Abstract: A method and apparatus for performing an enhanced random access procedure in a Cell_FACH state are disclosed. A wireless transmit/receive unit (WTRU) transmits a random access channel (RACH) preamble for random access. If a positive acknowledgement (ACK) is received in response to the RACH preamble, the WTRU enters a contention resolution phase and transmits a message via an enhanced dedicated channel (E-DCH). If contention resolution fails, the RACH preamble is retransmitted. A contention back-off timer may be used for retransmission. A physical random access channel (PRACH) code may be reselected. The RACH preamble may be retransmitted using a reserved PRACH resource so that E-DCH resource is allocated to the collided WTRUs. Data transmitted during the contention resolution phase may remain in a hybrid automatic repeat request (HARQ) buffer. The MAC-i/is entity may be reset. All data sent during the contention resolution phase may be stored in a temporary buffer.

Abstract: The invention provides a method, an apparatus, and a computer program for supporting multiple connections to a network or a plurality of networks. Support for multiple connections is enabled by establishing a connection of a first type to a network, receiving a request for a connection of the first type, registering a virtual connection as a response to receiving said request, receiving a request for establishing a connection of a second type through the virtual connection, associating the virtual connection with the connection of the first type, and establishing the connection of the second type through the connection of the first type.

Abstract: A method of managing data transmission in a mesh-topology ad-hoc network. The method includes transmitting management information by a plurality of mobile stations of the network, selecting a mobile station to serve as a master, responsive to the transmitted management information, transmitting to the master requests for bandwidth, allocating bandwidth by the master, responsive to the requests and forwarding the bandwidth allocation to the mobile stations of the network.

Abstract: Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth, and a cable modem system including one or more demodulation tuners to receive and demodulate one or more upstream radio frequency (RF) signals. An RF signal includes an encoded carrier wave having a carrier frequency of between 5 MHz and 19.6 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. A modulation order of the QAM for the first upstream RF signal is at least 32, and at least one demodulation tuner of the cable modem system is configured to receive and demodulate the first upstream RF signal.

Abstract: The invention relates to systems and methods for spectrum sharing and communication among several wireless communication networks with overlapping service areas (or cells); especially to Wireless Regional Area Networks (WRANs). Particular embodiments of the invention disclose using a conference channel to communicate between base stations. Other embodiments use slotted coexistence windows within frames to transmit and receive information, including for reserving transmission times within subsequent frames.

Abstract: Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).

Abstract: Briefly, in accordance with one or more embodiments, a first radio is operated in a first coexistence mode between the first radio and a second radio. The first radio monitors a first signal received from a third radio to determine if the third radio is active. In the event the third radio is active, the first radio switches to a second coexistence mode between the first radio and the third radio, and the first radio then operates in the second coexistence mode.

Abstract: An exemplary method for reserving medium access in an ad hoc network comprises transmitting a reservation request by a reservation owner, the reservation request identifying a reservation allocation, a reservation target, and a reservation type. The reservation type identifies exclusive use of the reservation allocation by the reservation owner and the reservation target during a reservation period. The reservation target may employ a prioritized contention access (PCA) scheme to access the reservation allocation. Alternatively, an idle portion of the reservation allocation may be subdivided into a plurality of slots including even slots and odd slots, and the reservation owner gains access to the idle portion by starting to transmit during an even slot, while the reservation target gains access to the idle portion by starting to transmit during an odd slot.

Abstract: In a method of improved channel-sounding transmissions between a base station in communication with a user equipment in a telecommunication system, the user equipment receiving (S0) an assigned channel-sounding transmission pattern from the base station, and transmitting (S1) a channel-sounding signal to the base station based on the assigned channel-sounding transmission pattern and on available uplink data at the user equipment.

Abstract: A method in a wireless communication terminal (103) including receiving a plurality of sub-frames having time-frequency resource elements and resource allocation fields associated with a corresponding sub-frame, wherein the resource allocation fields indicate a resource assignment. In another embodiment, terminal receives a radio frame comprising a plurality of sub-frames and a frequency diverse allocation field indicating frequency diverse resource allocations in multiple sub-frames of the radio frame.

