JP5404266B2 - Wireless communication apparatus and data processing method - Google Patents

Description

  The present invention relates to a wireless communication apparatus that functions as a home base station (Home NodeB: HNB).

  In the mobile communication system (UMTS: Universal Mobile Terrestrial System) standardized by 3GPP (3rd Generation Partnership Project), a radio interface protocol is applied to perform wireless transmission of user data arriving at various sizes and arrival intervals. (See Non-Patent Document 1, Non-Patent Document 2, and Non-Patent Document 3 below). The radio interface protocol divides and concatenates user data into an appropriate size, and copes with errors / erasures and sequence inversions in radio transmission to obtain radio transmission data.

  Radio interface protocols include, for example, PDCP (Packet Data Convergence Protocol), RLC (Radio Link Control), and MAC (Media Access Control), all of which are a terminal (UE: User Equipment) side and a network side (RAN: Radio Access). Network).

  PDCP is a protocol for performing header compression and lossless handover of various protocols, and terminates at a UE and a radio network controller (RNC). RLC is a protocol that performs data division / concatenation, retransmission control by ARQ (Automatic Repeat reQuest), encryption, integrity, etc., and terminates at UE and RNC.

  MAC is a protocol that performs radio transmission data multiplexing / transmission scheduling optimal for a radio transmission channel, selection of radio transmission channel according to the rate of radio transmission data, encryption, high-speed retransmission control by HARQ (Hybrid ARQ), etc. Terminate at UE, RNC and Base Transceiver Station (BTS). As MAC protocol processing on the RAN side, HATS, user multiplexing, and transmission scheduling are performed on wireless transmission data transmitted by the BTS through a high-speed wireless packet access (HSPA) channel, and other processing is performed by the RNC. Will do. Hereinafter, in order to distinguish the processing performed by the BTS and the processing performed by the RNC among the MAC protocol processing on the RAN side, the processing performed by the BTS is referred to as wireless MAC processing, and the MAC processing performed by the RNC is referred to as MAC processing.

  The RNC performs radio interface protocol processing (PDCP processing, RLC processing, MAC processing, etc.) on data (downlink data) from the network to the UE, and then to the BTS to which the destination UE of the data is connected. To transmit. At this time, the RNC applies a frame protocol for framing transmission data between RNC and BTS, which is a wired transmission section, to wireless transmission data, and sets a plurality of data and accompanying information as encapsulated data. The RNC transmits framed radio transmission data to the BTS at a data transmission interval (TTI: Transmission Time Interval) that matches the radio transmission channel selected by the BTS.

  When the BTS receives downlink data (framed wireless transmission data), the BTS extracts transmission data from the framed received data. When the HSPA channel is selected as the wireless transmission channel, the BTS performs wireless MAC processing on the transmission data, and further performs error correction, interleaving, spreading, and the like to the UE as downlink data. Wireless transmission. When receiving the downlink data from the BTS, the UE performs the reverse process of the process performed by the BTS and the RNC, restores the downlink user data, and passes it to the application.

  For data (uplink data) from the UE toward the network, the UE performs wireless protocol processing, wireless MAC processing, and wireless transmission processing, and wirelessly transmits the data to the BTS. When receiving the uplink data, the BTS performs despreading, deinterleaving, and error correction processing. If the HSPA channel is used for uplink data radio transmission, the BTS further performs radio MAC processing to restore radio transmission data and transmit it to the RNC. Similar to downlink data, when transmitting radio transmission data from the BTS to the RNC, a frame protocol is applied, and a transmission interval in which a plurality of radio transmission data and data encapsulating associated information is aligned with the TTI of the radio transmission channel. Sent by. When the RNC receives the framed radio transmission data from the BTS, the RNC retrieves the transmission data, performs radio interface protocol processing, restores the user data, and transfers it to the destination user.

  On the other hand, in 3GPP (3rd Generation Partnership Project), standardization of BTS (Base Transceiver Station) called home base station (HNB) is being promoted for the purpose of eliminating dead zones and providing additional services. For example, standardization of HNB functional configuration, HNB-accommodating RAN (Radio Access Network) architecture, network service, and the like is underway.

  HNB has a very small cell radius, and the number of simultaneous connection UEs (User Equipment) per cell is smaller than that of a normal BTS. On the other hand, since the wireless transmission capability of HNB is equivalent to the transmission capability of BTS that covers the outdoors, the advantage that the wireless transmission speed per UE is improved by exclusively using limited wireless resources in a limited space, UE. There is. However, since the area covered by one HNB is small, the number of installed HNBs is expected to be enormous compared to the conventional BTS, and the impact of increased load on the RAN or core network (CN) Is concerned.

  Therefore, in 3GPP, the RAN configuration for minimizing the influence of HNB on RAN or CN and the functional arrangement in HNB are examined, and the result is standardized as Non-Patent Document 4 below.

3GPP TS 25.201, “Physical layer-General description (Release 6)”, V6.2.0, 2005-06 3GPP TS 25.301, “Radio Interface Protocol Architecture (Release 6)”, V6.6.0, 2008-03 3GPP TS25.401, “UTRAN overall description (Release 6)”, V6.9.0, 2006-12 3GPP TS 25.467, “UTRAN architecture for 3G Home Node B (HNB); Stage 2 (Release 8)”, V8.2.0, 2009-6

  The HNB is installed in the user's home and used mainly by connecting to the home UE, so that the device is required to be small in size, low in power consumption, and low in price. However, according to the non-patent document 4, the HNB has functions of both the BTS and the RNC in the conventional mobile communication system (for example, as defined in the non-patent document 1 to the non-patent document 3). It is necessary to have. That is, the HNB needs to perform radio interface protocol processing on the RAN side in addition to each processing as the BTS. Therefore, the standard described in Non-Patent Document 4 has a problem that it is difficult to reduce the size, power consumption, and cost of the HNB device.

  The present invention has been made in view of the above, and is capable of realizing small size, low power consumption, and low price when performing RAN-side radio interface protocol processing in addition to each processing as a BTS. An object is to obtain a communication device and a data processing method.

