Abstract
Method for transmitting a status report for a sequence of data transmitted along a wireless communication link between a wireless device and a network having several base stations said link having a transmitting side and a receiving side. The method comprises: on the receiving side determining status information on data units of the sequence including a first set of data units comprising a first non-received data unit in the sequence and data units following said first non-received data unit the status information indicating whether each data unit has been received or not on the receiving side; and transmitting from the receiving side to the transmitting side a status report containing a bitmap providing the status information for a second set of data units included in said first set such that the bitmap has a predetermined maximum size.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
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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 | Status | National Phase Entries | |||||
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S1
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Technologies
Protocol Stack Mobility and handover
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Mobility Management
Claim
1. A wireless communication method for transmitting a status report for a sequence of data units transmitted over a wireless communication link between a wireless device and a network having a plurality of base stations, the wireless communication link having a data unit transmitting side and a data unit receiving side, the method comprising:
receiving, by the data unit receiving side, the data units of the sequence, wherein the received data units of the sequence include a first set of data units starting at a first non-received data unit in the sequence and further comprising data units following the first non-received data unit in the sequence;
determining, by the data unit receiving side, status information related to the data units of the sequence, the status information indicating whether each of the data units of the sequence has been received by the data unit receiving side; and
transmitting, from the data unit receiving side to the data unit transmitting side, the status report comprising a bitmap providing the status information for only a subset of the first set of data units,
wherein an overhead is created by the transmission of the status report,
wherein the bitmap has a maximum size for reducing the overhead, and
wherein the status report is a Protocol Data Convergence Protocol (PDCP) status report.', 'receiving, by the data unit receiving side, the data units of the sequence, wherein the received data units of the sequence include a first set of data units starting at a first non-received data unit in the sequence and further comprising data units following the first non-received data unit in the sequence;', 'determining, by the data unit receiving side, status information related to the data units of the sequence, the status information indicating whether each of the data units of the sequence has been received by the data unit receiving side; and', 'transmitting, from the data unit receiving side to the data unit transmitting side, the status report comprising a bitmap providing the status information for only a subset of the first set of data units,', 'wherein an overhead is created by the transmission of the status report,', 'wherein the bitmap has a maximum size for reducing the overhead, and', 'wherein the status report is a Protocol Data Convergence Protocol (PDCP) status report.
2. The method as claimed in claim 1, further comprising receiving at least one data unit of said subset of said first set of data units from the data unit transmitting side, wherein the at least one data unit of said subset of said first set of data units was not previously received by the data unit receiving side.
3. The method as claimed in claim 1, further comprising initiating a handover of the wireless communication link with the wireless device from a source base station to a target base station, before transmitting the status report from the data unit receiving side to the data unit transmitting side of the wireless communication link.
4. The method as claimed in claim 3, wherein the wireless device is on the data unit receiving side and the network is on the data unit transmitting side of the wireless communication link, at least some data units of the sequence are forwarded from the source base station to the target base station, the status report is transmitted from the wireless device to the target base station and data units of said subset of said first set of data units are selectively retransmitted from the target base station to the wireless device.
5. The method as claimed in claim 3, wherein the wireless device is on the data unit transmitting side and the network is on the data unit receiving side of the wireless communication link, the status information related to the data units of the sequence is sent from the source base station to the target base station, the status report is transmitted from the target base station to the wireless device and data units of said subset of said first set of data units are selectively retransmitted from the wireless device to the target base station.
6. The method as claimed in claim 1, wherein the status report further comprises a pointer designating one of the data units of the sequence with reference to which the data units of the subset of said first set of data units can be identified on the data unit transmitting side of the wireless communication link.
7. The method as claimed in claim 1, further comprising selecting, by the data unit receiving side, the subset of said first set of data units to comprise consecutive data units of the data units of the sequence.
8. The method as claimed in claim 7, wherein the consecutive data units include data units following immediately the first non-received data unit in the sequence.
