JP4763085B2 - Mobile station, communication system, and wireless communication method - Google Patents

Description

  The present invention relates to a mobile station, a base station, a communication system, a data amount information transmission method, a transmission control information notification method, and a wireless communication method that communicate packet data.

In recent years, as a high-speed CDMA (Code Division Multiple Access) mobile communication system, a communication standard called the third generation has been adopted as IMT-2000 in the International Electric Union (ITU), and W-CDMA (FDD). : Frequency Division Duplex) started commercial service in Japan in 2001.
The W-CDMA system has an initial target performance of being able to obtain a communication speed of about 2 Mbps (Mega bit per sec) per mobile station, and has been released by a standardization organization 3GPP (3rd Generation Partnership) in 1999 The first specification is determined as the 1999 version (Version name: 3.x.x).
Various standards for the above releases (including subsequent releases) are published on the Internet as follows, and their contents are updated. Currently, release 4 and release 5 are defined as other new versions of the release 1999 version, and release 6 is being created.
URL: http://www.3gpp.org/ftp/Specs/archive/

According to the above-mentioned standard, “data transmission from a mobile station to a base station always secures radio resources as individual channels (DCH: Dedicated Channel) for each mobile station even when burst transmission such as packet data is performed. ”. For this reason, a lot of waste occurs from the viewpoint of effective use of radio resources.
In addition, since data transmission from the mobile station is performed by the autonomous transmission control of the mobile station (Autonomous Transmission), the transmission timing of each mobile station is arbitrary (random). In the CDMA communication system, all transmissions from other mobile stations become interference sources, and therefore, the amount of interference noise and the amount of fluctuation when the base station receives data can only be predicted statistically.
For this reason, in the radio resource management of the communication system, it is necessary to allocate radio resources so as to suppress the throughput (maximum transmission speed of the mobile station) and obtain an interference margin on the assumption that the fluctuation amount is large.

Allocation control of radio resources for mobile station transmission in the W-CDMA standard is not actually performed by the base station, but by a base station controller (RNC: Radio Network Controller) that organizes the base stations.
Radio resource allocation control performed by the base station controller for a mobile station and exchange of setting information thereof require a relatively long processing time (in the order of several hundred msec). High-speed radio resource allocation control cannot be performed while looking at the transmission status of mobile stations (the amount of interference from other mobile stations).
Therefore, a proposal has been made to improve the accuracy of radio resource allocation control related to data transmission of a mobile station by adding a part of the radio resource allocation function to the base station based on the specifications of the standard.

As a document newly proposed as an uplink performance enhancement / function expansion (E-DCH: Enhancement of Dedicated Channel), R1-0300
67 ("AH64: Reducing control channel overhe
ad for Enhanced Uplink "; hereinafter referred to as Non-Patent Document 1). 1 discloses an on-demand channel allocation scheme in the uplink.
This document is posted on the Internet as follows.
URL: http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_30/Docs/Zips/R1-030067.zip> [Search January 7, 2004]

FIG. 1, a mobile station (UE: User Equipment) having a packet to be transmitted transmits packet data by a transmission request channel (USICCH: Uplink Scheduling Information Control Channel) including data amount information (Queue size) of untransmitted packet data. The request is transmitted to the base station (Node-B).
When the base station receives a packet data transmission request from the mobile station, the base station transmits a radio resource allocation result (scheduling result) indicating a transmission timing allocation to the mobile station (DSACCH: Downlink Scheduling Assignment Control Channel). Send with.

When the mobile station receives the scheduling result from the base station, the mobile station places packet data on a data transmission channel (EUDCH: Enhanced Uplink Transport Channel) according to the scheduling result and transmits the packet data to the base station.
Here, information such as a modulation scheme at the time of transmission of packet data is separately transmitted to the base station via a modulation format information channel (UTCCH: Uplink TFRI Control Channel).
When the base station receives the packet data from the mobile station, the base station transmits information on a reception determination result (so-called ACK / NACK) of the packet data on a notification channel (DANCCH: Downlink Ack / Nack Control Channel) and transmits the information to the mobile station. .

These channels are assumed to be expansions of conventional standard channels or introduction of new channels, and details thereof have not been proposed.
As described above, a technique for notifying data amount information from a mobile station to a base station is also disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2003-46482).
In the conventional W-CDMA standard, information on the amount of untransmitted data transmitted from the mobile station is once received by the base station, but is transmitted directly to the base station control apparatus through the base station. For this reason, the content of the information regarding the amount of untransmitted data cannot be grasped by the base station. Therefore, control of radio resources by the base station as in Non-Patent Document 1 cannot be performed.
Even if it is possible to provide means for transmitting information acquired by the base station control device to the base station, the transmission cycle of untransmitted data amount information from the mobile station to the base station control device is a long cycle (for example, , 250 ms / 500 ms /... / 6000 ms), the base station cannot perform high-speed radio resource control.

In connection with the on-demand channel allocation method disclosed in Non-Patent Document 1, a proposal regarding the transmission timing of notification of data amount information of untransmitted data is R1-031056 (Uplink signaling of scheduling information: (Referred to as Document 2). In this proposal, various transmission methods such as a periodic transmission method are presented. This document is posted on the Internet as follows.
URL: http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_34/Docs/Zips/R1-030056.zip> [Search January 7, 2004]
However, in the W-CDMA system, since one mobile station can simultaneously perform a plurality of communication services, data having different priorities and delay requests (so-called QoS: Quality of Service) are mixed in the mobile stations. However, in the various documents described above, such a case is not taken into consideration, and it is considered that the total data amount information is simply notified to the base station.