In order to solve the above-described problems and achieve the object, the present invention is a wireless that receives wireless reception data from a wirelessly connected terminal and performs predetermined wireless transmission processing as a base station on the wireless reception data. A wireless communication apparatus comprising: a transmission processing unit; and a radio interface protocol processing unit that performs radio interface protocol processing as a radio network controller, wherein the radio transmission processing unit transmits data simultaneously using E-DCH. The number of terminals to be controlled is set to be equal to or less than a predetermined first limit number, and the number of terminals that simultaneously transmit data using RACH is controlled to be set to be equal to or less than a predetermined second limit number. Reception data storage means for storing the wireless reception data after processing, and the wireless interface protocol processing means The processing target when processing the radio reception data is the UL DCH data that is the radio reception data received on the UL DCH and the RACH that is the radio reception data received on the RACH for each processing slot that is a predetermined processing unit time. and one less of the data, as one less E-DCH data is the radio data received by the E-DCH, the upper limit of the processing amount of the UL DCH data in one processing slot The amount of data corresponding to the minimum transmission interval of UL DCH is set as the data amount corresponding to the minimum transmission interval of E-DCH, with the upper limit value of the processing amount of the E-DCH data in one processing slot as the first limit number. The amount multiplied by the upper limit value of the processing amount of the RACH data in one processing slot is multiplied by the data amount corresponding to the RACH minimum transmission interval. The minimum transmission interval data transmitted at the minimum transmission interval of each channel is selected as the processing target data of each processing slot so that the processing amount for each channel in each processing slot does not exceed the upper limit value for each channel. The wireless reception data transmitted at a transmission interval other than the minimum transmission interval is divided for each upper limit value of the processing amount of the channel through which the data is transmitted, and the divided data is processed for each channel in each processing slot. Processing target data selecting means for selecting the processing target of the processing slot so as not to exceed the upper limit value of the processing amount of the channel, the radio interface protocol processing means for each processing slot, the processing target data selection means Reads out the processing target data selected as the processing target of the processing slot from the received data storage means and processes it That, characterized in that.

  According to the present invention, the UL transport channel storage means for storing data after UL transport channel processing is provided, and the processing target of the radio interface protocol processing is equal to or less than one UE for each predetermined processing unit time. UL DCH corresponding to the data amount corresponding to the minimum TTI of the UE or RACH data of the UE equal to or smaller than the predetermined constraint number, and E-DCH data corresponding to the minimum TTI of the UE equal to or smaller than the predetermined constraint number, and the minimum When data other than TTI is received, the data is processed in a plurality of times. Therefore, when performing RAN side radio interface protocol processing in addition to each processing as a BTS, small size, low power consumption, There is an effect that a low price can be realized.

FIG. 1 is a diagram illustrating a functional configuration example of a wireless communication apparatus according to the present invention. FIG. 2 is a diagram illustrating wireless transmission data to be processed by the MAC process. FIG. 3 is a diagram illustrating another example of wireless transmission data to be processed by the MAC process. FIG. 4 is a diagram illustrating an example of DL MAC processing target data.

  Embodiments of a wireless communication apparatus according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a diagram illustrating a functional configuration example of a wireless communication apparatus according to the present invention. The radio communication apparatus according to the present embodiment is used as an HNB and performs radio communication with the UE, and at “3GPP TS25.467,“ UTRAN architecture for 3G Home Node B (HNB); Stage 2 (Release 8) ”. As prescribed, radio transmission processing as BTS and radio interface protocol processing (MAC processing, RLC processing, PDCP processing, etc.) on the RAN side as RNC are performed. FIG. 1 shows a functional unit that performs the wireless transmission processing and a functional unit that performs the wireless interface protocol processing.

  As shown in FIG. 1, the radio communication apparatus according to the present embodiment includes a radio physical layer unit 1, a RACH (Random Access CHannel) processing unit 2, a UL DCH (Dedicated CHannel) processing unit 3, and an E-DCH ( Enhanced Dedicated CHannel (Processing Unit) 4, HS-DSCH (High Speed Downlink Shared Channel) processing unit 5, DL DCH processing unit 6, PCH (Paging CHannel) / FACH (Forward Access CHannel) processing unit 7, and wireless MAC Processing unit 8, UL MAC processing unit (UL MAC) 9, UL RLC processing unit (UL RLC) 10, UL PDCP processing unit (UL PDCP) 11, DL MAC processing unit (DL MAC) 12, DL RLC processor (DL RLC) 13, DL PDCP processor (DL PDCP) 14, UL TrCH (Transport CHannel) memory 15, DL TrCH memo And a DL RLC SDU memory 17.

  The RACH processing unit 2, UL DCH processing unit 3, and E-DCH processing unit 4 receive the demodulated data from the radio physical layer unit 1 and perform error correction and radio transmission data separation. A channel processing unit is configured.

  The HS-DSCH processing unit 5, the DL DCH processing unit 6, and the PCH / FACH processing unit 7 perform multiplexing / error correction coding on the radio transmission data and transmit the modulation data to the radio physical layer unit 1. The DL transport channel processing unit is configured.

  UL MAC9, UL RLC10, and UL PDCP11 perform the radio interface protocol processing on the radio transmission data received from the UL transport channel processing unit, and restore the user data transmitted by the UE. Parts.

  DL MAC12, DL RLC13, and DL PDCP14 perform radio | wireless interface protocol processing with respect to the user data transmitted to UE as radio | wireless transmission data, and comprise DL radio | wireless interface protocol process part.

  The UL radio interface protocol processing unit and the DL radio interface protocol processing unit are processing units that perform processing as the RNC as described above, and include a radio physical layer unit 1, a radio MAC processing unit 8, and a UL transport channel processing unit. The DL transport channel processing unit is a processing unit that performs wireless transmission processing as a normal base station.

  The radio physical layer unit 1 performs radio transmission / reception with the UE. The wireless MAC processing unit 8 performs scheduling of UE and packet data that are transmitted and received through a high-speed packet access channel. The UL TrCH memory 15 is a memory (received data storage means) for storing radio transmission data (received data from the UE) output from the RACH processing unit 2, UL DCH processing unit 3 and E-DCH processing unit 4. The DL TrCH memory 16 is a memory (transmission data storage means) for accumulating radio transmission data (transmission data to the UE) after MAC processing output from the DL MAC processing 12. The DL RLC SDU memory 17 is a memory for accumulating data output from the DL PDCP 14.

  Next, the operation of the present embodiment will be described. First, UL reception processing that is processing when radio transmission data is received from the UE will be described. The radio physical layer unit 1 demodulates the data received from the UE and passes the demodulated data to the UL transport channel processing unit. Moreover, the delivery confirmation transmitted by the high-speed downlink packet access channel among the data demodulated from UE is passed to the wireless MAC processing unit 8.

  The processing of the UL transport channel processing unit differs in the TTI, the size of radio transmission data, and the multiplexing method for each transport channel type. Therefore, in this embodiment, the RACH transport channel, DCH transport channel, E- Corresponding to the three types of DCH transport channels, there are provided three types of processing units: RACH processing unit 2, UL DCH processing unit 3 and E-DCH processing unit 4. Therefore, the radio physical layer unit 1 uses the RACH processing unit 2 and the UL DCH for demodulating data received by the RACH transport channel, data received by the DCH transport channel, and data received by the E-DCH transport channel, respectively. The data is output to the processing unit 3 and the E-DCH processing unit 4.

  The RACH processing unit 2 performs error correction processing on the demodulated data received through the RACH transport channel, and then extracts an information data portion (wireless transmission data) and stores the extracted wireless transmission data in the UL TrCH memory 15. To do. The UL TrCH memory 15 is preliminarily divided into a RACH reception area, a UL DCH reception area, and an E-DCH reception area that are commonly used by all UEs, and the RACH processing unit 2 performs wireless transmission after restoration. Data is stored in the RACH reception area of the UL TrCH memory 15.

