US 6,556,827 B1 · Method of managing a plurality of radio links in wireless local loop

Abstract

A method of managing a plurality of radio links in a WLL (Wireless Local Loop) is provided. The state of each radio link are defined as L2_NewLid indicating establishment of the radio link is requested but not completed, LNK indicating that a new connection is established to the radio link, and L3_AddReq indicating establishment of the radio link is pending. A data link layer of a base station manages each radio link between a terminal and the base station referring to the state of the radio link. Upon request for establishing a radio link, the data link layer sets the LNK of the radio link to 1. Upon request for releasing the radio link, the data link layer sets the LNK of the radio link to 0. Upon request for adding a radio link, the data link layer adds the radio link by checking the L2_NewLid and the LNK of the radio link. Upon request for adding a radio link in an exception recovery state, the data link layer sets the L3_AddReq of the data link to 1, waits to transit to a multi-frame established state, and adds the radio link in the multi-frame established state.

Claims15

Dependent claims

A method of managing a plurality of radio links between a base station and a terminal by a data link layer of the base station according to a command generated from a base station controller (BSC) in a wireless local loop (WLL) system, wherein the state of each radio link is defined as L2_NewLid for indicating an establishment of the radio link is requested but not completed, LNK for indicating that a new connection is established to the radio link, and L3_AddReq for indicating that an establishment of the radio link is pending, the method comprising the steps of:

(1) receiving at the base station a radio link establish request message from the BSC;
(2) setting the LNK to 1 for a new connection of a radio link to be established;
(3) transmitting from the base station a request for establishing the radio link to the terminal;
(4) receiving an acknowledgment from the terminal that the request transmitted in step (3) has been received;
(5) notifying the BSC that the radio link with the terminal is established upon receiving the acknowledgment by the base station;
and,
(6) initiating a service between the terminal and the base station on the established radio link in step (5).

4 more elements

A method of managing a plurality of radio links between a base station and a terminal by a data link layer of the base station according to a command generated from a base station controller (BSC) in a wireless local loop (WLL) system, the state of each radio link of the plurality of radio links being defined respectively as L2_NewLid for indicating an establishment of the radio link is requested but not completed, LNK for indicating that a new connection is established to the radio link, and L3_AddReq for indicating an establishment of the radio link is pending, said method comprising the steps of:

(1) receiving an add request message for a new radio link on a radio link;
(2) checking the L2_NewLid and the LNK of the new radio link to be added if the data link layer is in a multi-frame established state;
(3) adding the new radio link if the L2_NewLid and the LNK are 1s;
(4) determining that frame errors have occurred and performing an add failure operation if the L2_NewLid is 1 and the LNK is 0;
(5) performing an add failure operation if the L2_NewLid is 0 and the LNK is 1;
(6) setting both the L2_NewLid and the LNK of the new radio link to 1s if both the L2_NewLid and the LNK are 0s;
and,
(7) adding the new radio link.

5 more elements

A method of managing a plurality of radio links between a base station and a terminal by a data link layer of the base station according to a command generated from a base station controller (BSC) in a wireless local loop (WLL) system, the state of each radio link being defined as L2_NewLid indicating an establishment of the radio link is requested but not completed, LNK indicating that a new connection is established to the radio link, and L3_AddReq indicating establishment of the radio link is pending, the method comprising the steps of:

(1) receiving an add request message for a new radio link;
(2) checking the L2_NewLid and the LNK of the new radio link to be added if the data link layer is in an exception recovery state;
(3) setting the L3_AddReq of the new radio link to 1 if the L2_NewLid and the LNK are 1s;
(4) determining that frame errors have occurred and performing an add failure operation if the L2_NewLid is 1 and the LNK is 0;
(5) performing an add failure operation if the L2_NewLid is 0 and the LNK is 1;
(6) setting the L2_NewLid, the LNK, and the L3_AddReq of the new radio link to 1s if both the L2_NewLid and the LNK are 0s;
(7) waiting to transmit to a multi-frame established state after the L3_AddReq is set to 1;
(8) searching for a radio link with the L3_AddReq=1 after the data link layer transmits to the multi-frame established state;
(9) setting the L3_AddReq of the searched radio link to 0;
and,
(10) adding the searched radio link.

8 more elements

Dependencies are inferred from the claim text.

Method of managing a plurality of radio links in wireless local loop

Life of this patent

Method of managing a plurality of radio links in wireless local loop

Life of this patent

Abstract

Claims15