Fixed HS-DSCH or E-DCH allocation for VoIP (or HS-DSCH without HS-SCCH/E-DCH without E-DPCCH)

摘要

In order to reduce the HS-SCCH overhead, a fixed time allocation approach could be used. In that case, the scheduling time of each VoIP user is semi-static and thus there is no need to transmit e.g. HS-SCCH toward the UE for the initial transmissions, if the UE knows when to receive data on the HS-DSCH and what transport format is used. There are at least two ways of implementing this: 1) HS-SCCH/E-DPCCH signalling to indicate parameters of a first transmission, with subsequent transmissions using the same parameters (and HS-SCCH/E-DPCCH always sent when changes needed), or 2) fixed allocation, RRC signalling used to allocate users and tell the default transport parameters.

主权项

1. A method comprising:
signalling control information from a radio access network to a mobile station on a signalling channel of a radio interface between the mobile station and the radio access network, the control information for use in processing data packets transmitted from the radio access network to the mobile station on a data channel of the radio interface, the signalling comprising: selectively signalling the control information on the signalling channel for the data packets for indicating parameters of a first transmission of the data packets with subsequent transmissions of the data packets using the same parameters, wherein the parameters comprise at least one of user equipment identifier, modulation scheme and channelization codes used on the data channel, transport block sizes, Hybrid Automatic Repeat reQuest process identifier, Hybrid Automatic Repeat reQuest redundancy and constellation version and new data indicator, and wherein a radio resource control layer is used to indicate default transport parameters for the data packets and, for subsequent data packets, the control information is only selectively signalled if one or more corresponding subsequent transport parameters differ from one or more corresponding default values.