  The RACH is a common channel by random access in which a plurality of users transmit data while avoiding collision with each other. A radio physical channel for radio transmission of RACH is called PRACH (Physical Random Access CHannel), and can transmit data for one UE in TTI = 10 ms or 20 ms. Note that UE and HNB generally use a plurality of PRACHs so that a plurality of UEs can transmit data simultaneously, but only one PRACH is used between the communication apparatus of this embodiment and the UE. And

  The UL DCH processing unit 3 performs error correction processing on the demodulated data received through the DCH transport channel, and then extracts the radio transmission data and stores the extracted radio transmission data in the UL DCH reception area of the UL TrCH memory 15. To do. The DCH can be set from the UE to the HNB direction and from the HNB to the UE direction, respectively. In the present embodiment, the former is called UL DCH and the latter is called DL DCH. DCH is a dedicated channel set for each UE. Also, multiple DCHs can be set for the same UE.

  A radio physical channel that wirelessly transmits DCH is called DPCH (Dedicated Physical CHannel), and is set for each UE, and a plurality of DCHs set for the same UE are multiplexed to be any one of TTI = 10 ms, 20 ms, and 40 ms. To transmit. DPCH is set for the number of UEs, but the communication apparatus according to the present embodiment defines an upper limit of the number of UEs that can be connected. Here, for example, it is assumed that four DPCHs are set up to four at maximum.

  The E-DCH processing unit 4 extracts radio transmission data and scheduling information after performing error correction processing on the demodulated data received by the E-DCH transport channel. Then, the extracted wireless transmission data is stored in the E-DCH reception area of the UL TrCH memory 15 and scheduling information is notified to the wireless MAC processing unit 8.

  E-DCH is a dedicated channel set for each UE as in DCH. A plurality of MAC-d flows can be set for the same UE. However, in the present embodiment, as will be described later, the wireless MAC processing unit 8 performs control so that only one UE can transmit E-DCH data at the same time. Therefore, the E-DCH processing unit 4 may provide an E-DCH reception area in the UL TrCH memory 15 that can store E-DCH data of one UE at most together with the UE identifier.

  A radio physical channel that wirelessly transmits E-DCH is called E-DPCH (Enhanced Dedicated Physical CHannel), is set for each UE, and transmits one E-DCH data at TTI = 2 ms or 10 ms. Since E-DPCH is set for the number of UEs, in this embodiment, as described in the description of DPCH, an upper limit (here, 4) of UEs that can be connected is defined. Up to four are set.

  In E-DCH, a large amount of packet data is transmitted at a high speed, so that a large transmission power is generated during data transmission, and there is a problem in that interference between UEs increases and the data transmission rate decreases. Therefore, HNB controls the upper limit and transmission timing of the transmission power which can be used by each UE, and suppresses inter-UE interference.

  One method of this transmission power / transmission timing control is to set the transmission power of a certain UE to zero, assign unused transmission power to other UEs, and sequentially switch UEs with zero transmission power. There is a “Scheduling” method. This method is described in “3GPP TR25.896,“ Feasibility study for enhanced uplink for UTRA FDD ”, 2004-4”. According to this scheme, the number of UEs that can simultaneously transmit E-DCH data can be one. In the communication apparatus of the present embodiment, the wireless MAC processing unit 8 determines the UE transmission power range and transmission timing by the “Time and Rate Scheduling” method, and notifies the UE via the wireless physical layer unit 1.

  The UL MAC 9 reads the radio transmission data stored in the RACH processing unit 2, the UL DCH processing unit 3 and the E-DCH processing unit 4 from the UL TrC memory 15, performs MAC processing on the radio transmission data, and performs post-processing Output data to UL RLC10. For details of the MAC processing, refer to “3GPP TS25.321,“ Medium Access Control (MAC) protocol specification ”, 2009-6”.

  As described above, the wireless transmission data processed by the UL MAC 9 has a different data arrival interval for each channel depending on the characteristics of the wireless physical channel. In this embodiment, the UL TrCH memory 15 stores the transport channel after transport channel processing for each transport channel. By storing, MAC processing can be performed sequentially as follows.

  The order of wireless transmission data to be processed by the MAC process performed by the UL MAC 9 will be described below. FIG. 2 is a diagram illustrating wireless transmission data to be processed by the MAC process. The UL MAC 9 selects radio transmission data to be processed from the UL TrCH memory 15 every 2 ms, and performs MAC processing on the radio transmission data processing. 2 ms is defined as 1 slot, and 5 slots in a radio frame period of 10 ms are defined as a first processing slot to a fifth processing slot in order from the top.

  In each processing slot, at most 1 UE of DCH data (radio transmission data transmitted on the DCH transport channel) or RACH data (radio transmission data transmitted on the RACH transport channel) and at most 1 UE of E-DCH data (Radio transmission data transmitted on the E-DCH transport channel) is processed. For example, it is assumed that four UEs are connected to the communication apparatus according to the present embodiment, and the four connected UEs (referred to as first to fourth UEs) establish a DCH transport channel, and the TTI is 4 Assume that both UEs are 10 ms.

  In this case, the DCH data of the first UE in the first processing slot, the DCH data of the second UE in the second processing slot, the DCH data of the third UE in the third processing slot, In the fourth processing slot, the DCH data of the fourth UE is processed. Further, the fifth processing slot is a slot for processing the RACH, and when the unprocessed RACH data received up to the fifth processing slot remains, the unprocessed RACH data is stored in the fifth processing slot. Process. Further, when E-DCH data is received from any UE during these first to fifth processing slots, the E-DCH data received in the processing slot that received the data is processed. In the first to fourth processing slots that receive E-DCH data, DCH data processing and E-DCH data processing are performed.

  On the other hand, as described above, TTI can use three of 10, 20, and 40 ms for UL DCH, two of 10 ms and 20 ms for RACH, and two of 2 ms and 10 ms for E-DCH. In the same transport channel, as the TTI increases, the amount of data received at one time increases. For example, in UL DCH, data transmitted at TTI = 20 ms is twice the size of data transmitted at TTI = 10 ms. Therefore, in the present embodiment, in order to smooth the processing, when the UL MAC 9 reads out the radio transmission data to be processed from the UL TrCH memory 15, only the data corresponding to TTI = 10 ms is obtained in the DCH and RACH. -In DCH, only data corresponding to TTI = 2 ms is processed in the received processing slot. Unprocessed TTI data is processed not only in the received processing slot but also in other processing slots.

  For example, in FIG. 2, the first to third UEs establish DCH, and the first and third UEs transmit DTI data with TTI = 10 ms, and the second UEs transmit DCH data with TTI = 20 ms. In addition, an example is shown in which E-DCH data is transmitted from the fourth UE in TTI = 10 ms.

