Method and communications systems for transmitting data for a combination of several services via jointly used physical channels
View Patent ↗For a communication system (e.g. UMTS with CDMA radio interface), the invention draws a distinction between services with high and low data rate dynamics and uses a matched type of signaling for the transport formats currently being used. The data rate of the data for a service can fluctuate greatly and/or rapidly over time (high dynamics), or may fluctuate only a little and/or slowly (low dynamics). The data for the services are transmitted via a common physical channel, with in-band signaling being used for signaling the transport format for the services with high data rate dynamics, and with signaling in a separate channel being used for the services with low data rate dynamics.
1. A method comprising:
specifying one or more first transport formats for first services and a second transport format for a second service, the first services having higher data rate dynamics than the second service;
transmitting a combination of data for the first services and data for the second service over a first channel based on the first and second transport formats;
signaling, in-band in the first channel, the one or more first transport formats for the first services; and
signaling, in a second channel, the second transport format for the second service, the first channel and the second channel comprising separate channels.
2. The method of claim 1 , wherein all data is transmitted via a radio interface of a radio communication system.
3. The method of claim 2 , wherein the radio interface comprises broadband frequency channels that include the first and second channels; and
wherein the first and second channels are separated by at least one of a spread code and a time slot.
4. The method of claim 1 , wherein the second channel comprises a monitoring channel.
5. The method of claim 1 , wherein data rate dynamics corresponds to a fluctuation in data rate over time, the higher rate dynamics having a higher fluctuation in data rate over time than the lower data rate dynamics; and
wherein signaling the second transport format occurs if a data rate for the second services changes.
6. The method of claim 1 , further comprising:
mapping data for the first and second services onto a coded common transport channel; and
spreading data on the coded common transport channel over a plurality of physical channels, at least one of the physical channels including the first channel.
7. The method of claim 1 , further comprising:
signaling a partial information item, the partial information item corresponding to a combination of transport formats for services with a specific type of data rate dynamics, the specific type of data rate dynamics comprising the higher data rate dynamics, the partial information item comprising a binary code having a number that is less than a total number of permitted combinations of services.
8. The method of claim 7 , wherein the data is transmitted over the first channel in frames; and
wherein the partial information item is transmitted in at least one of the frames.
9. The method of claim 7 , wherein the data is transmitted over the first channel in frames;
wherein the method further comprises setting a signaling capacity in at least one of the first channel and the second channel; and
wherein the partial information item is signaled via a plurality of frames.
10. A communication system comprising:
means for transmitting data for a combination of first services and a second service over a first channel, the first services having a higher data rate dynamics than the second service; and
means for:
(i) signaling, in-band in the first channel, one or more first transport formats for the first services; and
(ii) signaling, in a second channel, a second transport format for the second service, the first channel and the second channel comprising separate channels.
11. The communication system of claim 10 , wherein data rate dynamics corresponds to a fluctuation in data rate over time, the higher data rate dynamics having a higher fluctuation in data rate over time than the lower data rate dynamics.
12. The communication system of claim 10 , wherein the second channel comprises a monitoring channel.
13. The communication system of claim 11 , wherein the means for signaling signals the second transport format if a data rate changes for the the second service.
14. The communication system of claim 10 , further comprising:
means for mapping data for the first and second services onto a coded common transport channel; and
means for spreading data on the coded common transport channel over a plurality of physical channels, at least one of the physical channels including the first channel.
15. The communication system of claim 10 , wherein the means for transmitting comprises a radio communication system.
16. The communication system of claim 10 , wherein the means for signaling signals a partial information item, the partial information item corresponding to transport formats for services with a specific type of data rate dynamics, the specific type of data rate dynamics comprising higher data rate dynamics for the first services, the partial information item comprising a binary code having a number that is less than a total number of permitted combinations of services.
17. The communication system of claim 16 , wherein the data is transmitted over the first channel in frames, and the partial information item is transmitted in at least one of the frames.
18. The communication system of claim 16 , wherein the data is transmitted over the first channel in frames; and
wherein the communication system further comprises:
means for setting a signaling capacity in at least one of the first channel and the second channel; and
means for transmitting the partial information item via a plurality of frames.
19. The method of claim 1 , wherein data rate dynamics corresponds to a fluctuation in data rate over time, the higher data rate dynamics having a higher fluctuation in data rate over time than lower data rate dynamics.
20. The method of claim 19 , further comprising:
detecting a change in a data rate for the second service; and
in response to the change, signaling a new transport format in the second channel.
21. The method of claim 19 , further comprising:
signaling a standard data rate at a beginning of a connection to a receiver, the receiver for receiving transmitted data for the first service and the second service; and
signaling a data rate of zero at an end of the connection.
22. The method of claim 1 , further comprising:
evaluating the data at a receiver based on the first and second transport formats.
23. The communication system of claim 10 , further comprising:
a receiver to receive the data from the means for transmitting, the receiver comprising means for evaluating the data based on the first and second transport formats.