Abstract
Method and device to implement the method for the passage between radio access networks applied with the use of different access technologies by means of radio. A method and a device to implement the method for the passage (hand-off) between radio access networks (sans-radio access network) which are applied in different access technologies by means of radio (rats) will be described. A unit for transmitting and receiving without wire (WRTU) is equipped with at least two radio units so that it can support the rats. Each RAN sends a list of sans which have co-location within the coverage area of the RAN to the WTRU. The WTRU then stores the list and defines if the criterion for the process to the passage (hand-off) has been reached by the target ran. The WTRU then starts the process for the passage of a RAN currently in use having as a target the target RAN for the case in which the criterion to check the process for the passage will be met by the target RAN. In an alternative way the WTRU can make the sending a measurement report to the RAN in use at that particular moment in which the RAN in use defines whether the criterion for the process for the passage is satisfied in accordance with a criterion that has been selected among the sans co-located and then starts the process for passage to the RAN which was selected if no criterion for the process for the passage has been met.
A method and apparatus for implementing a handoff between radio access networks (RANs) deployed under different radio access technologies (RATs) are disclosed. A wireless transmit/receive unit (WTRU) is equipped with at least two radio units to support the RATs. Each RAN sends a list of co-located RANs in the coverage area of the RAN to the WTRU. The WTRU stores the list and determines whether handoff criteria is met by one of the co-located RANs. The WTRU then initiates a handoff from a current RAN to a target RAN if the handoff criteria is met by the target RAN. Alternatively the WTRU may send a measurement report to the current RAN whereby the current RAN determines whether handoff criteria is met by a selected one of the co-located RANs and initiate a handoff to the selected RAN if the handoff criteria is met.
A method and apparatus for implementing a handoff between radio access networks (RANs) deployed under different radio access technologies (RATs) are disclosed. A wireless transmit/receive unit (WTRU) is equipped with at least two radio units to support the RATs. Each RAN sends a list of co-located RANs in the coverage area of the RAN to the WTRU. The WTRU stores the list and determines whether handoff criteria is met by one of the co-located RANs. The WTRU then initiates a handoff from a current RAN to a target RAN if the handoff criteria is met by the target RAN. Alternatively the WTRU may send a measurement report to the current RAN whereby the current RAN determines whether handoff criteria is met by a selected one of the co-located RANs and initiate a handoff to the selected RAN if the handoff criteria is met.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| Not Available | 20/03/2007 | ISLD-200802-001 | INTERDIGITAL INC | No | Family Member | ||||
| 4G,3G | 18/09/2008 | ISLD-200901-001 | INTERDIGITAL INC | Yes | Family Member | ||||
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