  In the processing slot 21, which is the first processing slot, the DCH data # 0 of the first UE and the E-DCH data # 0 of the first UE are processed. In the processing slot 22, which is the second slot, DCH data # 1 of the second UE and E-DCH data # 0 of the first UE are processed. In the processing slot 23 which is the third slot, the DCH data # 2 of the third UE is processed. In the processing slot 28 which is the third slot, the DCH data # 2 of the third UE and the E-DCH data # 3 of the fourth UE are processed. At this time, since the size of DCH data # 1 of the second UE is twice the size of TTI = 10 ms, processing is performed using two processing slots, and half of DCH data # 1 is processed. Processing is performed in the slot 22, and the remaining half is processed in the processing slot 27 which is the second processing slot of the next radio frame period.

  In addition, since the E-DCH data is not received in the processing slot 23, the processing slot 26, and the processing slot 27, the DCH data # 2 of the third UE, the DCH data # 0 of the first UE, and the second Only the UE's DCH data # 1 (half) is processed. Further, in the processing slot 24 and the processing slot 29, only the E-DCH processing is performed because the fourth UE has not established the DCH.

  Further, the E-DCH of the fourth UE has a TTI of 10 ms and the data size is larger than the data size when the TTI is 2 ms. Therefore, here, an example is shown in which a data size with a TTI of 10 ms is processed twice. Thus, processing slot 28 processes half the amount of E-DCH # 3 received from the fourth UE, and processing slot 29 processes the other half of E-DCH # 3 received from the fourth UE. .

  Further, in the processing slot 25 and the processing slot 30 which are the fifth processing slots, when there is unprocessed RACH data in the UL TrCH memory 15 up to that point, the RACH data is processed. In the example of FIG. 2, since E-DCH # 1 is received in the processing slot 25, both RACH data processing and R-DCH # 1 processing are performed.

  FIG. 3 is a diagram illustrating another example of wireless transmission data to be processed by the MAC process. FIG. 3 shows a case where the DCH TTI of the second UE is 40 ms and the RACH TTI is 20 ms. The data transmitted by the 40 ms TTI transmitted from the second UE is divided into about 1/4, and about 1 in the second processing slot which is the processing slot of the second UE over four radio frame periods. Each data divided into / 4 is processed. In the fifth processing slot, which is the RACH processing slot, data divided approximately in half is processed over two radio frame periods.

  As described above, the radio frame period of 10 ms is divided into slots each having 2 ms, which is the minimum TTI of E-DCH, and a slot for processing DCH is determined for each UE, and a slot for processing RACH is determined. Keep it. The DCH data is processed in the processing slot corresponding to each UE, and the E-DCH data is processed in the received processing slot. Also, data transmitted with a TTI other than the minimum TTI value is divided into a plurality of pieces and processed using a plurality of processing slots.

  Next, the UL RLC 10 performs RLC (Radio Link Control) processing on the wireless transmission data after the MAC processing output from the UL MAC 9. For details of RLC processing, refer to “3GPP TS25.322,“ Radio Link Control (RLC) protocol specification ”, 2009-6”.

  The UL RLC 10 of this embodiment performs RLC processing every 2 ms, which is the same as the length of the processing slot of the UL MAC 9. The UL RLC 10 performs processing for data corresponding to the minimum TTI of at most 1 UE output by the UL MAC 9 every 2 ms (processing for data having a data size transmitted with the minimum TTI) or processing for RACH data, and minimum for 1 UE at most. Data processing corresponding to the TTI is performed, and the processing result is output to the UL PDCP 11.

  The UL PDCP 11 performs PDCP processing on radio transmission data after RLC processing output from the UL RLC 10. For details of the PDCP processing, refer to “3GPP TS25.323,“ Packet Data Convergence Protocol (PDCP) specification ”, 2009-6”.

  The UL PDCP 11 also performs PDCP processing every 2 ms, similarly to the UL MAC 9 and UL RLC 10. The UL PDCP 11 performs processing corresponding to the minimum TTI of 1 UE at most (processing for data having a data size transmitted at the minimum TTI) or processing of data for RACH data output by the UL RLC 10 every 2 ms, and minimum of 1 UE. And processing of data corresponding to the TTI. Note that PDCP is not applied to all wireless transmission data, and the processing of UL PDCP 11 is not performed for wireless transmission data that is not applied.

  In the UL PDCP 11, the data after PDCP processing is processed into a subsequent RRC signaling message, user data, and broadcast data, and is delivered to each subsequent unit (not shown). For example, in the HNB, in order to process the RRC signaling message in the own device, it is delivered to an RRC processing unit (not shown) in the own device. For example, when the user data is an IP (Internet Protocol) packet addressed to another device on the local area network, the IP packet is transmitted to the local network.

  Next, a DL transmission process that is a process when transmitting radio transmission data to the UE will be described. As described above, the DL transport channel processing unit according to the present embodiment includes the HS-DSCH processing unit 5, the DL DCH processing unit 6, and the PCH / FACH processing unit 7. Since the size and multiplexing method of TTI and radio transmission data differ for each transport channel type, the DL transport channel processing unit is provided with a processing unit for each transport channel as well as the UL transport processing unit. The radio communication apparatus according to the present embodiment includes a BCH (Broadcast CHannel) transport channel processing unit that periodically transmits cell broadcast information, similar to general HNB, but radio interface protocol processing is not required for BCH. Therefore, the description of the BCH processing is omitted.

  The radio physical layer unit 1 wirelessly transmits control information such as transmission power, E-DCH HARQ delivery confirmation, and user scheduling information in HS-DSCH, in addition to the radio transmission data received from the DL transport channel processing unit. Control information other than the wireless transmission data received by the DL transport channel processing unit is generated and processed by the wireless MAC processing unit 8 and passed to the wireless physical layer unit 1.

  The HS-DSCH processing unit 5 reads out wireless transmission data to be transmitted through the HS-DSCH transport channel from the DL TrCH memory 16, performs multiplexing / error correction coding processing on the read data, and performs post-processing data Is output to the radio physical layer unit 1. The data stored in the DL TrCH memory 16 will be described later. The data output from the HS-DSCH processing unit 5 is data obtained by multiplexing data of a plurality of UEs. In addition, as data to be transmitted to the same UE, different types of data such as RRC (Radio Resource Control) protocol message for performing radio resource control of the UE, user data such as a packet, and the like may be multiplexed. Further, in HS-PDSCH (High Speed Physical Downlink Shared CHannel), which is a radio physical channel that wirelessly transmits HS-DSCH, since HARQ is applied, data may be retransmitted.

  At this time, the wireless MAC processing unit 8 determines which data is retransmitted or newly transmitted and which data of which UE is multiplexed and transmitted (scheduling of transmission data) when newly transmitting. The wireless MAC processing unit 8 determines the necessity of retransmission based on the HS-DSCH delivery confirmation information received from the wireless physical layer unit 1, and retransmits to the HS-DSCH processing unit 5 when retransmission is necessary. Instruct. Further, when the new data can be transmitted, the wireless MAC processing unit 8 determines the UE to be newly transmitted and the data amount for each UE. Various methods have been proposed for determining a UE and a data amount for each UE when newly transmitting data. For example, in this embodiment, Land Robin Robin (RRS: Round Robin Scheduling) that is easy to implement Is adopted. RRS is a method of equally giving a transmission opportunity to UEs that have set up HS-DSCH channels, and switches UEs that give a transmission opportunity at regular intervals.