9. The method as claimed in claim 7, wherein the consecutive data units include a maximal number of non-received data units of the first set of data units
10. The method as claimed in claim 7, wherein the consecutive data units include a maximal number of received data units of the first set of data units
11. The method as claimed in claim 7, wherein the consecutive data units include a last received data unit of the first set of data units
12. The method as claimed in claim 1, wherein the maximum size of the bitmap is fixed for every wireless communication link
13. The method as claimed in claim 1, wherein the maximum size of the bitmap is set at the wireless communication link setup or within the framework of a handover of the wireless communication link
14. The method as claimed in claim 1, wherein the maximum size of the bitmap or information from which the maximum size of the bitmap can be derived is signaled to the data unit receiving side for building the status report
15. The method as claimed in claim 1, wherein the maximum size of the bitmap or information from which the maximum size of the bitmap can be derived is broadcasted by the network in system information messages
16. The method as claimed in claim 1, wherein the maximum size of the bitmap is 10 bits
17. A wireless device for receiving a sequence of data units transmitted from a network having a plurality of base stations, the wireless device comprising:
a receiving unit for receiving the data units of the sequence, wherein the received data units of the sequence include a first set of data units starting at a first non-received data unit in the sequence and further comprising data units following the first non-received data unit in the sequence;
a determination unit for determining status information related to the data units of the sequence, the status information indicating whether each of the data units of the sequence has been received by the wireless device; and
a transmission unit for transmitting, to the network, a status report comprising a bitmap providing the status information for only a subset of the first set of data units,
wherein an overhead is created by the transmission of the status report,
wherein the bitmap has a maximum size for reducing the overhead, and
wherein the status report is a Protocol Data Convergence Protocol (PDCP) status report.', 'a receiving unit for receiving the data units of the sequence, wherein the received data units of the sequence include a first set of data units starting at a first non-received data unit in the sequence and further comprising data units following the first non-received data unit in the sequence;', 'a determination unit for determining status information related to the data units of the sequence, the status information indicating whether each of the data units of the sequence has been received by the wireless device; and', 'a transmission unit for transmitting, to the network, a status report comprising a bitmap providing the status information for only a subset of the first set of data units,', 'wherein an overhead is created by the transmission of the status report,', 'wherein the bitmap has a maximum size for reducing the overhead, and', 'wherein the status report is a Protocol Data Convergence Protocol (PDCP) status report
18. The wireless device as claimed in claim 17, wherein the maximum size of the bitmap is 10 bits.19. A network having a plurality of base stations, arranged for receiving a sequence of data units transmitted from a wireless device, the network comprising:
a receiving unit for receiving the data units of the sequence, wherein the received data units of the sequence include a first set of data units starting at a first non-received data unit in the sequence and further comprising data units following the first non-received data unit in the sequence;
a determination unit for determining status information related to the data units of the sequence, the status information indicating whether each of the data units of the sequence has been received by the network; and
a transmission unit for transmitting, to the wireless device, a status report comprising a bitmap providing the status information for only a subset of the first set of data units,
wherein an overhead is created by the transmission of the status report,
wherein the bitmap has a maximum size for reducing the overhead, and
wherein the status report is a Protocol Data Convergence Protocol (PDCP) status report.', 'a receiving unit for receiving the data units of the sequence, wherein the received data units of the sequence include a first set of data units starting at a first non-received data unit in the sequence and further comprising data units following the first non-received data unit in the sequence;', 'a determination unit for determining status information related to the data units of the sequence, the status information indicating whether each of the data units of the sequence has been received by the network; and', 'a transmission unit for transmitting, to the wireless device, a status report comprising a bitmap providing the status information for only a subset of the first set of data units,', 'wherein an overhead is created by the transmission of the status report,', 'wherein the bitmap has a maximum size for reducing the overhead, and', 'wherein the status report is a Protocol Data Convergence Protocol (PDCP) status report.
20. The network as claimed in claim 19, wherein the maximum size of the bitmap is 10 bits.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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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.