Abstract
A method and apparatus for minimizing data forwarding between Evolved Node Bs (ENBs) during a handover. A User Equipment (UE) sends a status report to an ENB of a source cell immediately before the handover occurs. In this manner a target cell avoids retransmission of the RLC PDUs which were successfully transmitted but have not yet been ACKnowledged (ACKed) by the UE thereby minimizing the amount of data being forwarded from the ENB of the source cell to an ENB of the target cell.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 09/06/2010 | ISLD-201006-013 | SAMSUNG | Yes | Family Member | ||||
| 4G | 07/09/2010 | ISLD-201009-009 | SAMSUNG |
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| 4G | 08/05/2019 | ISLD-201905-012 | SAMSUNG |
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| 4G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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| 5G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US2008069053A1 | 4G | 09/06/2010 | ISLD-201006-013 | SAMSUNG | Yes | Basis Patent | ||||
| US2008069053A1 | 4G | 07/09/2010 | ISLD-201009-009 | SAMSUNG |
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Yes | Basis Patent | |||
| US2008069053A1 | 4G | 08/05/2019 | ISLD-201905-012 | SAMSUNG |
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Yes | Basis Patent | |||
| US2008069053A1 | 4G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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Yes | Basis Patent | |||
| US2008069053A1 | 5G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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Yes | Basis Patent | |||
| US7957349B2 | 4G | 09/06/2010 | ISLD-201006-013 | SAMSUNG | Yes | Basis Patent | ||||
| US7957349B2 | 4G | 07/09/2010 | ISLD-201009-009 | SAMSUNG |
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Yes | Basis Patent | |||
| US7957349B2 | 4G | 08/05/2019 | ISLD-201905-012 | SAMSUNG |
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Yes | Basis Patent | |||
| US7957349B2 | 4G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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Yes | Basis Patent | |||
| US7957349B2 | 5G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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Yes | Basis Patent | |||
| EP1903820A1 | 4G | 09/06/2010 | ISLD-201006-013 | SAMSUNG | Yes | Family Member | ||||
| EP1903820A1 | 4G | 07/09/2010 | ISLD-201009-009 | SAMSUNG |
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No | Family Member | |||
| EP1903820A1 | 4G | 08/05/2019 | ISLD-201905-012 | SAMSUNG |
S1
S2
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No | Family Member | |||
| EP1903820A1 | 4G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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S2
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No | Family Member | |||
| EP1903820A1 | 5G | 30/07/2019 | ISLD-201907-045 | SAMSUNG |
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No | Family Member | |||
| EP1903820B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration Mobility and handover
Product
User Equipment (UE/Terminal)Base Station (eNB/gNB)
Use Cases
Wireless communication
Services
Network access
Claim
1. A method for performing a handover from a source cell to a target cell by a User Equipment (UE) in a mobile communication system, the method comprising: sending a measurement report on received signal strengths of adjacent cells, to an Node B of the source cell; sending, to the Node B of the source cell, a status report including a sequence number of successfully received packet data and a sequence number of missing packet data; and upon a receipt of a handover command from the Node B of the source cell, performing a handover.
2. The method of claim 1, further comprising: after sending the measurement report, receiving a handover preparation request from the Node B of the source cell; and sending the status report after receiving the handover preparation request.
3. The method of claim I5 further comprising: after sending the measurement report, determining whether the measurement report satisfies a handover condition predefined between the UE and the Node B of the source cell; and when the measurement report satisfies the handover condition, sending the status report
4. A User Equipment (UE) apparatus for performing a handover from a source cell to a target cell in a mobile communication system, the apparatus comprising: a measurement controller for measuring received signal strengths of adjacent cells; a radio resource controller for generating a message using the measurement result received from the measurement controller, and sending the generated message to an Node B of the source cell; and a radio link controller for, upon a receipt of a status report command from the radio resource controller, generating a status report message before performing a handover to the target cell, and sending the generated status report message to the Node B of the source cell.
5. The UE apparatus of claim 4, wherein the measurement controller determines whether the measurement result satisfies a handover condition predefined between the UE and the Node B of the source cell, and sends the determination result to the radio resource controller; and wherein the radio resource controller sends the status report command to the radio link controller according to the determination result of the measurement controller.
6. The UE apparatus of claim 4, wherein the radio resource controller sends the status report command to the radio link controller upon a receipt of a handover preparation request from the Node B of the source cell.
7. The UE apparatus of claim 4, wherein the status report message includes a sequence number of successfully received packet data and a sequence number of missing packet data.
8. A method for sending a buffer status report by a User Equipment (UE) in a mobile communication system, the method comprising: if a measurement report of a first type having a high handover-causing possibility occurs, sending a request for a resource allocation for a buffer status report to an Node B; sending a buffer status report including information on retransmission- required packet data over resources allocated by the request; and sending a measurement report and a downlink status report and retransmitting the retransmission-required packet data over resources allocated according to the buffer status report.
9. The method of claim 8, wherein the buffer status report further comprises a size of a downlink status report configured at a transmission time of the buffer status report, and a size of data stored in a buffer of a radio bearer group to which the measurement report of the first type belongs
10. The method of claim 9, further comprising: if the measurement report of the first type occurs, setting a priority of the downlink status report and the retransmission-scheduled data to a predetermined priority; wherein the buffer status report further includes an identifier of a radio bearer group corresponding to a priority to be applied to the downlink status report and the retransmission-scheduled data
11. A User Equipment (UE) apparatus for sending a buffer status report to an Node B of a source cell in a mobile communication system, the apparatus includes: a measurement controller for measuring received signal strengths of adjacent cells; a radio resource controller for generating a message using a measurement result received from the measurement controller, and sending the generated message to the Node B of the source cell; a radio link controller for generating a status report message upon receipt of a status report command from the radio resource controller before performing a handover to a target cell, and sending the generated status report message to the Node B of the source cell; a buffer status report controller for starting a buffer status report procedure under a control of the radio resource controller if a measurement report of a first type having a high handover-causing possibility occurs, and configuring a buffer status report including information on retransmission-scheduled data; and a physical layer for sending the configured buffer status report to the Node B
12. The UE apparatus of claim 11, wherein the physical layer sends a measurement report and a downlink status report and retransmits the retransmission-required packet data over resources allocated according to the buffer status report
13. The UE apparatus of claim 12, wherein the buffer status report further includes a size of a downlink status report configured at a transmission time of the buffer status report, and a size of data stored in a buffer of a radio bearer group to which the measurement report of the first type belongs
14. The UE apparatus of claim 13, wherein if the measurement report of the first type occurs, the radio link controller sets a priority of the downlink status report and the retransmission-scheduled data to a predetermined priority; and wherein the buffer status report further includes an identifier of a radio bearer group corresponding to a priority to be applied to the downlink status report and the retransmission-scheduled data.']
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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.