Abstract: Requests of resources of uplink flows towards a base station (BS) and/or downlink flows towards end nodes are computed by each requesting node on an end-to-end basis. Each requesting node issues a cumulative request given by summing up the same request for each link separating the node from the BS plus each link separating the BS from the destination node, enabling the centralized node to perform connection based scheduling. The BS in response to all cumulative requests grants uplink and/or downlink resources for each link. The profile of grants is equal to the profile of requests when the amount of resources requested is below the maximum net throughput on MAC layer. When not below the maximum net through-put on MAC layer, the ideal profile of grants is normalized with respect to a ratio between the maximum net throughput on MAC layer and the amount of the overall requested resources.

Abstract: According to the known IEEE 802.11s Draft Standard for WLAN Mesh Networking, version D5.0, the size of an information element is restricted to a length of 255 octets. Due to the definition of an MCCAOP advertisements element as a general information element this restriction is a major drawback leading to a maximum of 62 MCCA reservations to be advertised by an MCCAOP advertisements element. Although this number of reservations might be sufficient in the majority of situations, it is easily imaginable that there are situations which could require an advertisement exceeding this limit of 62 MCCA reservations. According to the disclosure, an MCCAOP advertisement—which is a set of MCCAOP reservations that needs to be advertised—is split over multiple MCCAOP advertisements elements. This may advantageously allow advertising more than 62 MCCAOP reservations to neighboring mesh nodes in a wireless mesh network which is configured to use MCCA.

Abstract: Channel assignment for access points (APs) in a wireless network includes determining a bottleneck client in an interference relationship, and determining a channel assignment for the APs that maximizes a normalized throughput of the bottleneck client. The normalized throughput is assigned to the bottleneck client, and the bottleneck client is assigned to a fixed set.

Abstract: A method for sharing a channel in a communication system is disclosed. The method includes receiving scheduling information including information about a channel time reserved by other user devices, and transmitting data through the reserved channel time if a result of performing scanning in the reserved channel time indicates that no interference occurs, wherein the communication system performs communication using beam signals which are directional. If the signals are highly directional, the channel sharing method enables a plurality of user devices to share a channel, thereby increasing the efficiency of channel use.

Abstract: A fixed phase shift for each of a plurality of radio frequency signal components directed to or received from a plurality of antenna elements (100A, 100B) is formed in a phase shifter (102). A desired antenna beam pattern with at least one grating lobe is formed on the basis of the phase-shifted radio frequency signal components of the antenna elements (100A, 100B) in a predefined antenna structure.

Abstract: An improved distributed operating system over a network of computer systems is described. Existing distributed operating systems have transmission performance limitations dictated by their inability to (1) reliably handle transient communication failures and rapid node reboots, (2) provide a transmission protocol that adapts to link reliability, and (3) allow transmissions to occur over an arbitrary combinations of communication links. The systems and methods described herein solve these problems by providing a reliable node-to-node session protocol that offers high performance message delivery and multi-interface management and support. This is done by transmitting all data between two nodes of the operating system over a single connection that may dynamically exploit multiple interfaces between the nodes.

Abstract: A method for transmitting data in a transmitting device of a wireless network comprises transmitting one or more data packets to a receiving device via a reserved region comprising channel resources allocated by a coordinator, and transmitting channel time extension information for requesting channel time extension to the receiving device, in order to transmit the data packets on an unreserved region in which the coordinator does not allocate channel resources to any devices.

Abstract: Methods of transmitting information relating to a quality of service are shown, which information is to be transmitted in at least one direction between a first device 30 and a second device 20. A first method comprises at least at one of the devices 20, 30 assembling a protocol message containing information other than the information relating to a quality of service and attaching the quality of service related information to the protocol message. A second method comprises forming the information relating to a quality of service inside at least one of a header field and an attribute of a protocol message. The disclosure relates equally to corresponding software codes, devices 20, 30, network elements and systems.

Abstract: Transmitting information using a preamble of a Random Access Channel (RACH) in an Evolved Universal mobile Telecommunications System (E-UMTS) is provided. A preamble transmission is used to inform a base station of specific information when a terminal uses a RACH and the base station efficiently allocates radio resources for data transmission to the terminal according to the specific information. Delay time before the terminal transmits data is reduced and unnecessary consumption of radio resources is minimized.

