Abstract
A method and apparatus for cell update while in a Cell_FACH state are disclosed. After selecting a target cell system information is read from the target cell including high speed downlink shared channel (HS-DSCH) common system information. A radio network temporary identity (RNTI) received in a source cell is cleared and a variable HS_DSCH_RECEPTION is set to TRUE. An HS-DSCH medium access control (MAC-hs) entity is configured based on the HS-DSCH common system information. High speed downlink packet access (HSDPA) transmission is then received in the target cell. A CELL UPDATE message is sent to notify of a cell change. The HSDPA transmission may be received using a common H-RNTI broadcast in the system information a reserved H-RNTI as requested in a CELL UPDATE message or a temporary identity which is a subset of a U-RNTI. The MAC-hs entity may be reset.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 18/09/2008 | ISLD-200901-001 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| 3G | 21/12/2016 | ISLD-201706-014 | INTERDIGITAL INC | No | Family Member | ||||
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| 3G | 30/10/2019 | ISLD-201909-015 | INTERDIGITAL INC |
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No | Family Member | |||
Specification Information
Specification Information
Technologies
Family Information
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|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
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Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A method for performing cell reselection while in a Cell_FACH state when a target cell supports Enhanced Cell_FACH, the method comprising:
selecting the target cell that supports Enhanced Cell_FACH;
reading system information broadcast from the target cell, the system information including high speed downlink shared channel (HS-DSCH) common system information;
clearing a HS-DSCH radio network temporary identity (H-RNTI) received in a source cell;
clearing a cell RNTI (C-RNTI) received in a source cell;
resetting an HS-DSCH medium access control (MAC-ehs) entity configured in the source cell;
configuring a MAC-ehs entity based on the HS-DSCH common system information; and
receiving high speed downlink packet access (HSDPA) transmission in the target cell.', 'selecting the target cell that supports Enhanced Cell_FACH;', 'reading system information broadcast from the target cell, the system information including high speed downlink shared channel (HS-DSCH) common system information;', 'clearing a HS-DSCH radio network temporary identity (H-RNTI) received in a source cell;', 'clearing a cell RNTI (C-RNTI) received in a source cell;', 'resetting an HS-DSCH medium access control (MAC-ehs) entity configured in the source cell;', 'configuring a MAC-ehs entity based on the HS-DSCH common system information; and', 'receiving high speed downlink packet access (HSDPA) transmission in the target cell.
2. The method of claim 1 wherein an index to one of a plurality of reserved HS-DSCH radio network temporary identities (RH-RNTIs) is included in a CELL UPDATE message.
3. The method of claim 2 wherein the HSDPA transmission is received using an RH-RNTI as requested in a CELL UPDATE message.
4. The method of claim 1 wherein the HSDPA transmission is received using a temporary identity which is a subset of a universal terrestrial radio access network (UTRAN) radio network temporary (U-RNTI).
5. The method of claim 1 further comprising enabling HS-DSCH reception by setting an HS-DSCH reception variable to TRUE.
6. The method of claim 1 wherein the MAC-ehs entity is reset for both a common H-RNTI and a dedicated H-RNTI, if the common H-RNTI and the dedicated H-RNTI are configured with separate MAC-ehs entities.
7. The method of claim 1 wherein the MAC-ehs entity is reset only when cell reselection results in an inter-Node B cell change.
8. The method of claim 1 wherein the MAC-ehs entity is reset only when cell reselection results in an intra-node B cell change for a Node B that does not support MAC-ehs preservation.