JP 2003-46482 A

R1-030067 (“AH64: Reducing control channel overhead for Enhanced Uplink” R1-031056 (Uplink signaling of scheduling information

  Since the conventional communication system is configured as described above, even if the total data amount information is notified to the base station, the base station can grasp the data amount of data for each communication service or each transmission channel. However, there is a problem that the transmission timing of data for each communication service or each transmission channel cannot be appropriately controlled.

The present invention has been made to solve the above-described problems, and can appropriately control the transmission timing of data for each communication service or each transmission channel, a base station, a communication system, a transmission control information notification method, and An object is to obtain a wireless communication method.
Another object of the present invention is to provide a mobile station and a data amount information transmission method that enable a base station to appropriately control the transmission timing of data for each communication service or transmission channel.

  A communication system according to the present invention includes a base station that notifies transmission control information indicating radio resources, and a mobile station that transmits data to the base station according to transmission control information notified from the base station. The mobile station monitors a plurality of communication service data for each communication service or each transmission channel, and monitors the data for each communication service or each transmission channel stored in the transmission buffer to perform the communication. Data amount information determining means for determining data amount information for each service or transmission channel, and data amount information for each communication service or transmission channel determined by the data amount information determining means are transmitted to indicate a transmission power margin. Transmitting means for transmitting to the base station together with power margin information, the data received by the base station from the mobile station. Based on the data amount information and the transmission power margin information, in which the radio resources for data transmission to said base station from said mobile station has to include a scheduler to assign to the mobile station.

  Thus, there is an effect that the base station can appropriately control the data transmission timing for each communication service or each transmission channel.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the communication system by Embodiment 1 of this invention. It is a block diagram which shows the mobile station by Embodiment 1 of this invention. It is explanatory drawing which shows the multiplex relationship between the upper layer block part in a mobile station, a radio link control part, a media access control part, a physical layer control part, and various channels. It is a block diagram which shows the inside of the radio | wireless resource control part of a mobile station. It is a block diagram which shows the inside of the radio link control part of a mobile station. It is a block diagram which shows the inside of the media access control part of a mobile station. It is a block diagram which shows the inside of the physical layer control part of a mobile station. It is a block diagram which shows the base station and base station control apparatus by Embodiment 1 of this invention. It is a block diagram which shows the inside of the media access control part of a base station and a base station control apparatus. It is a block diagram which shows the inside of the physical layer control part of a base station. It is a transmission flowchart which shows the transmission flow of the packet data (E-DCH) in an uplink. A is an explanatory diagram showing an example of buffer occupancy by service and an index for the combination, and B is an explanatory diagram showing an example of buffer occupancy by transmission buffer of the radio link control unit and an index for the combination. is there. FIG. 10 is a process flow diagram showing a process flow regarding communication service setting information notification and transmission buffer size setting notification exchanged between a mobile station and a base station when performing a plurality of communication services. Processing flow showing dedicated exchange when notifying only the total memory size information of the transmission buffers of all radio link control units as one of mobile station capability (UE Capability Notice) information from the base station to the base station controller FIG. A is an explanatory view showing an example of buffer data amount information for each communication service and an index for the combination, and B is an example of data amount information for each transmission buffer of the radio link control unit and an index for the combination. It is explanatory drawing. FIG. 5 is an explanatory diagram showing service quality (QoS: Quality of Service) for each type of communication service (Class) in order to enable data amount notification in the format of “data amount / guarantee bit rate” (unit: sec). It is a block diagram which shows the inside of the media access control part of a mobile station. A is an explanatory view showing an example of buffer data amount information for each communication service and an index for the combination, and B is an example of data amount information for each transmission buffer of the radio link control unit and an index for the combination. It is explanatory drawing. A is an explanatory diagram showing an example of buffer data amount information for each communication service and an index for the combination, and B is an explanation showing an example of data amount information for each transmission of the radio link control unit and an index for the combination. FIG. It is explanatory drawing which shows the quality of service (QoS: Quality of Service) according to the kind of communication service (Class) in order to enable the notification of the data amount in the format of “data amount / delay” (unit: bit per sec). It is explanatory drawing which shows an example of the communication speed value of E-DCH as data amount information (TRbuffer), and its index (TFCI). It is explanatory drawing which shows an example of the communication speed value of E-DCH as data amount information (TRbuffer), and its index (TFRI). It is explanatory drawing which shows a channel amplitude coefficient ((beta)) setting of DPDCH at the time of E-DCH transmission as data amount information (TRbuffer), and an example of the index. It is explanatory drawing which shows an example of the multiplexing between a transport channel and a physical channel in the multiplexing part of a mobile station. It is explanatory drawing which shows the setting of the transmission physical channel power offset at the time of E-DCH transmission as data amount information (TRbuffer), and an example of the index. It is a transmission flowchart which shows the transmission flow of the packet data (E-DCH) in an uplink. It is explanatory drawing which shows the transmission period timing in the case of transmitting uplink radio | wireless resource request information. It is a flowchart which shows the exchange between the mobile station at the time of setting the transmission parameter used for transmission, a base station, and a base station control apparatus.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
1 is a block diagram showing a communication system according to Embodiment 1 of the present invention. In the figure, the communication system includes a mobile station 1, a base station 2, and a base station control device 3.
The base station 2 covers a specific communication range (generally called a sector or a cell) and performs wireless communication with a plurality of mobile stations 1. However, for convenience of explanation in FIG. 1, only one mobile station 1 is shown, but a plurality of mobile stations 1 may be provided. Communication between the mobile station 1 and the base station 2 is performed using a plurality of radio links (or channels).
The base station control device 3 is connected to an external communication network 4 such as a public telephone network or the Internet, and relays packet communication between the base station 2 and the communication network 4.
In the W-CDMA standard, the mobile station 1 is called UE (User Equipment), the base station 2 is called Node-B, and the base station control device 3 is called RNC (Radio Network Controller).