Abstract: A method for a user equipment (UE) to receive a downlink signal, the method including receiving a first downlink control channel identified by a temporary cell identifier (Temporary C-RNTI) from a base station, the first downlink control channel including a first downlink assignment signal having a new data indicator (NDI) with a first value; receiving a second downlink control channel identified by a cell identifier (C-RNTI) from the base station, the second downlink control channel including a second downlink assignment signal having the NDI with a second value; and determining if the NDI has been toggled compared to the NDI previously received from the base station. Further, the UE ignores the NDI with the first value received through the first downlink control channel identified by the temporary cell identifier (Temporary C-RNTI). The method also includes receiving the downlink signal based on the determining.

Abstract: A method and wireless multi-cell communication system for providing high speed downlink packet access (HSDPA) services. The system includes a radio network controller (RNC) in communication with a plurality of base stations. The RNC sends a control signal to at least one base station having a plurality of timeslots, e.g., in a time division duplex (TDD) system and/or frames including transmission timing intervals (TTIs), e.g., in a frequency division duplex (FDD) system assigned thereto for the establishment of HSDPA channels. The control signal indicates a maximum allowed HSDPA transmit power for each of the timeslots and/or TTIs. The base station sends a feedback signal to the RNC indicating the results of measurements of the power of the transmitted HSDPA timeslots and/or TTIs during a predetermined time period.

Abstract: A method for transmitting and receiving data in a communication system. The method generates a frame for mapping each of multiple communication service modes of a base station providing the multiple communication service modes to a user terminal, in units of subframes each having a time interval and a frequency band. The method includes estimating a communication service mode supporting an optimal service among the multiple communication service modes provided by the base station supporting the multiple communication service modes, and sending to the base station a random access message for access to the base station over a shared channel.

Abstract: A reliable and deterministic video communication protocol is provided. In one aspect, a method of transmitting data, audio or video frames in a basic service set having a plurality of stations in a wireless local area network transmits a transmit opportunity information element to reserve a transmit opportunity time interval. The method further transmits the data, audio or video frames to a number of the stations in the basic service set during the reserved transmit opportunity time interval. In another aspect, a method of transmitting data, audio or video frames in a basic service set having a plurality of stations in a wireless local area network first transmits protection frames to reserve a time interval, then transmits frames during the reserved time interval or during a non-reserved time interval.

Abstract: An apparatus and method for efficiently updating location information of a mobile device in a wireless communication network, such as a cellular network, is disclosed. The mobile device sends a location message over an access channel. The wireless communication device continually transmits a location message at periodic intervals without regards to the status of the base station in communication with the wireless communication device. The base station determines a timeslot in which to receive a location message transmitted by the wireless communication device. If more than one wireless communication device is transmitting a location message, the base station prioritizes the order in which to receive the location message, opening the first available timeslot to the higher priority wireless communication device. A high priority device may be a wireless communication device used by emergency services personnel, such as firefighters or the police.

Abstract: A method for receiving an acknowledgement (ACK)/negative acknowledgement (NAK) signal in an orthogonal frequency division multiplexing (OFDM) communication system is described. The method includes receiving ACK/NAK signals and repetitions of the ACK/NAK signals mapped to one or more OFDM symbols which are allocated for transmission of a plurality of ACK/NAK signals within one sub-frame, and confirming receipt of the ACK/NAK signals. The OFDM symbol for each ACK/NAK signal is determined according to the repetition of the ACK/NAK signals, and frequency regions for the ACK/NAK signals within the OFDM symbols are different from frequency regions for the repetition of the ACK/NAK signals within the OFDM symbols.

Abstract: A base station apparatus includes a correction unit for correcting a CQI reported from a user apparatus and a scheduler for scheduling based on the corrected CQI. The correction unit uses a correction table to correct the CQI such that if the reported CQI is poor, the CQI is slightly reduced, and otherwise, the CQI is significantly reduced. One method of generating the correction table includes deriving a first SINR in consideration of the number of interference users less than (n?1) and a second SINR in consideration of the number of interference users equal to (n?1) to explore a distribution of the second SINR to the first SINR. In this method, correspondence between the first SINR and the second SINR is determined based on the distribution to generate the correction table.

