Contemporaneous connectivity to multiple piconets

• US 6,026,297 A
• Filed: 09/17/1997
• Issued: 02/15/2000
• Est. Priority Date: 09/17/1997
• Status: Expired due to Term

• Current Assignee: Fingerprint Cards AB
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Haartsen, Jacobus Cornelis
• Primary Examiner(s): Urban, Edward F.
• Assistant Examiner(s): Nguyen, Thuan T.
• Application Number:
  US08/932,244
• Time in Patent Office: 881 Days
• Field of Search: 455/426, 455/445, 455/553, 455/414, 455/416, 455/458, 455/552
• US Class Current: 455/426.1
• CPC Class Codes: H04M 3/58 Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party substation line holding circuits H04M1/80
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 92/02 Inter-networking arrangements
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A first wireless unit engages in contemporaneous participation in a plurality of wireless networks. A connection is established with a second wireless unit in a first wireless network. Then, a hold time-out period is determined, and the first wireless unit enters a hold mode with respect to the first wireless network. While in hold mode, the first wireless unit establishes a connection with a third wireless unit in a second wireless network. This may include the first wireless unit paging the third wireless unit and acting as a master unit in the second wireless network. Alternatively, the first wireless unit may periodically listen for paging messages from a master unit, and respond when paged, thereby becoming a slave in the second wireless network. The first wireless unit then participates in activities in the second wireless network. Upon expiration of the hold time-out period, the first wireless unit resumes active participation in the first wireless network. This may include determining a second hold time-out period to be used in connection with the second wireless network, and entering a hold mode with respect to the second wireless network.

Claims

1. A method of operating a first wireless unit to contemporaneously participate in a plurality of wireless networks, the method comprising the steps of:

establishing a connection with a second wireless unit in a first wireless network;

determining a hold time-out period;

entering a hold mode with respect to the first wireless network;

establishing a connection with a third wireless unit in a second wireless network;

participating in activities in the second wireless network; and

upon expiration of the hold time-out period, resuming active participation in the first wireless network.

2. The method of claim 1, wherein the step of resuming active participation in the first wireless network includes the steps of:

determining a second hold time-out period to be used in connection with the second wireless network; and

entering a hold mode with respect to the second wireless network.

3. The method of claim 1, wherein the step of establishing the connection with the third wireless unit in the second wireless network includes the steps of:

transmitting a paging message that includes an address of the third wireless unit;

receiving a response from the third wireless unit; and

establishing the connection with the third wireless unit, whereby the first wireless unit is a master in the second wireless network.

4. The method of claim 1, wherein the step of establishing the connection with the third wireless unit in the second wireless network includes the steps of:

entering a standby mode for a predetermined period of time;

periodically determining whether a paging message has been received that designates the first wireless unit as recipient; and

if the paging message has been received that designates the first wireless unit as recipient, then sending a response to the sender of the paging message and establishing a connection with the sender of the paging message, whereby the first wireless unit is a slave in the second wireless network.

5. The method of claim 1, wherein:

the first wireless unit is a slave in the first wireless network; and

the step of determining a hold time-out period includes mutually agreeing upon the hold time-out period with the second wireless unit.

6. The method of claim 1, wherein:

the first wireless unit is a master in the first wireless network; and

the step of determining a hold time-out period includes mutually agreeing upon a hold time-out period with every slave wireless unit in the first wireless network.

7. A first wireless unit for contemporaneously participating in a plurality of wireless networks, the first wireless unit comprising:

means for establishing a connection with a second wireless unit in a first wireless network;

means for determining a hold time-out period;

means for entering a hold mode with respect to the first wireless network;

means for establishing a connection with a third wireless unit in a second wireless network;

means for participating in activities in the second wireless network; and

means for resuming active participation in the first wireless network upon expiration of the hold time-out period.

8. The first wireless unit of claim 7, wherein the means for resuming active participation in the first wireless network includes:

means for determining a second hold time-out period to be used in connection with the second wireless network; and

means for entering a hold mode with respect to the second wireless network.

9. The first wireless unit of claim 7, wherein the means for establishing the connection with the third wireless unit in the second wireless network includes:

means for transmitting a paging message that includes an address of the third wireless unit;

means for receiving a response from the third wireless unit; and

means for establishing the connection with the third wireless unit, whereby the first wireless unit is a master in the second wireless network.

10. The first wireless unit of claim 7, wherein the means for establishing the connection with the third wireless unit in the second wireless network includes:

means for entering a standby mode for a predetermined period of time;

means for periodically determining whether a paging message has been received that designates the first wireless unit as recipient; and

means for sending a response to the sender of the paging message and establishing a connection with the sender of the paging message if the paging message has been received that designates the first wireless unit as recipient, whereby the first wireless unit is a slave in the second wireless network.

11. The first wireless unit of claim 7, wherein:

the first wireless unit is a slave in the first wireless network; and

the means for determining a hold time-out period includes means for mutually agreeing upon the hold time-out period with the second wireless unit.

12. The first wireless unit of claim 7, wherein:

the first wireless unit is a master in the first wireless network; and

the means for determining a hold time-out period includes means for mutually agreeing upon a hold time-out period with every slave wireless unit in the first wireless network.