9. The method of claim 1 wherein the MAC-ehs entity is reset only if reordering queues are used
10. The method of claim 1 wherein the MAC-ehs entity is reset only if reordering queues are used and cell reselection results in an inter-Node B cell change or an intra-node B cell change for a Node B that does not support MAC-ehs preservation
11. The method of claim 1 wherein the MAC-ehs entity is reset in accordance with an indication from a network
12. The method of claim 1 further comprising flushing hybrid automatic repeat request (HARD) soft buffers
13. The method of claim 1 further comprising sending a radio link control (RLC) status report upon cell reselection
14. The method of claim 13 wherein the RLC status report is sent prior to sending a CELL UPDATE message and after selecting the target cell
15. The method of claim 13 wherein the RLC status report is included in a CELL UPDATE message
16. The method of claim 13 wherein the RLC status report is sent after receiving the CELL UPDATE CONFIRM message
17. The method of claim 1 wherein the system information includes an indication of enhanced Cell_FACH capability
18. The method of claim 1 wherein the HS-DSCH common system information includes at least one of a high speed shared control channel (HS-SCCH) scrambling code and channelization code, channel quality indicator (CQI) feedback information, the number of hybrid automatic repeat request (HARM) processes, memory partitioning, and a set of reserved HS-DSCH RNTIs (H-RNTIs)
19. A method for performing cell reselection while in a Cell_FACH state when only a source cell supports Enhanced Cell_FACH, the method comprising:
selecting a target cell;
reading system information broadcast from the target cell;
clearing a radio network temporary identity (RNTI) received in a source cell;
resetting an HS-DSCH medium access control (MAC-ehs) entity configured in the source cell;
preventing HS-DSCH reception by setting an HS-DSCH reception variable to FALSE;
setting up secondary common control physical channel (S-CCPCH) and random access channel (RACH) communication;
receiving downlink transmission on an S-CCPCH.', 'selecting a target cell;', 'reading system information broadcast from the target cell;', 'clearing a radio network temporary identity (RNTI) received in a source cell;', 'resetting an HS-DSCH medium access control (MAC-ehs) entity configured in the source cell;', 'preventing HS-DSCH reception by setting an HS-DSCH reception variable to FALSE;', 'setting up secondary common control physical channel (S-CCPCH) and random access channel (RACH) communication;', 'receiving downlink transmission on an S-CCPCH.
20. The method of claim 19 further comprising sending a radio link control (RLC) status report upon cell reselection.
21. The method of claim 20 wherein the RLC status report is sent prior to sending a CELL UPDATE message and after selecting the target cell.
22. The method of claim 20 wherein the RLC status report is included in a CELL UPDATE message.
23. The method of claim 20 wherein the RLC status report is sent after receiving a CELL UPDATE CONFIRM message.
24. A wireless transmit/receive unit (WTRU) for performing cell reselection while in a Cell_FACH state, the WTRU comprising:
a transceiver;
a high speed downlink shared channel (HS-DSCH) medium access control (MAC-ehs) entity for high speed downlink packet access (HSDPA) communication; and
a controller configured to, while in a Cell_FACH state, select a target cell that supports enhanced Cell_FACH, read system information broadcast from the target cell, clear a HS-DSCH radio network temporary identity (RNTI) received in a source cell, clear a cell RNTI (C-RNTI) received in a source cell, reset the MAC-ehs entity configured in the source cell, and configure HSDPA communication based on HS-DSCH common system information included in the system information.', 'a transceiver;', 'a high speed downlink shared channel (HS-DSCH) medium access control (MAC-ehs) entity for high speed downlink packet access (HSDPA) communication; and', 'a controller configured to, while in a Cell_FACH state, select a target cell that supports enhanced Cell_FACH, read system information broadcast from the target cell, clear a HS-DSCH radio network temporary identity (RNTI) received in a source cell, clear a cell RNTI (C-RNTI) received in a source cell, reset the MAC-ehs entity configured in the source cell, and configure HSDPA communication based on HS-DSCH common system information included in the system information.
25. The WTRU of claim 24 wherein an index to one of a plurality of reserved HS-DSCH radio network temporary identities (RH-RNTIs) is included in a CELL UPDATE message.
26. The WTRU of claim 24 wherein the HSDPA communication is received using an RH-RNTI as requested in a CELL UPDATE message.
27. The WTRU of claim 24 wherein the HSDPA communication is received using a temporary identity which is a subset of a universal terrestrial radio access network (UTRAN) radio network temporary (U-RNTI).