Abstract: A method of transmitting a data block in a wireless communication system is disclosed. A method of transmitting a data block in a user equipment of a wireless communication system comprises receiving upper layer data through at least one upper layer channel, generating a data block including at least a part of the upper layer data, at least one channel indicator indicating each of the at least one upper layer channel, and information associated with quality of a service provided through the at least one upper layer channel established in the user equipment, and transferring the generated data block to a lower layer.

Abstract: A wireless base station sends transmission parameters that specify a control signal coding rate and a data signal coding rate which satisfy a BLER (Block Error Rate) required for a control signal and a data signal in a TTI (Transmit Time Interval) scheduled in response to a transmission request from a mobile station. In the specified TTI, the mobile station applies the coding rates, included in the transmission parameters and specified for the control signal and the data signal, to the control signal and the data signal, time-division multiplexes the coded control signal and coded data signal to generate constant transmission-power transmission data, and sends the generated transmission data to a wireless base station via PUSCH.

Abstract: In a wireless communication channel, the time per a service interval is distributed among multiple data services. The data services have been allocated airtime quotas in order to comply with their QoS requirements. These airtime quotas are scaled by a factor that is the ratio between, on the one hand, the time available per service interval for accommodating data of these services and, on the other hand, the total of the airtime quotas. This allows the services to use more airtime in case not the entire service interval has been allocated.

Abstract: The present invention provides a new and unique method and apparatus for communicating information between two nodes, points or terminals in a wireless local area network (WLAN), where a variable multicast and/or broadcast listening interval and associated signalling is allowed between the two nodes, points or terminals in the wireless LAN network. The two nodes, points or terminals include an access point (AP) or other suitable network node or terminal and a station (STA) or other suitable network node or terminal in the WLAN. The AP and the STA can indicate its capability to support a flexible multicast and broadcast listening interval by using new fields in Beacon and Probe Response frames and in (Re)Association Request Frames. The multicast and broadcast service is setup by using Multicast and Broadcast Service Setup signalling.

Abstract: A method and system facilitate inter-cell interference cancellation in a wireless network. An RNTI component manages a set of radio network temporary identifiers (RNTIs) for a plurality of user equipment (UE). The RNTI component determines whether the UEs will likely cause interference with a neighboring cell and/or experience interference from a neighboring cell, based on a respective attribute of the UEs. The RNTI component includes a space splitting component that divides the set of RNTIs into at least two subsets based on the determination, and allocates a first group of the UEs that are determined to likely cause interference and/or experience interference to a first subset of the divided RNTIs, such that the UEs in the first group are allocated a corresponding one of the RNTIs among the first subset of RNTIs. An implicit broadcast component can implicitly broadcast the first subset of RNTIs to facilitate cancellation of interference possibly caused by the first group of UEs.

Abstract: A method, system, and computer-readable media are provided for transmitting wireless data across a coaxial cable. In one aspect, a set of computer-readable media provides a method that includes receiving a request from a mobile device for data and transmitting the data across a coaxial cable to a cable modem. The method further includes sending the data to the mobile device through a base station, wherein the base station communicates with the cable modem in order to receive the data.

Abstract: A terminal device, used in communication system conducting communication by periodically switching frequency channels in a predefined sequence, communicates with a control device using a predefined channel.

Abstract: A method including: receiving, over a first wireless channel, a first beacon specifying a time interval during which a first wireless client is to communicate with a wireless access point according to an infrastructure network model; in response to receiving the first beacon, causing the first wireless client to exchange packets of data with the wireless base station over the first wireless channel for the time interval specified in the first beacon, and in response to expiration of the time interval specified in the first beacon, (i) causing the first wireless client to exchange packets of data with a second wireless client over a second wireless channel according to an ad hoc network model, or (ii) causing the first wireless client to enter a sleep state.

