Protocol for self-adaptive intercommunication between fixed radio stations of a cellular telephony network

• US 6,122,262 A
• Filed: 09/17/1997
• Issued: 09/19/2000
• Est. Priority Date: 09/18/1996
• Status: Expired due to Fees

• Current Assignee: Orange S.A.
• Original Assignee: Orange S.A.
• Inventors: Desseignes, Christophe, Blondeau, Olivier, Despres, Fran.cedilla.ois
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): Tsegaye, Saba
• Application Number:
  US08/932,582
• Time in Patent Office: 1,098 Days
• Field of Search: 370/328, 370/329, 370/331, 370/349, 370/395, 370/396, 370/397, 370/409, 370/403, 370/404, 370/465, 370/466, 370/467, 455/436, 455/450
• US Class Current: 370/328
• CPC Class Codes: H04L 2012/5607 Radio
• CPC Class Codes: H04L 2012/5612 Ring
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 2012/5631 Resource management and allocation
• CPC Class Codes: H04L 2012/5652 Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 92/16 Interfaces between hierarchically similar devices
• CPC Class Codes: H04W 92/20 between access points

Abstract

A protocol for interconnection between fixed radio stations of a cellular telephony network for the transmission of management messages to manage the cellular radiotelephony network in asynchronous mode transmission or DQDB, in which geographical coordinates are assigned to each fixed radio station of the network, and a virtual-ring interconnection for any set of two neighboring stations is formed. The management messages between neighboring stations, identified on the basis of their geographical coordinates, on the virtual ring, using a self-adaptive intercommunication process are transmitted.

Claims

1. A protocol for intercommunications between fixed radio stations of a cellular telephony network for the transmission of network-management messages between said fixed radio stations, said protocol comprising:

a) assigning geographical coordinates to each fixed radio station belonging to said cellular telephony network;

b) forming a virtual-ring interconnection for any set of two successive fixed radio stations constituting neighbouring stations, said neighbouring stations being identified on the basis of said geographical coordinates on said virtual ring; and

c) transmitting said management messages between neighbouring stations, in a self-adaptive manner such that updates regarding the network are automatically recognized and communications are managed based on said updates.

2. The protocol of claim 1, wherein said virtual-ring interconnection comprises establishing, at each fixed radio station, a set of circuit identifiers (VCI) for the neighbouring stations.

3. The protocol of claim 2, wherein, for fixed radio stations having a proximity zone of determined size in transmission/reception of value P, each circuit identifier for the neighbouring stations is formed by two values which are a function of said geographical coordinates and of said determined size chosen for the proximity zone of the fixed radio stations.

4. The protocol according to claim 1, wherein said geographical coordinates assigned to each fixed radio station are established in a two-dimensional or three-dimensional reference frame established on the basis of a grid-type network of repeat distance Δ

x, Δ

y, Δ

z, each coordinate satisfying the equation

space="preserve" listing-type="equation">k.sub.x =E(x/Δ

x)

space="preserve" listing-type="equation">k.sub.y =E(y/Δ

y)

space="preserve" listing-type="equation">k.sub.z =E(z/Δ

z)

in which equation

Δ

x, Δ

y, Δ

z represents the value of the repeat distance of the grid-type network in the corresponding direction x, y or z;

k_x, k_y, k_z represents a real coefficient representing the distance in the corresponding direction x, y, z of the fixed radio station from the origin and;

E denotes the integer part of the ratio x/Δ

x, y/Δ

y, or z/Δ

z.

5. The protocol of claim 1 wherein, in a case of hand-over management when a mobile radio transmitter/receiver passes through the overlap zone of two neighbouring fixed radio stations formed by a current and a future fixed radio station, said management messages comprise:

an automatic transfer request message transmitted from said future fixed radio station to said current fixed radio station, said automatic transfer request message comprising at least;

a header field for identifying the type of message,

an address field for said current fixed radio station,

a hand-over transfer request field, and in response to this automatic transfer request message;

a hand-over transfer response message transmitted from said current fixed radio station to said future fixed radio station, said hand-over transfer response message comprising at least;

a header field for identifying the type of message,

an address field for said future fixed radio station,

an information field relating to the call context.

6. The protocol of claim 1, wherein, in a case of managing incoming calls on the cellular telephony network which are generated by a subscriber telephone set of a switched telephone network to a mobile radio transmitter/receiver, said management messages include at least:

an incoming call message transmitted from the connection unit to the neighbouring stations, said incoming call message including at least;

a header field for identifying the message,

an identification field for the destination neighbouring station,

a call number field for the mobile radio transmitter/receiver, and on response to said incoming call message by one of the neighbouring stations,

a response code message intended for the connection unit, said response code message including at least;

a header field for identifying the type of message,

an identification field for the connection unit, allowing to ensure that the incoming call from the subscriber telephone set is joined with the mobile radio transmitter/receiver.

7. The protocol according to claim 1, wherein, in the case of automatic dynamic resource management, said management messages transmitted from a fixed radio station to a neighbouring fixed radio station include at least:

a header field for identifying the type of message,

an identification field for the neighbouring station which is the destination of this message,

a resource reference field indicating the frequency and/or the time interval for transmission used by said fixed radio station.

8. The protocol of claim 1, wherein the determination of any neighbouring fixed radio station is carried out on the basis of a list of the geographical coordinates of the possible neighbouring fixed radio stations.

9. A protocol for intercommunications between fixed radio stations of a cellular telephony network for the transmission of network-management messages between said fixed radio stations, said protocol comprising:

a) assigning geographical coordinates to each fixed radio station belonging to said cellular telephony network, wherein said geographical coordinates are established in a two-dimensional or three-dimensional grid-type network of repeat distance Δ

x, Δ

y, Δ

z, each coordinate satisfying the equation

space="preserve" listing-type="equation">k.sub.x =E(x/Δ

x)

space="preserve" listing-type="equation">k.sub.y =E(y/Δ

y)

space="preserve" listing-type="equation">k.sub.z =E(z/Δ

z)

in which equation

Δ

x, Δ

y, Δ

z represents the value of the repeat distance of the grid-type network in the corresponding direction x, y, or z;

k_x, k_y, k_z, represents a real coefficient representing the distance in the corresponding direction x, y, z of the fixed radio station from the origin;

and E denotes the integer part of the ratio x/Δ

x, y/Δ

y, z/Δ

z;

b) forming a virtual-ring interconnection for any set of two successive fixed radio stations constituting neighbouring stations, said neighbouring stations being identified on the basis of said geographical coordinates on said virtual ring; and

c) transmitting said management messages between neighbouring stations, thereby enabling transmission of said messages by self-adaptive intercommunication between the fixed radio stations of said network.