive interference.

15. The wireless communication network of claim 9 , wherein said wireless communication network is configured to enable said relay to power down when said relay detects that a mobility level of said relay has crossed a predefined threshold.

16. The wireless communication network of claim 9 , wherein said association criteria comprising at least one of:
a proximity of said CSG UE to said relay;
a signal strength of link between said CSG UE and said relay;
a quality of link between said relay and said neighboring BS;
a number of CSG UEs associated with said relay; and
when Quality of Service parameters of said CSG UE can be met while serving it through said relay.

17. In a wireless communication network comprising a relay, said relay configured to:
power on said relay;
search for a best BS;
attach to said best BS;
send a list of Closed Subscriber Group (CSG) user equipment of said relay to said best BS; and
hand over to a neighboring BS upon receiving an indication from said best BS, wherein said best BS sending said indication upon said neighboring BS confirming a presence of at least one CSG UE attached to said neighboring BS and when association criteria are satisfied,
wherein a UE in a coverage area of said relay is configured to measure received signal strengths from a plurality of base stations (BSs); measure received signal strengths from at least one relay when said at least one relay has been instructed by its serving BS to transmit a unique identifier of said relay, cell barring message, and system information; and check a cell barring message in the transmission of said unique identifier.

18. The relay of claim 17 , wherein said relay is conf

Assignees

• Akhtar Nadeem
• Krishnan Rajet
• Kalyani Sheetal
• Kaimalettu Sunil
• Ramamurthi Bhaskar
• Centre Of Excellence In Wireless Tech

Inventors

• Akhtar Nadeem
• Krishnan Rajet
• Kalyani Sheetal
• Kaimalettu Sunil
• Ramamurthi Bhaskar

Classifications

• H04W84/047

  using dedicated repeater stations · CPC title

• H04B7/15528 Primary

  Control of operation parameters of a relay station to exploit the physical medium · CPC title

• H04W36/08

  Reselecting an access point · CPC title

• H04W48/20

  Selecting an access point · CPC title

• H04W36/0005

  Control or signalling for completing the hand-off · CPC title