Abstract: The present invention discloses a method for code channel allocation and related multiuser detection in a wireless communication system. The method for code channel allocation includes: establishing a relation between at least one channel estimation window and a channelization code, wherein the at least one channel estimation window corresponding to the channelization code includes the channel estimation windows corresponding to all the spread spectrum code branches of a node in which the channelization code exists; and performing code channel allocation according to the relation established. In the method for code channel allocation of the invention, there exists a one-to-many relation between the channelization code/channelization code number established and the at least one channel estimation window. Therefore, during the multiuser detection, the channelization code/channelization code number determined via the at least one channel estimation window activated is unique.

Abstract: In an example embodiment described herein is an apparatus comprising a wireless transceiver and channel selection logic coupled to the wireless transceiver and operable to select an operating frequency for the wireless transceiver. The channel selection logic is configured to reserve a dedicated channel having a special identifier. The channel selection logic is configured to have the wireless transceiver advertise the dedicated service on a normal operating frequency. The channel selection logic is responsive to receiving a request from a wireless device via the wireless transceiver on the normal operating frequency to use the dedicated channel to switch to the dedicated channel and establish communications with the wireless device on the dedicated channel.

Abstract: A method for communications between neighboring wireless cells such as wireless regional area networks operating according to IEEE 802.22 specifications. The method involves scheduling inter-base station communications for over-the-air connections to allow neighboring base stations to communicate in environments where a single available channel is shared between the neighboring cells or where two or more channels used by two or more neighboring cells. In some embodiments, a bridge system, such as a bridge consumer premise equipment (CPE), positioned in an area of coverage overlap between two cells is used for inter-base station communications, and allocation and scheduling of bandwidth on the utilized channels is performed to provide interference free communications between the base stations. Existence announcements are provided in coexistence time slots and requests for bandwidth such as reserved and additional time slots are transmitted between the base stations using the coexistence time slots.

Abstract: A hybrid TDMA-CSMA MAC protocol is provided for allocating time slots within a frame having a structure in which transmission time is divided into a first number of actual TDMA time slots and a second number of “virtual” CSMA time slots. Each time a given node receives a Hello message, it can calculate variables based on an HSN field. A ratio of the first number to the second number can be dynamically adjusted depending upon the traffic conditions. When TDMA time slots within the frame are freed (e.g., no longer being used), slot position optimization techniques are provided for moving these freed TDMA time slots back into the CSMA portion of the frame and reallocating or moving other TDMA time slots into the portion of the frame that was previously occupied by the freed TDMA time slots to thereby maximize resource utilization.

Abstract: To provide a radio communication apparatus and a radio communication method in which change in the transmission rate is taken into consideration at the time of making transmission reservation. The present invention provides a radio communication apparatus for receiving the transmission reservation request with a radio transmitting/receiving unit and transmitting the reservation acknowledgement from the same radio transmitting/receiving unit. This radio communication apparatus is characterized in comprising a control unit for transmitting, from the radio transmitting/receiving unit, a plurality of reservation acknowledgments in different contents for a transmission reservation request in different timings.

Abstract: Methods and systems for reusing macro cell resources in femto cell base stations or relay stations in a non-collaborative manner are disclosed. In addition, orthogonal resource allocation between a macro cell base station and femto cell base stations/relay stations may be dynamically adjusted by considering user-population variance. Moreover, an additional level of spatial reuse by femto cell base stations or relay stations can be provided by employing macro cell user location information.

Abstract: A method and a device for reporting the number of correctly decoded transport blocks in a wireless system. The maximum number of correctly decoded transport blocks within a reporting period is determined. Then the actual number of correctly decoded transport blocks is determined and cultivated into an indication thereof on the basis of the maximum number. The indication is sent to a network element capable of decoding it for analysis.

Abstract: Technology is provided for a plurality of people that are waiting for a service/meeting with information relating to the queue. A registration unit is arranged to place people waiting for a service/meeting in a queue. At least one radio transmitter is arranged to transmit information relating to the queue to unidentified radio receivers so that the people may receive the information via the unidentified radio receivers.

Abstract: This invention is a method for extending the coverage and/or improving the capacity of wireless communication networks comprising inserting a Relay Node (RN) in the Radio Access Network (RAN). The relay node relays the signal between the Base Station node (eNB) and the User Equipment (UE). The relay node is wirelessly connected to the base station. The base station uses the same radio access technology (RAT) for the base station to user equipment link and the base station to relay node link. The relay node uses the same radio access technology for the base station to relay node link and the relay node to user equipment link. The relay node is non-transparent and seen as base station by the user equipment.