An uplink DPCCH (Dedicated Physical Control Channel) is a physical channel for control from the mobile station 1 to the base station 2 (Physical Control Channel), and a downlink DPCCH is a physical layer control channel from the base station 2 to the mobile station 1. is there. The two DPCCHs are used to perform transmission / reception timing synchronization control between the mobile station 1 and the base station 2 to maintain a wireless link during communication.
An uplink DPDCH (Dedicated Physical Data Channel) is a data transmission physical layer channel (Physical Data Channel) for transmitting data corresponding to a conventional standard channel (DCH) from the mobile station 1 to the base station 2, or this book It is a physical layer channel for data transmission for transmitting information data of a packet data corresponding channel (E-DCH) related to the invention.

The downlink DPDCH is a physical layer channel for data transmission for transmitting data corresponding to a conventional standard channel (DCH) from the base station 2 to the mobile station 1.
An uplink E-DPCCH (Enhanced-Dedicated Physical Control Channel) is a physical layer control channel for reporting mobile station information from the mobile station 1 to the base station 2.
The downlink E-DPCCH is a channel for notifying the mobile station 1 of the notification of the radio resource allocation result in the base station 2 or the data reception determination result in the base station 2.
Note that the above various channels include channels that are not in the conventional standard, and are performed by extending the specification of the conventional standard or inserting a new channel. However, if the channel is unconfirmed and set as a new standard, the standard document TS25.211 In the new release, the format will be additionally defined while ensuring consistency with the conventional standard (so-called Backward Compatibility).

Next, the internal structure of the mobile station 1 will be described with reference to FIGS.
FIG. 2 is a block diagram showing the mobile station 1 according to the first embodiment of the present invention. In the figure, the upper layer block unit 11 is called UPPER and is based on a known technique in an upper protocol layer such as an application or TCP / IP layer. Predetermined processing is performed, and one or more transmission data (Tx Data) for the base station 2 is output to the radio link control unit 12, while one or more reception data (Rx Data) is input from the radio link control unit 12. In the first embodiment, for convenience of explanation, it is assumed that the upper layer block unit 11 outputs transmission data (Tx Data) corresponding to two types of communication services to the radio link control unit 12.

The radio link control unit 12 is called RLC (Radio Link Control), and exchanges data (Tx Data, Rx Data) with the higher layer block unit 11, while at least one logical link is performed with the media access control unit 13. A channel (LOG ch: Logical Channel) is set, and data exchange with the media access control unit 13 is performed by one or more logical channels. In addition, the radio link control unit 12 outputs data amount information (LOGbuffer) of transmission data stored in the internal transmission buffer to the media access control unit 13.
The media access control unit 13 is called a MAC (Media Access Control), and exchanges data with the radio link control unit 12, while at least one transport channel (TR ch: Transport) with the physical layer control unit 14. Channel) is set, and data is exchanged with the physical layer control unit 14 through one or more transport channels. Further, the media access control unit 13 outputs data amount information (TRbuffer) of transmission data stored in the internal transmission buffer to the physical layer control unit 14.

The physical layer control unit 14 is called PHY (PHYsical), and exchanges data with the media access control unit 13, while performing radio communication with the base station 2 by transmitting and receiving radio frequency signals from the antenna 15.
The radio resource control unit 16 is called RRC (Radio Resource Control), and controls the upper layer block unit 11, the radio link control unit 12, the media access control unit 13, and the physical layer control unit 14, so that various information (UPcont, RLCcont, MACcont, PHYcont).
The radio link control unit 12 and the media access control unit 13 constitute data amount information determining means, and the physical layer control unit 14 constitutes transmission means.

FIG. 3 is an explanatory diagram showing the multiplex relationship among the upper layer block unit 11, the radio link control unit 12, the media access control unit 13, the physical layer control unit 14, and various channels in the mobile station 1.
In FIG. 3, “NodeB → UE” is a downlink, indicating that the mobile station is the receiving side. “UE → NodeB” is an uplink and indicates that the mobile station is the transmitting side.

  In the first embodiment, it is assumed that two communication services (Service 1 and Service 2) are performed simultaneously. In addition, transmission / reception data (Tx Data, Rx Data) of Service 1 is assigned to logical channel 1 (DTCH1: Dedicated Traffic Channel 1), and transmission / reception data of Service 2 (Tx Data, Rx Data) is logical channel 2 (DTCH2: Dedicated Channel). 2).

In transmission from the mobile station 1 (UE → NodeB), the logical channel 1 (DTCH1) and the logical channel 2 (DTCH2) are transferred to the packet data corresponding channel (E-DCH) which is a transport channel in the media access control unit 13. Multiplexed, packet data corresponding channels (E-DCH) are allocated to uplink DPDCH in the physical layer control unit 14.
Mobile station information transmitted from the radio resource control unit 16 to the base station control device 3 through the base station 2 becomes control logical channel (DCCH) data in the radio resource control unit 16, and further, the media access control unit 13. Are multiplexed on the uplink DCH.
Further, the packet data corresponding channel (E-DCH) and the uplink DCH are multiplexed by the physical layer control unit 14 on the uplink DPDCH.

The physical layer control unit 14 generates DPCCH and E-DPCCH, which are uplink control channels.
On the other hand, in reception from the base station 2 (NodeB → UE), downlink DPDCH data is allocated to the downlink DCH, and the downlink DCH includes logical channel 1 (DTCH1), logical channel 2 (DTCH2), The control logical channel DCCH is multiplexed.
Further, the physical layer control unit 14 uses downlink DPCCH and E-DPCCH in the same manner as uplink.

