초록 ▼

The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplin

The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.

대표청구항 ▼

What is claimed is: 1. A single carrier/DS-CDMA packet transmission method that expands a bandwidth of information symbols by a sequence of spreading codes, and transmits packets by use of spreading signals having an expanded bandwidth, comprising: assigning a predetermined fixed time slot in a dat

What is claimed is: 1. A single carrier/DS-CDMA packet transmission method that expands a bandwidth of information symbols by a sequence of spreading codes, and transmits packets by use of spreading signals having an expanded bandwidth, comprising: assigning a predetermined fixed time slot in a data frame for dedicated use for transmission of a reservation demand packet, the reservation demand packet being a request for an allocation of a spreading code and/or a time slot; assigning, in said data frame, slots other than the predetermined fixed time slot for a transmission of data packets; code-multiplexing said data frame with one of the spreading codes so as to code-multiplex information in the predetermined fixed time slot and information in the slots other than the predetermined fixed time slot; and transmitting the code-multiplexed data frame containing the reservation demand packet and data packets. 2. The packet transmission method as claimed in claim 1, wherein reservation demand packet transmission admission probability determined in advance is lowered when a channel occupancy rate of the data packets exceeds a predetermined value. 3. A mobile-radio packet transmission method using the packet transmission method of claim 2, wherein a base station measures the channel occupancy rate of the data packet, and determines the reservation demand packet transmission admission probability and a number indicative of how many spreading codes are available for the reservation demand packets. 4. The mobile-radio packet transmission method of claim 3, wherein the base station inserts the number of spreading codes available for the reservation demand packets and the reservation demand packet transmission admission probability into an information channel of a downlink by time-sharing. 5. A single carrier/DS-CDMA packet transmission method that expands a bandwidth of information symbols by a sequence of spreading codes, and transmits packets by use of spreading signals having an expanded bandwidth, comprising: assigning one of k (0