Optimized resource allocation for wireless device in packet transfer mode
AssigneeResearch In Motion Limited
InventorsDinesh Kumar Arora, David Philip Hole
Life of this patent
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Abstract
A system and method allows a network, in response to a cell reselection notice, to serve a wireless, wireless device sufficient data to complete a pending data transfer instead of performing the immediate cell change. Appropriate allocation of radio resources to the wireless device in the current serving cell and before cell change allows reduced packet data transfer latencies for small data sessions, better load balancing and traffic resourcing between cells, appropriate allocation of uplink resources in the new target cell, and enhanced control over network congestion.
Claims25
A method for performing a cell change for a wireless device associated with a network including a first communications cell and a second communications cell, the method comprising:
- initiating a temporary block flow (TBF) to transfer data through the first communications cell;
- identifying an occurrence of a cell reselection criteria;
- determining a number of pending data blocks to be transmitted through the first communications cell to complete at least a selected portion of the TBF through the first communications cell;
- encoding the number of pending data blocks into a cell change notification;
- transmitting the cell change notification to the network to indicate a remaining amount of data needed to complete at least a selected portion of the TBF through the first communications cell;
- receiving a cell change message from the network;
- and
- switching to the second communications cell.
A method for performing a cell reselection with a wireless device associated with a network including a first communications cell and a second communications cell, the method comprising:
- receiving a temporary block flow (TBF) including a series of data blocks from the wireless device through the first communications cell;
- receiving measurement reports from the wireless device through the first communications cell, the measurement reports including an identification of a number of pending data blocks to be transmitted through the first communications cell;
- using the identification of the number of pending data blocks encoded in the measurement reports received from the wireless device to determine, determining a remaining number of data blocks needed to complete the TBF through the first communications cell;
- communicating a cell change order after receiving at least a selected portion of the TBF through the first communications cell;
- and
- connecting the wireless device to the second communications cell.
A method for performing a cell reselection with a wireless device associated with a network including a first communications cell and a second communications cell, the method comprising:
- initiating a temporary block flow (TBF) to transfer a series of data blocks through the first communications cell;
- identifying an occurrence of a cell reselection criteria;
- determining a number of pending data blocks to be transmitted through the first communications cell to complete at least a selected portion of the TBF through the first communications cell;
- encoding the number of pending data blocks into a cell change notification;
- transmitting the cell change notification to the network to indicate a remaining number of data blocks needed to complete at least a selected portion of the TBF through the first communications cell;
- receiving a handoff command from the network;
- and
- connecting to the second communications cell.
Dependencies are inferred from the claim text.