Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2003-04-25
2008-05-20
Duong, Frank (Department: 2616)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
Reexamination Certificate
active
07376119
ABSTRACT:
In a method of controlling downlink transmission timing at a radio network controller (RNC) in a communication system, a relative window is determined. The relative window represents a time difference between an arrival time of a data frame at the RNC from a core network, and a target transmission time for transmitting the data frame from the RNC to a Node-B. Boundary thresholds that adjoin the relative window are set, and a target arrival time that a data frame is to be received at the RNC is compared to the thresholds. The RNC may send a request to advance or retard sending of the data frame to the core network, depending on whether target arrival time of the data frame is outside one of the thresholds. A data frame received within the relative window is transmitted from the RNC to a Node-B.
REFERENCES:
patent: 2002/0105933 (2002-08-01), Higuchi
patent: 2003/0048810 (2003-03-01), Kermade et al.
Abraham et al., Effect of Timing Adjustment on lub Link Capacity for Voice Traffic in W-CDMA Systems, IEEE, pp. 311-315, Sep. 2002.
ARIB STD-T63-25.402 V4.5.0, Synchronization in UTRAN Stage 2 (Release 4), pp. 1-43, 2002.
3G TS 25.415 V3.1.0, UTRAN lu Interface User Plane Protocols, pp. 1-54, 2000.
Duong Frank
Lucent Technologies - Inc.
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