28. The WTRU of claim 24 wherein the controller enables HS-DSCH reception by setting an HS-DSCH reception variable to TRUE.
29. The WTRU of claim 24 wherein the MAC-ehs entity is reset for both a common H-RNTI and a dedicated H-RNTI if the common H-RNTI and the dedicated H-RNTI are configured with separate MAC-ehs entities.
30. The WTRU of claim 24 wherein the MAC-ehs entity is reset only when cell reselection results in an inter-Node B cell change.
31. The WTRU of claim 24 wherein the MAC-ehs entity is reset only when cell reselection results in an intra-node B cell change for a Node B that does not support MAC-ehs preservation.
32. The WTRU of claim 24 wherein the MAC-ehs entity is reset only if reordering queues are used.
33. The WTRU of claim 24 wherein the MAC-ehs entity is reset only if reordering queues are used and cell reselection results in an inter-Node B cell change or an intra-node B cell change for a Node B that does not support MAC-ehs preservation.
34. The WTRU of claim 24 wherein the controller resets the MAC-ehs entity in accordance with an indication from a network.
35. The WTRU of claim 24 wherein the controller flushes hybrid automatic repeat request (HARM) soft buffers.
36. The WTRU of claim 24 further comprising a radio link control (RLC) entity configured to send an RLC status report upon cell reselection.
37. The WTRU of claim 26 wherein the RLC status report is sent prior to sending the CELL UPDATE message and after selecting the target cell.
38. The WTRU of claim 36 wherein the RLC status report is included in a CELL UPDATE message.
39. The WTRU of claim 36 wherein the RLC status report is sent after receiving a CELL UPDATE CONFIRM message.
40. The WTRU of claim 24 wherein the system information includes an indication of enhanced Cell_FACH capability.
41. The WTRU of claim 24 wherein the HS-DSCH common system information includes at least one of a high speed shared control channel (HS-SCCH) scrambling code and channelization code, channel quality indicator (CQI) feedback information, the number of hybrid automatic repeat request (HARD) processes, memory partitioning, and a set of reserved HS-DSCH RNTIs (H-RNTIs).
42. A wireless transmit/receive unit (WTRU) for performing cell reselection while in a Cell_FACH state when only a source cell supports Enhanced Cell_FACH, the WTRU comprising:
a transceiver;
a high speed downlink shared channel (HS-DSCH) medium access control (MAC-ehs) entity for high speed downlink packet access (HSDPA) communication; and
a controller configured to, while in a Cell_FACH state, select a target cell, read system information broadcast from the target cell, clear a radio network temporary identity (RNTI) received in a source cell, reset the MAC-ehs entity configured in the source cell, prevent HS-DSCH reception by setting an HS-DSCH reception variable to FALSE, set up secondary common control physical channel (S-CCPCH) and random access channel (RACH) communication, and configure the transceiver to receive downlink transmission on an S-CCPCH.', 'a transceiver;', 'a high speed downlink shared channel (HS-DSCH) medium access control (MAC-ehs) entity for high speed downlink packet access (HSDPA) communication; and', 'a controller configured to, while in a Cell_FACH state, select a target cell, read system information broadcast from the target cell, clear a radio network temporary identity (RNTI) received in a source cell, reset the MAC-ehs entity configured in the source cell, prevent HS-DSCH reception by setting an HS-DSCH reception variable to FALSE, set up secondary common control physical channel (S-CCPCH) and random access channel (RACH) communication, and configure the transceiver to receive downlink transmission on an S-CCPCH.
43. The WTRU of claim 42 further comprising a radio link control (RLC) entity for sending an RLC status report upon cell reselection.
44. The WTRU of claim 43 wherein the RLC status report is sent prior to sending a CELL UPDATE message and after selecting the target cell.
45. The WTRU of claim 43 wherein the RLC status report is included in a CELL UPDATE message.
46. The WTRU of claim 43 wherein the RLC status report is sent after receiving a CELL UPDATE CONFIRM message.']
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SUMMARY
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Patent number:US8131294B2
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.