  Note that HS-DSCH has TTI = 2 ms, and in general, the HNB sets a plurality of channels so that a plurality of multiplexed data can be transmitted simultaneously. However, like the PRACH, only one is used in this embodiment. It will be set. In addition, the number of UEs that can simultaneously transmit HS-DSCH data is set to one as in the case of E-DCH.

  The DL DCH processing unit 6 reads data to be transmitted on the DL DCH from the DL TrCH memory 16, performs processing on the read data, such as error correction processing, on the DCH data, and transmits the processed data to the radio physical layer unit 1. Output to.

  The PCH / FACH processing unit 7 reads out wireless transmission data to be transmitted on the PCH and FACH transport channels from the DL TrCH memory 16, performs multiplexing / error correction coding on the read data, and outputs the data to the wireless physical layer unit 1. . The PCH is a channel for calling a UE, and data transmitted on this channel includes an identifier of the called UE. The FACH is a channel for transmitting cell broadcast information when the cell broadcast information periodically transmitted by the HNB is changed, a broadcast channel with which a plurality of UEs are contracted, a signaling message / user data to an individual UE, and the like. It is.

  A radio physical channel for transmitting PCH / FACH data is called S-CCPCH (Secondary Common Control Physical Channel), and three TTIs of 10 ms, 20 ms, and 40 ms can be set. In S-CCPCH, UE-specific signaling messages or user data can be transmitted to only one UE at a time. In the S-CCPCH, a plurality of settings can be made in the same manner as the RACH so that data can be transmitted to a plurality of UEs simultaneously. In the present embodiment, it is assumed that one S-CCPCH is used without setting a plurality of S-CCPCHs for the sake of simplicity of explanation.

  Next, processing of the DL radio interface protocol processing unit will be described. The DL PDCP 14 receives transmission data such as DL user data and a DL signaling message from an application processing unit (not shown), etc., performs PDCP processing on the transmission data, and stores it in the DL RLC SDU memory 17. The DL RLC SDU memory 17 is configured such that stored data can be retrieved for each data flow, such as dividing an area for each data flow such as user application packet data, RRC signaling messages, and the like. The DL PDCP 14 does not perform the process in 2 ms unlike the UL PDCP 11, but performs the PDCP process each time transmission data is received, and stores the processed data in the DL RLC SDU memory 17. Note that PDCP is not applied to all wireless transmission data, and the processing of DL PDCP 14 is not performed on wireless transmission data that is not applied.

  The DL MAC 12 determines the MAC processing target data and the data amount based on the transmission data scheduling result performed by the wireless MAC processing unit 8, and requests input data from the DL RLC 13 based on the determination result. A method for selecting the MAC processing target data at this time will be described later.

  Based on the request from the DL MAC 12, the DL RLC 13 determines whether transmission of control PDU (Protocol Data Unit) in RLC, ARQ retransmission necessity, and transmission of new data (data PDU) for data or UE corresponding to the request. When the determination result indicates that transmission is possible, a control PDU, retransmission data PDU, and new data PDU that satisfy the requested data amount are generated.

  Specifically, the DL RLC 13 corresponds to the requested data or UE stored in the DL RLC SDU memory 17 in the case of generating a new data PDU, for example, for the data or UE requested from the DL MAC 12. Data is read from the data flow area, and the read data is processed into RLC data PDU (however, data is not processed in the RLC transmission mode). The DL RLC 13 holds the generated RLC data PDU in its own internal memory when generating new data PDU. When retransmission data is transmitted, the held RLC data PDU is passed to the DL MAC 12. In addition, when the RLC state is reset due to reception confirmation from the UE, the RLC state is reset due to excessive retransmissions, etc., the DL RLC 13 discards the held RLC data PDU. Refer to the above-mentioned 3GPP TS25.322 document for details of these RLC processes.

  The DL MAC 12 determines processing target data (including the data amount) as follows. First, similarly to the UL MAC 9, a processing slot of 2 ms is defined on the basis of a radio frame period of 10 ms. In each processing slot, DCH or PCH (Paging Channel) / FACH (Forward Access Channel) data for at most 1 UE and HS-DSCH (High Speed Downlink Shared Channel) data for at most 1 UE are processed.

  FIG. 4 is a diagram illustrating an example of processing target data of the DL MAC 12. In FIG. 4, for example, it is assumed that four UEs (first to fourth UEs) are connected to the radio communication apparatus according to the present embodiment. Then, it is assumed that the first UE establishes DL DCH and HS-DSCH, the second and third UEs establish DL DCH, and the fourth UE establishes HS-DSCH with the wireless communication apparatus.

  In the example illustrated in FIG. 4, in the processing slot 41 and the processing slot 46 that are the first processing slots, the DCH # 0 that is the DL DCH data of the first UE is a processing target, and is the second processing slot. In the processing slot 42 and the processing slot 47, the DCH # 1 that is the DL DCH data of the second UE is to be processed, and in the processing slot 43 and the processing slot 48 that are the third processing slots, the DL DCH of the third UE Data DCH # 2 is a processing target.

  Further, in the processing slot 45 and the processing slot 50 which are the fifth processing slot, PCH or FACH is received by the processing slot, and when unprocessed PCH or FACH data remains, the PCH or FACH data is received. It becomes a processing target. Also, HS-DSC # 0, which is HD-DSCH data of the first UE, and HS-DSC # 3, which is HD-DSCH data of the fourth UE, are alternately processed for each processing slot. Thus, the data transmission opportunities are equally given to both UEs.

  Four TTIs of 10 ms, 20 ms, 40 ms, and 80 ms can be set for DL DCH, and three TTIs of 10 ms, 20 ms, and 40 ms can be set for PCH / FACH, respectively. In the same transport channel, the amount of data transmitted at a time increases as the TTI increases. Therefore, like the UL MAC 9, the DL MAC 12 sets the data amount of various transport channels to be processed for MAC processing in a single processing slot as the data amount corresponding to the minimum TTI, that is, the data amount of TTI = 10 ms. Data transmitted using TTIs other than those are processed in a plurality of processing slots.

  For example, FIG. 4 shows a case where the TTI of the DL DCH of the second UE is 20 ms, where half the amount of DCH # 1 data is processed in the processing slot 42 and the remaining half amount of DCH is processed in the processing slot 47. # 1 data is being processed. Also, here, the DCH data of the first UE is processed in the first processing slot, the DCH data of the second UE is processed in the second processing slot, and the third UE's DCH data is processed in the third processing slot. The DCH data is to be processed. Similarly to the case of UL, processing is also performed for data transmitted using other DTIs other than DL DCH and PCH / FACH (other than the minimum TTI).

