WIRELESS TELECOMMUNICATONS NETWORK

• US 20100027694A1
• Filed: 11/19/2008
• Published: 02/04/2010
• Est. Priority Date: 07/31/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: DesignArt Networks Limited (Qualcomm, Inc.)
• Inventors: TOUBOUL, ASAF, BARAK, OZ
• Granted Patent: US 9,048,981 B2
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04J 11/0093 Neighbour cell search
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation

Abstract

A femtocell including a transceiver and a processor coupled to the transceiver for implementing transmission and reception in a wireless communication network utilizing OFDM/OFDMA, and the processor including modules for collecting information about neighboring base stations and femtocells and utilizing the collected information to select the femtocell'"'"'s own radio parameters, and a method for radio resource allocation in a wireless communication network implementing OFDM/OFDMA, the method including performing preamble synchronization by a sniffing femtocell on a neighboring femtocell, and determining radio resource parameters of the neighboring femtocell based on the synchronized preamble.

Claims

1. A femtocell having a transceiver and a processor coupled to said transceiver, the femtocell comprising:

means for synchronization of the femtocell on a preamble transmitted by a neighboring femtocell; and

means for determination of channel and radio parameters of said neighboring femtocell based on said preamble.

2. The femtocell according to claim 1, further comprising means for allocating channel and radio parameters to the femtocell based on said determined parameters.

3. A femtocell comprising:

a transceiver; and

a baseband processor coupled to said transceiver for implementing transmission and reception in a wireless communication network utilizing OFDM/OFDMA; and

said processor including means for collecting information about neighboring femtocells and computing a selected channel and radio parameters from said collected information;

wherein said means for collecting comprises;

a module for preamble detection and synchronization with a neighboring base station in said network, coupled to said baseband processor;

an RSSI (Radio Signal Strength Indicator) and CINR (Carrier to Interference-plus-Noise Ratio) detection module in said baseband processor;

wherein said processor is adapted to implement channel and radio parameter selection based on information received from said modules.

4. The femtocell according to claim 3, wherein said wireless communication network is WiMAX or LTE.

5. A method for radio resource allocation of a femtocell in a wireless communication network implementing OFDM/OFDMA, the method comprising:

performing preamble synchronization by a sniffing femtocell on a neighboring femtocell; and

determining radio resource parameters of said neighboring femtocell based on said synchronized preamble.

6. The method according to claim 5, further comprising calculating and selecting radio resource parameters of said sniffing femtocell based on said determined parameters.

7. The method according to claim 6, wherein the step of selecting includes:

detecting a preamble from a neighboring femtocell in said network for synchronization;

determining a received signal strength indication (RSSI) and CINR from said preamble; and

implementing radio resource allocation in accordance with said information.

8. The method according to claim 6, wherein said step of calculating and selecting includes:

updating a neighboring femtocell parameter database;

performing network entry;

requesting radio configuration parameters; and

receiving and implementing radio configured parameters.

9. The method according to claim 6, wherein said step of calculating and selecting includes:

Updating a neighboring femtocell parameter database;

Performing network entry;

Requesting neighboring femtocell list; and

Selecting configured parameters.

10. The method according to claim 5, further comprising selecting parameters including at least one of segment, frequency and transmission power.