FIG. 4 is a configuration diagram showing the inside of the radio resource control unit 16 of the mobile station 1. In the figure, the RRC control unit 21 controls the overall operation of the radio resource control unit 16, and controls the upper layer block unit 11, the radio Various information (UPcont, RLCcont, MACcont, PHYcont) is exchanged in order to control the link controller 12, the media access controller 13, and the physical layer controller 14. In particular, setting information related to a communication service is obtained from the higher layer block unit 11 and the setting information is output to the radio link control unit 12, the media access control unit 13, and the physical layer control unit 14.
The service unit 22 determines detailed settings related to the communication service between the mobile station 1 and the base station control device 3, and stores the setting information.
The communication capability unit 23 stores information on various communication capabilities (for example, maximum transmission power, maximum transmission speed, total memory size, etc.) of the mobile station 1, and stores various communication capability information at the start of communication. 12. Notify the base station 2 via the media access control unit 13 and the physical layer control unit 14.

  FIG. 5 is a block diagram showing the inside of the radio link control unit 12 of the mobile station 1. In the figure, the reception buffers 31 a and 31 b receive logical channel (DTCH 1 and DTCH 2) data from the media access control unit 13. The data is output to the upper layer block unit 11 as communication service data (RX DATA1, RX DATA2). The reception buffer 31c receives logical channel (DCCH) data from the media access control unit 13 and outputs the data to the RLC control unit 33 as control information.

The transmission buffers 32a and 32b receive communication service data (TX DATA1, TX DATA2) from the upper layer block unit 11, and output the data to the media access control unit 13 as data of logical channels (DTCH1, DTCH2). The transmission buffer 32c receives control information from the upper layer block unit 11 and outputs the control information to the media access control unit 13 as logical channel (DCCH) data.
The RLC control unit 33 controls the entire radio link control unit 12. The buffer monitoring unit 34 monitors the data (untransmitted data) stored in the transmission buffers 32a, 32b, and 32c, and sends the data amount information (LOGbuffer) of the transmission buffers 32a, 32b, and 32c to the media access control unit 13. Output.

FIG. 6 is a block diagram showing the inside of the media access control unit 13 of the mobile station 1. In the figure, the reception DCH buffer 41 receives reception DCH data from the physical layer control unit 14 and separates the reception DCH data. To the unit 42.
The data separator 42 separates the data of each logical channel (DTCH1, DTCH2, DCCH) multiplexed in the received DCH data by a known technique and outputs the data to the reception buffers 31a, 31b, 31c of the radio link controller 12. .

The data multiplexing unit 43 multiplexes (or distributes) the data of each logical channel (DTCH1, DTCH2, DCCH) output from the transmission buffers 32a, 32b, and 32c of the radio link control unit 12 using a known technique, and transmits it as DCH data. The data is output to the DCH buffer 44 and also output to the extended transmission MAC processing unit 45 as E-DCH data.
The extended transmission MAC processing unit 45 receives the E-DCH data from the data multiplexing unit 43, outputs the E-DCH data to the extended DCH transmission buffer 46, and receives the data amount from the buffer monitoring unit 34 of the radio link control unit 12. Information (LOGbuffer) is input and output to the data amount information calculation unit 47 as data amount information (LOGbuffer). The extended transmission MAC processing unit 45 also receives downlink E-DPCCH data received and demodulated by the physical layer control unit 14.

The data amount information calculation unit 47 uses the data amount for each communication service (or logical channel for data transmission (DTCH1, DTCH2) among the logical channels allocated to the E-DCH based on the data amount information (LOGbuffer). And the data amount information (TRbuffer) is output to the physical layer control unit 14.
The MAC control unit 48 controls the entire media access control unit 13 and exchanges information (MACcont) with the radio resource control unit 16.

FIG. 7 is a configuration diagram showing the inside of the physical layer control unit 14 of the mobile station 1. In FIG. 7, when the antenna 15 receives a radio frequency signal transmitted from the base station 2, the receiving unit 51 receives the radio frequency signal. A baseband signal is converted by a known technique.
The demodulator 52 demodulates the baseband signal output from the receiver 51 using a known technique, and outputs the demodulated data to the demultiplexer 53 as data of various downlink physical channels (DPDCH, DPCCH, E-DPCCH).

The separation unit 53 separates the transport channel (DCH) and the physical control channel (DPCCH, E-DPCCH) from the data of various downlink physical channels (DPDCH, DPCCH, E-DPCCH) by a known technique. Further, the separation unit 53 outputs DCH data and E-DPCCH data to the media access control unit 13 and outputs DPCCH data to the PHY control unit 57. In the first embodiment, the transport channel multiplexed on the received DPDCH has only one DCH.
The multiplexing unit 54 transmits the uplink transport channel (DCH, E-DCH) data output from the media access control unit 13, the uplink DPCCH data output from the PHY control unit 57, and the uplink E -DPCCH data is input, these data are multiplexed by a known technique, and output to the modulation unit 55 as data of various transmission physical channels (DPDCH, DPCCH, E-DPCCH).
The modulation unit 55 modulates data of various transmission physical channels (DPDCH, DPCCH, E-DPCCH) output from the multiplexing unit 54 by a known technique, and outputs the modulated baseband signal to the transmission unit 56.

