US 7,406,325 B2Granted

Method of allocating links in a 1x evdo system

AssigneeUTStarcom Korea Limited

InventorKye Chol Cho

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Abstract

The present invention is directed to a method of allocating links in a base station of a 1×EVDO (EVolution Data Only) system. Conventionally, since a 1×EVDO system sequentially allocates a link to a user who requested a call setup irrespective of the link status, some of the allocated links may suffer from overload that eventually decreases the data transmission rate for the user. However, in order to perform the link allocation in due consideration of the link status, the present invention uses a link database including various status information, such as an equipment confirmation flag, a block flag, a current status, the total call user number, and the current call user number. With the status information, a base station control processor (BCP) in the 1×EVDO system of the present invention distributes traffic loads among the links and ensures an optimized data transmission rate.

Claims3

Dependent claims

A method of allocating links in a base station of a 1×EVDO system comprising a link database, wherein the link database includes an equipment confirmation item for representing equipment information of the link, a link status item for representing a status of the link, a total call user number item for representing the total number of users to whom the link is allocated, and a current call user number item for representing in each sub-cell the number of users to whom the link is allocated, said method comprising the steps of:

checking the equipment confirmation item upon request for a call allocation from a user;
checking the total call user number item to determine whether there remains a link that has not been used by any of other users;
if it is determined that there remains an unused link, checking the link status item to determine whether the link is in a normal status;
and
if it is determined that the link is in a normal status, allocating the link to the user.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/560,297Filed 26 Jul 2004
Priority: KR 10-2003-005146625 Jul 2003
Published: US 2007/0197244 A123 Aug 2007
Granted: 29 Jul 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 72/54
Allocation or scheduling criteria for wireless resources: based on quality criteria
H04B 7/264
Using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]: for data rate control
H04W 72/044
Wireless resource allocation: based on the type of the allocated resource
H04W
Wireless communication networks