POINT-TO-MULTIPOINT MOBILE RADIO TRANSMISSION

• US 20090201845A1
• Filed: 04/22/2009
• Published: 08/13/2009
• Est. Priority Date: 08/12/1997
• Status: Active Grant

• Current Assignee: Taiwan Semiconductor Manufacturing Company Limited
• Original Assignee: Arto Leppisaari, Jari Pekka Hamalainen
• Inventors: Leppisaari, Arto, Hamalainen, Jari Pekka
• Granted Patent: US 8,688,094 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 8/085 involving hierarchical organized mobility servers, e.g. hierarchical mobile IP [HMIP]
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A method of operating a mobile communication system-supporting data transmission between a mobile station (MS) and a network in a number of different packet data protocols (PDPs) including a point-to-multipoint-multicast (PTM-M) protocol PDP data is formatted and unformatted by a sub-network dependent convergence protocol (SNDCP) according to the PDP of data. The PDP is identified to the SNDCP by a protocol identifier transmitted between the network and the mobile station. In order to allow a MS to receive a PTM-M in an IDLE state, a unique protocol identifier is permanently assigned to PTM-M transmissions whilst other identifiers are dynamically assigned to other PDPs by the network.

Claims

1. Method comprising:

storing a permanently allocated protocol identifier in a mobile communication device;

identifying a matching protocol identifier in a transmission from a mobile communication network to the mobile communication device after powering on the device but before the device is tracked by the mobile communication network; and

in response to the identifying step, receiving and processing the transmission.

2. The method of claim 1, further comprising the step of:

establishing communication between the device and the network so that the network is capable of tracking the device.

3. The method of claim 2, further comprising the step of:

the device receiving and processing at least one other transmission from the mobile communication network that contains another protocol identifier, the another protocol identifier provided by the network to the device after the step of establishing communication and before the step of receiving and processing the at least one other transmission.

4. A method of operating a mobile communication device comprising the steps of:

receiving a transmission from a mobile communication network wherein the communication device is unknown to the network;

processing the transmission; and

after the processing step, establishing communication between the communication device and the network so that the communication device becomes known to the network and so that the network is capable of tracking the device.

5. A mobile communication device comprising:

a stored identification code for receiving and processing a transmission from a transmitter in a mobile communication network wherein the device is unknown to the network, the transmission containing a code matching the stored identification code.

6. A mobile communication device comprising:

at least two modes of operation including a first mode, wherein the device is tracked by a mobile communication network, and a second mode, wherein the device is not tracked by the mobile communication network; and

a stored identification code for receiving and processing a transmission from the mobile communication network when the device is operating in the second mode, the receiving and processing step performed only if the transmission contains an identification code matching the stored identification code.

7. A mobile communication device comprising:

a first mode of operation wherein the device is capable of being tracked by a mobile communication network;

a second mode of operation wherein the device is not known to the mobile communication network;

memory for storing a first type identification code dynamically allocated by the network and provided by the network to the device for identifying and processing a first type transmission from the network, the first type transmission specifically intended for the device when the device is in the first mode of operation; and

the memory also for storing a second type identification code permanently allocated by the network, the second type identification code for identifying and processing a second type transmission from the network when the device is in the second mode of operation.