Here, DPDCH, DPCCH, and E-DPCCH are code-multiplexed with different spreading codes, but the multiplexing method is not limited to this.
The transmission unit 56 converts the transmission baseband signal output from the modulation unit 55 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 15 to the base station 2.
The PHY control unit 57 controls the entire physical layer control unit 14 and exchanges information (PHYcont) with the radio resource control unit 16. Further, the PHY control unit 57 inputs data amount information (TRbuffer) from the data amount information calculation unit 47 of the media access control unit 13, and also transmits the DPCCH and E-DPCCH which are uplink radio channels to the multiplexing unit 54. Output.

Next, the internal structure of the base station 2 will be described with reference to FIGS.
However, since the basic configuration of the base station 2 is the same as that in FIG. 2 to FIG. 7 showing the internal structure of the mobile station 1, the uplink related component and the downlink related link component are replaced. The components different from the mobile station 1 will be mainly described.
FIG. 8 is a block diagram showing the base station 2 and the base station control device 3 according to Embodiment 1 of the present invention.
The difference from the mobile station 1 is that the mobile station 1 shown in FIG. 2 has all the components mounted therein, whereas the components are distributed and arranged in the base station controller 3 and the base station 2. It is a point.

That is, the upper layer block unit 101, the radio link control unit 102, and the radio resource control unit 106 are arranged in the base station control device 3, and the physical layer control unit 104 is arranged in the base station 2. Further, the media access control unit 103 is disposed in both the base station control device 3 and the base station 2.
Further, the media access control unit 103 is different from the mobile station 1 in that a scheduler 116 for controlling uplink E-DCH transmission radio resources is incorporated. Note that the physical layer control unit 104 constitutes reception means and notification means, and the media access control unit 103 constitutes transmission timing determination means.
Since the upper layer block unit 101, the radio link control unit 102, and the radio resource control unit 106 are the same as those in the mobile station 1, description thereof will be omitted.

FIG. 9 is a configuration diagram showing the inside of the media access control unit 103 of the base station 2 and the base station control device 3. In the figure, the reception DCH buffer 111 receives reception DCH data from the physical layer control unit 104, Received DCH data is output to data separator 113.
The extended DCH reception buffer 112 receives E-DCH data from the physical layer control unit 104 and outputs the E-DCH data to the data separation unit 113.
The data separation unit 113 separates the data of each logical channel (DTCH1, DTCH2, DCCH) multiplexed in the received DCH data and E-DCH data by a known technique, and outputs the separated data to the reception buffer of the radio link control unit 102 .

The data multiplexing unit 114 multiplexes (or distributes) data of each logical channel (DTCH1, DTCH2, DCCH) output from the transmission buffer of the radio link control unit 102 by a known technique, and outputs the multiplexed data to the transmission DCH buffer 115 as DCH data. To do.
The scheduler 116 receives the reception determination result (ACK / NACK) and uplink E-DPCCH data from the physical layer control unit 104, and outputs the downlink E-DPCCH to the physical layer control unit 104.
The MAC control unit 117 controls the entire media access control unit 103 and exchanges information (MACcont) with the radio resource control unit 106.

FIG. 10 is a configuration diagram showing the inside of the physical layer control unit 104 of the base station 1. In the figure, when the antenna 105 receives a radio frequency signal transmitted from the mobile station 1, the reception unit 121 receives the radio frequency signal. A baseband signal is converted by a known technique.
The demodulator 122 demodulates the baseband signal output from the receiver 121 using a known technique, and outputs the demodulated data to the demultiplexer 123 as data of various uplink physical channels (DPDCH, DPCCH, E-DPCCH).
The demultiplexing unit 123 uses a known technology for transport channels (DCH and E-DCH) and physical control channels (DPCCH, E-DPCCH) from data of various uplink physical channels (DPDCH, DPCCH, E-DPCCH). Separate with. Further, the separation unit 123 outputs DCH data, E-DCH data, and E-DPCCH data to the media access control unit 103. In addition, the demultiplexing unit 123 outputs the reception determination result (ACK / NACK) of the E-DCH data and the uplink E-DPCCH data to the scheduler 116 of the media access control unit 103, and transmits the uplink DPCCH data to the PHY control unit. To 127.

The multiplexing unit 124 outputs downlink transport channel (DCH) data output from the media access control unit 103, downlink E-DPCCH data output from the scheduler 116, and output from the PHY control unit 127. Downlink DPCCH data is input, these data are multiplexed by a known technique, and output to modulation section 125 as data of various transmission physical channels (DPDCH, DPCCH, E-DPCCH).
The modulation unit 125 modulates data of various transmission physical channels (DPDCH, DPCCH, E-DPCCH) output from the multiplexing unit 124 by a known technique, and outputs the modulated baseband signal to the transmission unit 126.

Here, DPDCH, DPCCH, and E-DPCCH are code-multiplexed with different spreading codes, but the multiplexing method is not limited to this.
The transmission unit 126 converts the transmission baseband signal output from the modulation unit 125 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 105 to the mobile station 1.
The PHY control unit 127 controls the entire physical layer control unit 104 and exchanges information (PHYcont) with the radio resource control unit 106.
FIG. 11 is a transmission flow chart showing a transmission flow of packet data (E-DCH) in the uplink.

Next, the operation will be described.
First, the mobile station 1 measures the data amount of untransmitted data (step ST1).
That is, the data of the service 1 (Service 1) and the service 2 (Service 2) generated in the upper layer block unit 11 of the mobile station 1 are transmitted data (TX DATA1, TX DATA2) as transmission data 32a of the radio link control unit 12. 32b, and further output from the transmission buffers 32a and 32b to the data multiplexing unit 43 of the media access control unit 13 as data of transmission logical channels (DTCH1 and DTCH2).