Abstract: When a source node (SN) seeks to transmit a first communication stream (FCS) to a destination node (DN), a method is provided for allowing the SN to preempt a lower priority communication stream (LPCS). User priorities are supported during slot scheduling based on stream-identifiers (IDs) and stream priority values exchanged by each of the nodes. A scout request message (SRM), which includes a stream ID and a user priority value of the SN, is transmitted to a next-hop node along a route towards the DN. A node along the route determines if free time slots are available along the route to meet QoS requirements of the FCS, and if not, the node determines whether there is a LPCS in the neighborhood, and if so, the node frees the particular time slots currently being used by the LPCS, and allocates the particular time slots for the FCS.

Abstract: A server device may receive a notification indicating that an event has occurred, where the notification specifies an area associated with the event. The server device may further send a request for network content in response to the notification; receive the network content for each of a group of user devices, where the network content includes a location for each of the group of user devices and incident information for each of the group of user devices; generate geo fence information based on the area associated with the event, the geo fence information including boundaries for a geo fence that surrounds the location of the event; generate state information, associated with the geo fence, for a user device, of the group of user devices, located within the boundaries for the geo fence, where the state information includes the location for the user device; and send, to another server device, the state information for the user device.

Abstract: A technique for providing a voice traffic indication in a communication network includes creating a request to set up a communication session in a first network element of the network, the request including a voice traffic indication. The request is then forwarded to a second network element which detects the voice traffic indication in the forwarded request. The second network element then sets up the communication session in response to the request taking into account that voice traffic is to be transferred. The communication channel may include a PDP context. The second network element may be one of an SGSN, a GGSN, or an RNC. The first network element may include an MS.

Abstract: A method for multiplexing reference signal (RS) transmissions from user equipments (UEs), with the RS having a bandwidth larger than the data signal bandwidth (distributed RS) is provided. A transmission time interval (TTI) comprises of one or more sub-frames and each sub-frame comprises of at least two RS transmission periods and a plurality of data signal transmission periods. A distributed RS is transmitted during at least one of the at least two RS transmission periods in at least one of the sub-frames comprising the TTI. During the remaining RS transmission periods, for a UE having a data signal transmission, the RS bandwidth is substantially the same as the data signal bandwidth (localized RS). The total system bandwidth is divided into contiguous, non-overlapping sub-bandwidths, called reference signal multiplexing blocks (RSMBs). Transmission of distributed RS occurs within an RSMB and does not cross over different RSMBs.

Abstract: In a wireless LAN system using an access point to perform access control for accesses from a plurality of client terminals, an access point and each of a plurality of client terminals have a transmission means using a data transmission carrier wave frequency and a control signal transmission carrier wave frequency; each of the plurality of client terminals has a memory storing priority information; when the data transmission carrier wave frequency is not sensed on the wireless LAN, data are transmitted to the access point at a relevant data transmission carrier wave frequency; when the data transmission carrier wave frequency is sensed on the wireless LAN, a band reservation request is sent to the access point at a relevant control signal transmission carrier wave frequency along with priority information stored in the memory; and after a transmission confirmation is received from the access point for the band reservation request, data is transmitted to the access point at a relevant data transmission carrier

Abstract: A disclosed transmitting device includes a random access channel generating unit configured to generate a random access channel including a preamble that includes at least a part of control information; and a transmission control unit configured to allocate a continuous frequency band or a discontinuous comb-like frequency band set to a user and to transmit the random access channel in a system that flexibly supports multiple bandwidths.

Abstract: Transmitting information using a preamble of a Random Access Channel (RACH) in an Evolved Universal mobile Telecommunications System (E-UMTS) is provided. A preamble transmission is used to inform a base station of specific information when a terminal uses a RACH and the base station efficiently allocates radio resources for data transmission to the terminal according to the specific information. Delay time before the terminal transmits data is reduced and unnecessary consumption of radio resources is minimized.