Abstract
A hybrid ARQ method for packet data transmission in a mobile communication system wherein previously transmitted packets are combined with retransmitted packets said packets being segmented into a plurality of protocol data units PDUs each being assigned a sequence number for identification purposes. According to the invention the sequence number is transmitted on a control channel which is separate from the data channel for transmitting the PDUs.
SEP Database
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| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 15/03/2010 | ISLD-201004-003 | PANASONIC CORP |
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| 4G | 20/08/2020 | ISLD-202010-016 | PANASONIC CORP |
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| 5G | 20/08/2020 | ISLD-202010-016 | PANASONIC CORP |
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SEP Database
Augmented SEP Database
There is no augmented declaration available yet
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| EP1156617A1 | 4G | 15/03/2010 | ISLD-201004-003 | PANASONIC CORP |
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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| EP1931077B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
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Technologies
Feedback
Product
Not Available
Use Cases
Wireless communication
Services
Not Available
Claim
1. A hybrid ARQ method for packet data transmission in a mobile communication system wherein previously transmitted data packets are combined with retransmitted packets, said method comprising:', 'segmenting data packets into a plurality of protocol data units PDUs;', 'assigning a sequence number for each of the PDUs for identification purposes;', 'transmitting the sequence numbers on a control channel; and', 'transmitting the PDUs on a data channel which is separate from the control channel on which the sequence numbers are transmitted.
2. The method of claim 1, wherein the data on the control channel for transmitting the sequence numbers is spread with a differentchannelization code than the data channel for transmitting the
3. The method according to claim 1, wherein the control channel for transmitting the sequence numbers uses a different time slot than the data channel for transmitting the PDUs.
4. The method according to claim 1, wherein the control channel for transmitting the sequence numbers has a different frequency than the data channel for transmitting the PDUs.
5. The method according to claim 1, wherein the data channel for transmitting the PDUs is a channel shared by several users.
6. The method according to claim 1, wherein the control channel for transmitting the sequence numbers is a dedicated channel DCH or a shared control channel.
7. The method according to claim 1, wherein a quality of service QoS of the control channel for transmitting the sequence numbers is independent from a QoS of the data channel for transmitting the PDUs by suitably controlling at least one of the parameters including transmission power, coding rate and spreading factor.
8. The method according to claim 1, wherein a plurality of sequence numbers are combined in a sequence number data unit SNDU.
9. The method according to claim 8, wherein an order of the sequence numbers in the SNDU corresponds to an order of arriving PDUs
10. The method according to claim 8, wherein the SNDU is encoded with a cyclic redundancy check CRC code
11. The method according to claim 8, wherein the SNDU is multiplexed with other signalling data or user data
12. The method according to claim 8, wherein the SNDU is sent together with an allocation message on the control channel for a shared uplink or downlink channel
13. The method according to claim 8, wherein the SNDU sent on the control channel is time offset from the corresponding PDU on the data channel
14. The method according to claim 8, wherein the SNDU is mapped to more than one frame of the control channel
15. The method according to claim 8, wherein a correct reception of a SNDU is indicated from a mobile station to a base station or vice versa
16. The method according to claim 8, wherein the SNDU is received before the corresponding PDUs arrive at a receiver
17. The method according to claim 8, wherein packet combining is only used when the SNDU is received correctly
18. The method according to claim 8, wherein packets are decoded without combining when the SNDU is not received correctly
19. The method according to claim 8, wherein in case that the SNDU is not received correctly, information from the sequence number in a PDU header on the data channel is combined with the SNDU data from the control channel to decode the SNDU correctly.
20. The method according to claim 8, wherein the SNDU combines sequence numbers for transport channels using said hybrid ARQ method on a shared channel as well as sequence numbers for transport channels using said hybrid ARQ method on a dedicated channel.
21. The method according to claim 1, wherein the sequence number is included in a header of each PDU (type III ARQ).
22. The method according to claim 1, wherein a network control unit transmits a signal to at least one of a base station and a mobile station indicating whether said hybrid ARQ method is to be employed or not.
23. The method according to claim 1, wherein a mobile station transmits a signal to a base station or vice versa indicating whether said hybrid ARQ method shall be employed or not.
24. The method according to claim 1, wherein at least one of a base station and a mobile station recognizes, from an existence of a SDNU, whether said hybrid ARQ method is to be employed or not.
25. The method according to claim 1, wherein the control channel for transmitting the sequence numbers is coded with a lower coding rate compared to the data channel for transmitting the PDUs.
26. The method according to claim 1, further comprising:', 'correlating sequence numbers received from the control channel with corresponding PDUs received from the data channel based upon an allocation message TFCI transmitted on the control channel and a time offset between the control channel and the data channel.']
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