Various mobile station control information related to data transmission of service 1 is stored as control information (RLCont) from the service unit 22 of the radio resource control unit 16 to the transmission buffer 32c through the RLC control unit 34, and further, the transmission buffer 32c. To the data multiplexing unit 43 of the media access control unit 13 as a control logical channel (DCCH).
At this time, the transmission buffers 32a, 32b, and 32c of the radio link control unit 12 output the data size information (Data size) of the stored data to the buffer monitoring unit 34 periodically or when the data amount changes.

The buffer monitoring unit 34 of the radio link control unit 12 outputs the data size information output from the transmission buffers 32a, 32b, and 32c to the data amount information calculation unit 47 of the media access control unit 13 as data amount information (LOGbuffer).
When the data amount information calculation unit 47 (data amount information determination unit) of the media access control unit 13 receives the data amount information (LOGbuffer) from the buffer monitoring unit 34, the data amount information calculation unit 47 (data amount information determination unit) determines the communication service based on the data amount information (LOGbuffer). Data amount (data amount of service 1 and service 2) is calculated. Alternatively, the data amount (data amount of DTCH1 and DTCH2) for each logical channel for data transmission among the logical channels allocated to E-DCH is calculated.
Then, data amount information (TRbuffer) for each communication service or for each logical channel for data transmission is output to the PHY control unit 57 of the physical layer control unit 14.
Next, the mobile station 1 notifies the base station 2 of the uplink E-DPCCH in order to make an uplink radio resource allocation request (step ST2).

The specific transmission operation of the E-DPCCH of the mobile station 1 in step ST2 is as follows.
First, the PHY control unit 57 of the physical layer control unit 14 outputs data amount information (TRbuffer) to the multiplexing unit 54 as uplink E-DPCCH data.
The multiplexing unit 54 of the physical layer control unit 14 multiplexes the uplink E-DPCCH data output from the PHY control unit 57 to the uplink E-DPCCH by a known technique.
The modulation unit 55 of the physical layer control unit 14 modulates the uplink E-DPCCH data multiplexed by the multiplexing unit 54 using a known technique and outputs the modulated data to the transmission unit 56 as a transmission baseband signal.
The transmission unit 56 of the physical layer control unit 14 converts the transmission baseband signal output from the modulation unit 55 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 15 to the base station 2.

The uplink E-DPCCH includes other data such as transmission power margin information (Power margin) shown in the description of the transmission request channel USICCH in Non-Patent Document 1 in addition to the data amount information (TRbuffer). Station information can be included. What information is included in the transmission depends on the configuration of the scheduler 116 installed in the base station 2 and is not directly related to the effect of the present invention, but the details are described in the standard TS25.331 (RRC signaling) It will be prescribed by.
Here, it is assumed that the scheduler 116 of the base station 2 performs scheduling using data amount information (TRbuffer) and transmission power margin information (Power margin) as allocation determination means.

Note that when the data amount information (TRbuffer) is multiplexed on the uplink E-DPCCH, the data amount information (TRbuffer) can be converted into various representation formats as shown below.
(1) Amount of data (number of bits) in the transmission buffer for each communication service or for each logical channel (DTCH1, DTCH2) for data multiplexed on E-DCH
(2) Index (Index) indicating a combination of the data amount (number of bits) of (1)
(3) Buffer occupation rate (%) for each of the transmission buffers 32a, 32b, and 32c of the radio link control unit 12
(4) Index indicating the combination of buffer occupancy (%) in (3) (Index)
FIG. 12A is an explanatory diagram showing an example of the buffer occupancy by service and an index for the combination. FIG. 12B shows the buffer occupancy by transmission buffer 32a, 32b of the radio link controller 12 and the index for the combination. It is explanatory drawing which shows an example.
Note that the channel format (Channel format) of E-DPCCH is specified in the standard TS25.211, the multiplexing process is specified in the standard TS25.212, and the correspondence between the data amount information and the index (Index) is described in the standard. It will be specified in TS25.214.

Next, the reception operation of E-DPCCH of base station 2 in step ST2 is as follows.
When the antenna 105 receives the radio frequency signal transmitted from the mobile station 1, the receiving unit 121 of the physical layer control unit 104 converts the radio frequency signal into a baseband signal using a known technique.
When receiving the baseband signal from the reception unit 121, the demodulation unit 122 of the physical layer control unit 104 demodulates the baseband signal using a known technique, and outputs uplink E-DPCCH data to the separation unit 123.
When receiving the uplink E-DPCCH data from the demodulation unit 122, the separation unit 123 of the physical layer control unit 104 outputs the E-DPCCH data to the scheduler 116 of the media access control unit 103.
Upon receiving E-DPCCH data from the physical layer control unit 104, the scheduler 116 of the media access control unit 103 performs control (scheduling) of uplink radio resources for each mobile station 1 based on the E-DPCCH data. Implement (step ST3).

The specific operation of scheduling of the base station 2 in step ST3 is as follows.
The scheduler 116 of the base station 2 sets the increase in transmission power from each mobile station 1 when the scheduling result is reflected within the transmission power margin value, and then the type of communication service of each mobile station 1 The radio resource allocation is determined by comparing the data amount.
As a radio resource allocation method, the following method can be applied. In designing the base station 2 and the communication system, for example, the design and selection are performed so that the throughput of the entire cell becomes the highest.
(1) A method for giving priority to mobile station 1 with a large amount of untransmitted packets (2) A method for giving priority to mobile station 1 with a transmission power margin (3) A method for assigning transmission requests in the order received (4) Moving in a determined order A method of sequentially assigning to the station 1 (a method called so-called Round Robin)
(5) A method of preferentially allocating to the mobile station 1 having a good communication environment with less propagation loss or less interference (a method called so-called Max C / I)
(6) An intermediate method between Round Robin and Max C / I (a method called so-called Proportional Fair)

As scheduling targets, (1) only E-DCH is targeted and DCH is controlled by the conventional base station control apparatus 3, and (2) is under the control restrictions of the conventional base station control apparatus 3. In addition, various methods such as a method of performing control including the DCH can be applied. In designing the base station 2 and the communication system, for example, the design and selection are performed so that the throughput of the entire cell is maximized.
In the first embodiment, it is assumed that the maximum transmission power margin (Max Power Margin) and the mobile station transmission timing information (MAP) are used as information indicating the scheduling result and notified to the mobile station 1.
What information is used as scheduling result information depends on the operation of the scheduler 116 installed in the base station 2 and is not directly related to the effect of the present invention, but the details are described in the standard TS25.331 (RRC signaling). It will be defined by.

