Method for transmitting data packets via a radio interface of a mobile radio system

• US 20040028078A1
• Filed: 08/25/2003
• Published: 02/12/2004
• Est. Priority Date: 10/09/2000
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Beckmann, Mark, Otte, Andreas, Eckert, Michael, Hans, Martin, Hallmann, Udo
• Granted Patent: US 7,333,443 B2
• Time in Patent Office: Days
• US Class Current: 370/469
• CPC Class Codes: H04L 45/245 Link aggregation, e.g. trunking
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 72/00 Local resource management

Abstract

A method is provided for transmitting data packets via a radio interface of a mobile radio system, wherein a control unit of a first entity secondary to the control unit in a data link layer transmits information via its logical channels serving as service access points in the form of a configuration message, with the configuration message including information about which logical channels are to be mapped onto which transport channels serving as service access points for a bit transmission layer, about which a set of transport formats predetermined for each of the transport channels and a set of permitted combinations of transport formats for all transport channels, with each transport format having a set of parameters determining transmission characteristics of the transport channel configured with the corresponding transport format, and about which transport formats are permitted for each logical channel or about which a value is predetermined as fixed for at least one of the parameters from the parameter set for transport formats for one logical channel, a number of logical channels or for all logical channels, and wherein the first entity selects a transport format for each of the transport channels taking into account an assignment defined in the configuration message of transport formats to logical channels or of the parameter value predetermined for each of the logical channels, such that the resulting combination of transport formats corresponds to one of the transport combinations defined as permissible and wherein the first entity transmits the data packets at the logical channels to the transport channels of the bit transmission layer assigned to each of the logical channels by the configuration message and initiates the transmission of the data packets via the radio interface.

Claims

8. A method for transmitting data packets via a radio interface of a mobile radio system, the method comprising the steps of:

transmitting information, by a controlled unit of a first entity secondary to the control unit in a data link layer, via logical channels of the control unit serving as service access points, the information formed as a configuration message, wherein the configuration message includes information about which logical channels are to be mapped onto which transport channels serving as service access points for a bit transmission layer, about which a set of transport formats predetermined for each of the transport channels and a set of permitted combinations of transport formats for all transport channels, with each transport format having a set of parameters determining transmission characteristics of the transport channel configured with the corresponding transport format, and about which one of transport formats are permitted for each logical channel and a value is predetermined as fixed for at least one of the parameters from the parameter set for transport formats for one of one logical channel, a plurality of logical channels and all logical channels;

selecting a transport format, via the first entity, for each of the transport channels taking into account an assignment defined in the configuration message of one of transport formats to logical channels and the parameter value predetermined for each of the logical channels, such that a resulting combination of transport formats corresponds to one of the transport combinations defined as permissible; and

transmitting the data packets, via the first entity, at the logical channels to the transport channels of a bit transmission layer assigned to each of the logical channels by the configuration message and initiating the transmission of the data packets via the radio interface.

9. A method for transmitting data packets via a radio interface of a mobile radio system as claimed in claim 8, wherein the set of parameters creating a transport format includes a first group of static parameters predetermined by the control unit and a second group of variable parameters which can be influenced by the first entity.

10. A method for transmitting data packets via a radio interface of a mobile radio system as claimed in claim 9, wherein a length of a transmission interval within which the bit transmission layer can process data contiguously serves as a parameter which is one of static and variable.

11. A method for transmitting data packets via a radio interface of a mobile radio system as claimed in claim 9, wherein the variable parameters include one of a size and a length of the data blocks transmitted to the transport channels of the first entity, as well as a member of the data blocks.

12. A method for transmitting data packets via a radio interface of a mobile radio system as claimed in claim 8, the method further comprising the step of generating data packets from the data stream, via a second entity in the data link layer, at a service access point for a bearer service upon a request of the first entity and transmitting the data packets to the assigned logical channels.

13. A method for transmitting data packets via a radio interface of a mobile radio system as claimed in claim 12, wherein the second entity buffers the data stream fed in via the service access point.

14. A method for transmitting data packets via a radio interface of a mobile radio system as claimed in claim 12, wherein a length and a number of the data packets generated by the second entity correspond to a length and a number of the data blocks transmitted to the transport channels by the first entity.