  DL MAC12 determines the data amount requested | required of DL RLC13 with respect to the process target UE selected as mentioned above as follows. The wireless MAC processing unit 8 calculates the MAC transmission rate in consideration of the HS-DSCH data retention amount and the wireless quality in the DL TrCH memory 16 corresponding to each UE, and associates the calculated transmission rate with the UE to the DL MAC 12 To notify. Further, the DL MAC 12 performs flow control to notify the wireless MAC processing unit 8 to increase the MAC transmission rate when data stays in the DL RLC SDU memory 17 and the data is increased or discarded. The DL MAC 12 obtains the data amount to be processed for each processing slot based on the notified transmission rate.

  The DL MAC 12 obtains the data amount corresponding to the UE notified from the wireless MAC processing unit 8 in this way, and requests the data amount from the DL RLC 13 as input data. Also, the DL MAC 12 performs MAC processing on the data input from the DL RCL 13 and stores the processed data in the DL TrCH memory 16. In a transport channel other than the minimum TTI, a part of the radio transmission data is accumulated every 10 ms. When a time corresponding to the TTI elapses, all data to be transmitted at once in the TTI (all radio transmission data) ) Will be available. Note that each unit of the DL transport processing unit reads data corresponding to each channel from the DL TrCH memory 16, so that the data of each channel can be read for each channel, for example, stored for each data type. . Each unit of the DL transport processing unit reads the data of the corresponding channel from the DL TrCH memory 16 for each TTI, and performs the above processing.

  In this embodiment, the UL MAC 9 selects the processing target data for the UL. However, the present invention is not limited to this, and processing target data selecting means for selecting the UL processing target data is separately provided, and the processing target data is selected. The selection unit may select data to be processed, and the UL MAC 9 may perform MAC processing based on the result. Similarly, in the present embodiment, for DL, DL MAC 12 selects processing target data using the scheduling result of wireless MAC processing unit 8, but DL processing target data selection means is provided separately, The processing target data selecting means may perform processing of processing target data performed by the wireless MAC processing unit 8 and the DL MAC 12.

  In this embodiment, the radio frame period is set to 10 ms and the processing slot is set to 2 ms. However, the radio frame period and the processing slot are not limited to this, and the process is smoothed, and is appropriate according to the TTI for each channel. If a value is set, other values may be used. However, a processing slot is assigned to each connected UE within the radio frame period.

  In this embodiment, the processing slot at the same position in the radio frame period is set as the DCH processing slot of the same UE. However, the processing amount of each processing slot is smoothed within the data amount corresponding to the minimum TTI. Any other method may be used as long as it is a method of assigning to be converted. For example, when a DCH is transmitted with a TTI of 20 ms, the DCH is not established instead of processing the data in half the amount of data and then processing in the processing slot at the same position in the period of the next radio frame. When there is a UE, the process may be performed in a processing slot corresponding to the UE. That is, the processing amount of one processing slot is equal to or less than the sum of the processing amount for the data amount corresponding to the minimum TTI of DCH and the processing amount for the data amount corresponding to the minimum TTI of E-DCH (or HS-DSCH). As long as smoothing is performed and the processing target data is selected, any selection method may be used.

  In the present embodiment, there is a restriction that the number of UEs, PRACHs, S-CCPCHs, and HD-PDSCHs that can be simultaneously connected to the wireless communication apparatus is set to 1, but these numbers are 2 or more. Again, the principles of the present invention are applicable as well. For example, when the number of HS-DSCH corresponding to the HS-DSCH having a TTI of 2 ms is 4, each processing slot is four times as long as the number of HS-DSCH is 1 for HS-DSCH data. Data may be processed. Accordingly, the maximum number of UEs, PRACHs, S-CCPCHs, and HD-PDSCHs that can be connected simultaneously is calculated in reverse from the processing capability, and the number of UEs, PRACHs, -The number of CCPCH and the number of HD-PDSCH may be constrained. For RACH, PCH / FACH, and DCH with a TTI greater than 10 ms, all radio interface protocol processing is completed during the minimum TTI of each transport channel, and the processing data amount in each processing slot is as much as possible. In this way, processing slots may be allocated.

  Moreover, in this Embodiment, although the radio | wireless MAC process part 8 has determined the transmission data of HS-DSCH based on RRS, when the radio | wireless MAC process part 8 performs advanced scheduling other than RRS, The wireless MAC processing unit 8 may notify the DL MAC 12 of the UE to be transmitted next and the transmission data amount, or the wireless MAC processing unit 8 may change the frequency of the UE to be processed by the DL MAC 12 to DL. You may make it notify to MAC12.

  Further, in the case of a system in which the number of connected UEs increases instead of increasing the number of UEs that can be connected simultaneously and the maximum rate of E-DCH decreases, the wireless MAC processing for E-DCH is performed in the same manner as HS-DSCH. The flow control may be performed between the unit 8 and the UL MAC 9, and the transmission power allocated to each UE by the wireless MAC processing unit 8 may be adjusted to reduce the amount of data transmitted by the UE.

  As described above, in the present embodiment, the UL TrCH memory 15 is provided between the UL transport channel processing unit and the UL MAC 9, and wireless transmission for each channel output from the UL transport channel processing unit to the UL TrCH memory 15 is performed. The data is accumulated, and the UL MAC 9 has UL DCH or RACH data corresponding to a data amount corresponding to the minimum TTI of at most a predetermined 1 UE every 2 ms, and UEs having a predetermined number of restrictions (the number of restrictions is 1 in the above example). ) E-DCH data having a data amount corresponding to the minimum TTI of (2). Therefore, it is possible to smooth the data of the radio interface protocol processing target after UL MAC9, and when performing the radio interface protocol processing on the RAN side in addition to each processing as the BTS, the maximum simultaneous reception data generated instantaneously It is possible to apply a low-priced and low-spec device compared to a conventional apparatus configuration that takes quantity into consideration. In addition, the circuit scale can be reduced by using the radio interface protocol processing unit in a time-sharing manner as described above.

  Further, in the present embodiment, a DL TrCH memory 16 is provided between the DL transport channel processing unit and the DL MAC 12, and the DL MAC 12 stores the processed data in the DL TrCH memory 16, and the DL MAC 12 and the DL RLC 13 are Every 2 ms, DL DCH or PCH / FACH data corresponding to a data amount corresponding to the minimum TTI of 1 UE at most, and HS-DSCH data corresponding to a data amount corresponding to the minimum TTI of 1 UE at most are processed, except for the minimum TTI. The data was processed in multiple times. Therefore, the data of DL MAC 12 and DL RLC 13 can be smoothed, and the maximum simultaneous reception data amount that occurs instantaneously is taken into account when performing radio interface protocol processing on the RAN side in addition to each processing as BTS A device with a lower price and lower specifications than the conventional apparatus configuration can be applied. In addition, the circuit scale can be reduced by using the radio interface protocol processing unit in a time-sharing manner as described above.

  As described above, the wireless communication device and the data processing method according to the present invention are useful for a wireless communication device that functions as a home base station, and in particular, a home base that requires small size, low power consumption, and low price. Suitable for stations.