Next, the base station 2 notifies the mobile station 1 of scheduling result information through the downlink E-DPCCH (step ST4).
The specific transmission operation of the base station 2 in step ST4 is as follows.
The scheduler 116 of the base station 2 uses the maximum transmission power margin (Max Power Margin) and the mobile station transmission timing information (MAP) as scheduling result information as E-DPCCH data, and the multiplexing unit 124 of the physical layer control unit 104. Output to.
The multiplexing unit 124 of the physical layer control unit 104 multiplexes the downlink E-DPCCH data output from the scheduler 116 onto the downlink E-DPCCH by a known technique.
The modulation unit 125 of the physical layer control unit 104 modulates downlink E-DPCCH data multiplexed by the multiplexing unit 124 using a known technique and outputs the modulated data to the transmission unit 126 as a transmission baseband signal.
The transmission unit 126 of the physical layer control unit 104 converts the transmission baseband signal output from the modulation unit 125 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 105 to the mobile station 1.
Note that the maximum transmission power margin (Max Power Margin), which is scheduling result information, may be for E-DCH only or for all transmission power including DCH. The details are defined in the standard document TS25.214 and the like.

The specific reception operation of the mobile station 1 in step ST4 is as follows.
When the antenna 15 receives the radio frequency signal transmitted from the base station 2, the receiving unit 51 of the physical layer control unit 14 converts the radio frequency signal into a baseband signal by a known technique.
When receiving the baseband signal from the receiving unit 51, the demodulating unit 52 of the physical layer control unit 14 demodulates the baseband signal using a known technique, and outputs downlink E-DPCCH data to the demultiplexing unit 53.
When receiving the downlink E-DPCCH data from the demodulation unit 52, the separation unit 53 of the physical layer control unit 14 uses the E-DPCCH data as scheduling result information to the extended transmission MAC processing unit 45 of the media access control unit 13. Output.
When receiving the scheduling result information from the base station 2, the mobile station 1 refers to the scheduling result information and transmits untransmitted data using the uplink DPDCH (step ST5).

The specific transmission operation of the mobile station 1 in step ST5 is as follows.
The extended transmission MAC processing unit 45 of the media access control unit 13 determines the transmission data amount (or transmission speed) that can be transmitted within the range of the maximum transmission power margin (Max Power Margin) notified from the base station 2, and The transmission data is output to the extended DCH transmission buffer 46 as E-DCH data.
At this time, the extended transmission MAC processing unit 45 controls the output timing so that untransmitted data is transmitted at the timing specified by the scheduling result information (MAP).
The E-DCH data stored in the extended DCH transmission buffer 46 is output to the multiplexing unit 54 of the physical layer control unit 14.
On the other hand, the data of the control logical channel (DCCH) is stored in the transmission DCH buffer 44 as DCH data, and is further output from the transmission DCH buffer 44 to the multiplexing unit 54 of the physical layer control unit 14.

The multiplexing unit 54 of the physical layer control unit 14 multiplexes the E-DCH data output from the extended DCH transmission buffer 46 and the DCH data output from the transmission DCH buffer 44 onto the uplink DPDCH by a known technique.
The modulation unit 55 of the physical layer control unit 14 modulates the uplink DPDCH data multiplexed by the multiplexing unit 54 by a known technique and outputs the modulated data to the transmission unit 56 as a transmission baseband signal.
The transmission unit 56 of the physical layer control unit 14 converts the transmission baseband signal output from the modulation unit 55 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 15 to the base station 2.

The specific reception operation of the base station 2 in step ST5 is as follows.
When the antenna 105 receives the radio frequency signal transmitted from the mobile station 1, the receiving unit 121 of the physical layer control unit 104 converts the radio frequency signal into a baseband signal using a known technique.
When receiving the baseband signal from the receiving unit 121, the demodulating unit 122 of the physical layer control unit 104 demodulates the baseband signal using a known technique and outputs uplink DPDCH data to the demultiplexing unit 123.
When receiving the uplink DPDCH data from the demodulation unit 122, the separation unit 123 of the physical layer control unit 104 separates the E-DCH data and the DCH data from the DPDCH data.
In addition, the separation unit 123 examines the E-DCH data, performs reception determination of the E-DCH data, and when the reception determination result is OK, outputs an ACK to the scheduler 116 and the E-DCH data. -Output the DCH data to the extended DCH reception buffer 112.

The extended DCH reception buffer 112 outputs the E-DCH data output from the separation unit 123 to the upper layer block unit 101 through the radio link control unit 102.
When the reception determination result of E-DCH data is NG, demultiplexing section 123 outputs NACK to scheduler 116 and discards the E-DCH data.
The DCH data separated by the separation unit 123 of the physical layer control unit 104 is output to the radio link control unit 102 via the reception DCH buffer 111 and the data separation unit 113.
The base station 2 notifies the mobile station 1 of the reception determination result (ACK / NACK) of the E-DCH data through the downlink E-DPCCH (step ST6).