DESCRIPTION OF SYMBOLS 1 Radio | wireless physical layer part 2 RACH process part 3 UL DCH process part 4 E-DCH process part 5 HS-DSCH process part 6 DL DCH process part 7 PCH / FACH process part 8 Wireless MAC process part 9 UL MAC
10 UL RLC
11 UL PDCP
12 DL MAC
13 DL RLC
14 DL PDCP
15 UL TrCH memory 16 DL TrCH memory 17 DL RLC SDU memory

Claims (10)

Wireless transmission processing means for receiving wireless reception data from a terminal to be wirelessly connected and performing predetermined wireless transmission processing as a base station on the wireless reception data, and wireless performing wireless interface protocol processing as a wireless network controller An interface protocol processing means, comprising:
The wireless transmission processing means sets the number of terminals that transmit data simultaneously using E-DCH to a predetermined first limit number or less and sets the number of terminals that transmit data simultaneously using RACH to a predetermined number. Control to be less than the limit of 2,
Received data storage means for storing the wireless reception data after processing by the wireless transmission processing means;
The processing target when the radio interface protocol processing means processes the radio reception data is received by UL DCH data and RACH which are the radio reception data received by UL DCH for each processing slot which is a predetermined processing unit time. One or less of the received RACH data as the radio reception data and one or less E-DCH data as the radio reception data received by E-DCH, and the UL DCH in one processing slot The upper limit value of the data processing amount is the data amount corresponding to the UL DCH minimum transmission interval, and the upper limit value of the processing amount of the E-DCH data in one processing slot is the first limit number. An amount obtained by multiplying the amount of data corresponding to the transmission interval is multiplied by the upper limit value of the processing amount of the RACH data in one processing slot to the second limit number. The minimum transmission interval transmitted at the minimum transmission interval of each channel so that the processing amount for each channel in each processing slot does not exceed the upper limit value for each channel, by multiplying the amount of data corresponding to the minimum transmission interval of CH Data is selected as processing target data for each processing slot, and the wireless reception data transmitted at a transmission interval other than the minimum transmission interval is divided for each upper limit value of the processing amount of the channel through which the data is transmitted. Processing target data selection means for selecting the processed data as a processing target of the processing slot so that the processing amount for each channel in each processing slot does not exceed the upper limit value of the processing amount of the channel;
With
The wireless interface protocol processing means reads out the processing target data selected as the processing target of the processing slot by the processing target data selection means from the received data storage means for each processing slot, and processes it.
A wireless communication apparatus. The wireless transmission processing means performs control using a “Time and Rate Scheduling” method so that the number of terminals that transmit data simultaneously using E-DCH is equal to or less than the first limit number.
The wireless communication apparatus according to claim 1. The number of terminals to be wirelessly connected is equal to or less than a predetermined number of connected terminals,
The number of processing slots obtained by adding 1 to the number of connected terminals is defined as a radio frame period,
The processing target data selecting means allocates one processing slot in the frame to the terminal every radio frame period, and selects UL DCH data of the terminal to which the processing slot is allocated as processing target data of the processing slot. And selecting RACH data as a processing target of a processing slot not assigned to the terminal,
The wireless communication apparatus according to claim 1, wherein the wireless communication apparatus is a wireless communication apparatus.   The wireless communication apparatus according to claim 1, 2, or 3, wherein the processing slot is set to a minimum transmission interval of E-DCH. Wireless transmission processing means for transmitting wireless transmission data to a wirelessly connected terminal and performing predetermined wireless transmission processing as a base station on the wireless transmission data, and wireless performing wireless interface protocol processing as a wireless network controller An interface protocol processing means, comprising:
The radio transmission processing means, the number of the terminal which is less than the first limit the number of predetermined said terminal to receive data simultaneously using the HS-DSCH, to receive data simultaneously using the PCH or FACH Transmitting wireless transmission data to the terminal so as to be equal to or less than a predetermined second limit number;
Transmission data storage means for storing wireless transmission data processed by the wireless interface protocol processing means;
The processing target when the radio interface protocol processing means for processing the radio transmission data, for each processing slot is a predetermined unit processing time, in DL DCH data and PCH or FACH is a wireless transmission data to be transmitted in DL DCH and one below of the PCHFACH data is a wireless transmission data to be transmitted, and with at most one HS-DSCH data is a wireless transmission data to be transmitted by the HS-DSCH, also the DL DCH data in one processing slot The upper limit value of the processing amount is the data amount corresponding to the DL DCH minimum transmission interval, and the upper limit value of the processing amount of the HS-DSCH data in one processing slot is the first limit number, and the minimum transmission of the HS-DSCH The amount of data corresponding to the interval is multiplied by the amount of processing of the PCHFACH data in one processing slot. The limit value is obtained by multiplying the second limit number by the data amount corresponding to the minimum transmission interval of PCH and FACH, and the processing amount for each channel in each processing slot does not exceed the upper limit value of the processing amount for each channel. As described above, the minimum transmission interval transmission data to be transmitted at the minimum transmission interval of each channel is selected as the processing target data of each processing slot, and the radio transmission data to be transmitted at a transmission interval other than the minimum transmission interval is the channel for transmitting the data. The transmission division data is divided into the upper limit values of the processing amount corresponding to each of the processing slots so that the processing amount for each channel in each processing slot does not exceed the upper limit value of the processing amount of the channel. A transmission processing target data selection means for selecting as a processing target;
With
The radio interface protocol processing means processes the processing target data selected as the processing target of the processing slot by the transmission processing target data selecting means for each transmission processing slot, and processes the minimum transmission interval transmission data and the transmission Store the divided data in the transmission data storage means,
The wireless transmission processing means reads the minimum transmission interval transmission data and the transmission division data from the transmission data storage means, performs wireless transmission processing on the minimum transmission interval transmission data, and also from the same wireless transmission data By combining all the divided transmission transmission data, the data after the wireless interface protocol processing corresponding to the wireless transmission data before the division, and performing a wireless transmission process on the combined data,
A wireless communication apparatus. The number of terminals to be wirelessly connected is equal to or less than a predetermined number of connected terminals,
A number of transmission processing slots obtained by adding 1 to the number of connected terminals is defined as a radio frame period,
The transmission processing target data selection means assigns one transmission processing slot in the frame to the terminal every radio frame period, and DL of the terminal to which the transmission processing slot is assigned as processing target data of the transmission processing slot Selecting DCH data and selecting PCHFACH data as a processing target of a transmission processing slot not assigned to the terminal;
The wireless communication apparatus according to claim 5. The transmission processing slot is the minimum transmission interval of HS-DSCH.
The wireless communication apparatus according to claim 5, wherein the wireless communication apparatus is a wireless communication apparatus. Send wireless transmission data to the terminal to connect wirelessly,
The wireless transmission processing means performs predetermined wireless transmission processing as a base station on the wireless transmission data, and sets the number of the terminals that simultaneously receive data using HS-DSCH to a predetermined third and smaller than the limit number, and it transmits the wireless transmission data to the terminal to be less than the fourth limit the number of predetermined said terminal receiving data simultaneously using the PCH or FACH,
Transmission data storage means for storing wireless transmission data processed by the wireless interface protocol processing means;
The processing target when the wireless interface protocol processing processes wireless transmission data is D L DCH data that is wireless transmission data transmitted by DL DCH and PCH or FACH for each transmission processing slot that is a predetermined processing unit time. and one below of the PCHFACH data is a wireless transmission data to be transmitted, and with at most one HS-DSCH data is a wireless transmission data to be transmitted by the HS-DSCH, also the DL DCH in one sending process slot The upper limit value of the data processing amount is a data amount corresponding to the minimum transmission interval of DL DCH, and the upper limit value of the processing amount of the HS-DSCH data in one transmission processing slot is set to the third limit number. The amount of data corresponding to the minimum transmission interval is multiplied by the amount of the PCHFACH data in one transmission processing slot. The upper limit value of the logical amount is obtained by multiplying the fourth limit number by the data amount corresponding to the minimum transmission interval of PCH and FACH, and the processing amount for each channel in each transmission processing slot is the upper limit of the processing amount for each channel. In order not to exceed the value, the minimum transmission interval transmission data to be transmitted at the minimum transmission interval of each channel is selected as the processing target data of each transmission processing slot, and the radio transmission data to be transmitted at a transmission interval other than the minimum transmission interval is selected. The transmission divided data is divided into the upper limit values of the processing amount corresponding to the channels for transmitting the data, and the transmission divided data is set so that the processing amount for each channel in each transmission processing slot is the upper limit value of the processing amount of the channel. Transmission processing target data selection means for selecting the processing target of the transmission processing slot so as not to exceed,
With
The wireless interface protocol processing means processes, for each transmission processing slot, the processing target data selected by the transmission processing target data selection means as the processing target of the transmission processing slot, and the processed minimum transmission interval transmission data and the processed data Storing the transmission division data in the transmission data storage means;
The wireless transmission processing means reads the minimum transmission interval transmission data and the transmission division data from the transmission data storage means, performs wireless transmission processing on the minimum transmission interval transmission data, and also transmits the same wireless transmission data. By combining all the divided transmission data, the data after the wireless interface protocol processing corresponding to the wireless transmission data before the division, and performing a wireless transmission process on the combined data,
The wireless communication device according to claim 1, wherein the wireless communication device is a wireless communication device. Wireless transmission processing means for receiving wireless reception data from a terminal to be wirelessly connected and performing predetermined wireless transmission processing as a base station on the wireless reception data, and wireless performing wireless interface protocol processing as a wireless network controller A data processing method in a wireless communication device comprising an interface protocol processing means,
The number of terminals transmitting data simultaneously using E-DCH is set to a predetermined first limit number or less, and the number of terminals transmitting data simultaneously using RACH is set to a predetermined second limit number or less. A terminal control step for controlling
A reception data storage step of storing the wireless reception data after processing by the wireless transmission processing means in reception data storage means ;
The processing target when the radio interface protocol processing means processes the radio reception data is received by UL DCH data and RACH which are the radio reception data received by UL DCH for each processing slot which is a predetermined processing unit time. One or less of the received RACH data as the radio reception data and one or less E-DCH data as the radio reception data received by E-DCH, and the UL DCH in one processing slot The upper limit value of the data processing amount is the data amount corresponding to the UL DCH minimum transmission interval, and the upper limit value of the processing amount of the E-DCH data in one processing slot is the first limit number. An amount obtained by multiplying the amount of data corresponding to the transmission interval is multiplied by the upper limit value of the processing amount of the RACH data in one processing slot to the second limit number. The minimum transmission interval transmitted at the minimum transmission interval of each channel so that the processing amount for each channel in each processing slot does not exceed the upper limit value for each channel, by multiplying the amount of data corresponding to the minimum transmission interval of CH Data is selected as processing target data for each processing slot, and the wireless reception data transmitted at a transmission interval other than the minimum transmission interval is divided for each upper limit value of the processing amount of the channel through which the data is transmitted. A processing target data selection step for selecting the processed data as a processing target of the processing slot so that the processing amount of each channel in each processing slot does not exceed the upper limit value of the processing amount of the channel;
A radio interface processing step in which the radio interface protocol processing means reads and processes the processing target data selected as the processing target of the processing slot in the processing target data selection step from the received data storage means for each processing slot;
A data processing method comprising: Wireless transmission processing means for receiving wireless reception data from a terminal to be wirelessly connected and performing predetermined wireless transmission processing as a base station on the wireless reception data, and wireless performing wireless interface protocol processing as a wireless network controller A data processing method in a wireless communication device comprising an interface protocol processing means,
The radio transmission processing means, the number of the terminal which is less than the first limit the number of predetermined said terminal to receive data simultaneously using the HS-DSCH, to receive data simultaneously using the PCH or FACH A transmission step of transmitting wireless transmission data to the terminal so as to be equal to or less than a predetermined second limit number;
Wherein the radio interface protocol processing wireless signal data storing step transmission that stores the transmission data to the transmission data storage unit after treatment with means,
The processing target when the radio interface protocol processing means for processing the radio transmission data, for each processing slot is a predetermined unit processing time, in DL DCH data and PCH or FACH is a wireless transmission data to be transmitted in DL DCH and one below of the PCHFACH data is a wireless transmission data to be transmitted, and with at most one HS-DSCH data is a wireless transmission data to be transmitted by the HS-DSCH, also the DL DCH data in one processing slot The upper limit value of the processing amount is the data amount corresponding to the DL DCH minimum transmission interval, and the upper limit value of the processing amount of the HS-DSCH data in one processing slot is the first limit number, and the minimum transmission of the HS-DSCH The amount of data corresponding to the interval is multiplied by the amount of processing of the PCHFACH data in one processing slot. The limit value is obtained by multiplying the second limit number by the data amount corresponding to the minimum transmission interval of PCH and FACH, and the processing amount for each channel in each processing slot does not exceed the upper limit value of the processing amount for each channel. As described above, the minimum transmission interval transmission data to be transmitted at the minimum transmission interval of each channel is selected as the processing target data of each processing slot, and the radio transmission data to be transmitted at a transmission interval other than the minimum transmission interval is the channel for transmitting the data. The transmission division data is divided into the upper limit values of the processing amount corresponding to each of the processing slots so that the processing amount for each channel in each processing slot does not exceed the upper limit value of the processing amount of the channel. A transmission processing target data selection step to select as a processing target;
The radio interface protocol processing means processes the processing target data selected as the processing target of the processing slot in the transmission processing target data selection step for each transmission processing slot, and processes the minimum transmission interval transmission data and the transmission division after processing. A radio interface protocol processing step of storing data in the transmission data storage means;
The wireless transmission processing means reads the minimum transmission interval transmission data and the transmission division data from the transmission data storage means , performs wireless transmission processing on the minimum transmission interval transmission data, and also transmits the same wireless transmission data. A wireless transmission step of combining all of the divided transmission divided data into data after the wireless interface protocol processing corresponding to the wireless transmission data before division, and performing wireless transmission processing on the combined data ;
Data processing method, which comprises a.

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