The specific transmission operation of the base station 2 in step ST6 is as follows.
The separation unit 123 of the physical layer control unit 104 outputs the reception determination result (ACK / NACK) of E-DCH data to the scheduler 116.
When the scheduler 116 receives the reception determination result (ACK / NACK) of the E-DCH data from the separation unit 123, the scheduler 116 converts the reception determination result (ACK / NACK) into downlink E-DPCCH data of the physical layer control unit 104. The data is output to the multiplexing unit 124.
The multiplexing unit 124 of the physical layer control unit 104 multiplexes the downlink E-DPCCH data output from the scheduler 116 onto the downlink E-DPCCH by a known technique.
The modulation unit 125 of the physical layer control unit 104 modulates downlink E-DPCCH data multiplexed by the multiplexing unit 124 using a known technique and outputs the modulated data to the transmission unit 126 as a transmission baseband signal.
The transmission unit 126 of the physical layer control unit 104 converts the transmission baseband signal output from the modulation unit 125 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 105 to the mobile station 1.

The specific reception operation of the mobile station 1 in step ST6 is as follows.
When the antenna 15 receives the radio frequency signal transmitted from the base station 2, the receiving unit 51 of the physical layer control unit 14 converts the radio frequency signal into a baseband signal by a known technique.
When receiving the baseband signal from the receiving unit 51, the demodulating unit 52 of the physical layer control unit 14 demodulates the baseband signal using a known technique, and outputs downlink E-DPCCH data to the demultiplexing unit 53.
When receiving the downlink E-DPCCH data from the demodulation unit 52, the separation unit 53 of the physical layer control unit 14 outputs the E-DPCCH data to the extended transmission MAC processing unit 45 of the media access control unit 13.
When the extended transmission MAC processing unit 45 of the media access control unit 13 receives the E-DPCCH data that is the reception determination result (ACK / NACK) of the E-DCH data from the separation unit 53, the reception determination result (ACK / NACK) Is determined to determine whether to retransmit the packet data or to newly transmit the packet data, and output the data to the extended DCH transmission buffer 46.

The extended DCH transmission buffer 46 outputs the data output from the extended transmission MAC processing unit 45 to the multiplexing unit 54 of the physical layer control unit 14 as E-DCH data.
The multiplexing unit 54 of the physical layer control unit 14 multiplexes the E-DCH data output from the extended DCH transmission buffer 46 on the uplink DPDCH by a known technique.
The modulation unit 55 of the physical layer control unit 14 modulates the uplink DPDCH data multiplexed by the multiplexing unit 54 by a known technique and outputs the modulated data to the transmission unit 56 as a transmission baseband signal.
The transmission unit 56 of the physical layer control unit 14 converts the transmission baseband signal output from the modulation unit 55 into a radio frequency signal by a known technique, and transmits the radio frequency signal (Data) from the antenna 15 to the base station 2. .
As described above, the data amount information of the E-DCH data transmitted from the mobile station 1 to the base station 2 is directly analyzed and used in the base station 2, and the base station 2 is based on the data amount information. Then, scheduling for packet data transmission in the uplink is performed using a known technique.

FIG. 13 is a processing flow diagram showing a processing flow regarding communication service setting information notification and size setting notification of the transmission buffers 32a, 32b, and 32c exchanged between the mobile station 1 and the base station 2 when performing a plurality of communication services. is there.
These notification processes are performed prior to the actual data transmission process of the communication service or when the communication service setting is changed during the transmission, and are performed separately from the actual data transmission.

First, the mobile station 1 uses, for example, “total memory size of transmission buffers 32a, 32b, and 32c in all radio link control units 12” and “all radio link control units” as mobile station capability (UE Capability Notice) information. 12, memory information such as “total memory size of reception buffers 31a, 31b, 31c”, “total memory size of transmission buffers in all media access control units 13”, “maximum transmission power”, “maximum transmission speed”, etc. Is notified to the base station controller 3 (step ST11).
At this time, the base station 2 operates as a relay point for transmission / reception of simple radio signals and information transmission with the base station control device 3.
The exchange of various types of information between the mobile station 1 and the base station controller 3 is called RRC signaling (RRC signaling) and is defined in the standard TS25.331 and the like.
Also, the specification of the mobile station capability (UE Capability Notice) is specified in the standard document TS25.306.
In the prior art, RRC signaling is transmitted and received using DCCH and DCH.

The specific transmission operation of the mobile station 1 in step ST11 is as follows.
The mobile station capability information is assumed to be stored in the communication capability unit 23 of the radio resource control unit 16 of the mobile station 1.
The communication capability unit 23 of the radio resource control unit 16 sets the RLC of the radio link control unit 12 using the “total memory size of the transmission buffers 32a, 32b, and 32c in all the radio link control units 12” information as control information (RLCcont). Output to the control unit 33.
This control information (RLCcont) becomes the data of the control logical channel (DCCH) in the radio link controller 12, and after the processing of the media access controller 13 and the physical layer controller 14 described above, 2 is wirelessly transmitted.

Specific reception operations of the base station 2 and the base station control device 3 in step ST11 are as follows.
When the radio signal wirelessly transmitted from the mobile station 1 is received by the antenna 105 of the base station 2, the receiving unit 121, the demodulating unit 122, and the demultiplexing unit 123 of the physical layer control unit 104 perform demodulation processing and the like. The data becomes DCCH data in the data separation unit 113 of the media access control unit 103.
The DCCH data separated by the data separation unit 113 is notified as control information (RLCcont) to the radio resource control unit 106 via the radio link control unit 102 of the base station control device 3.

Next, the base station control device 3 transmits the setting (Service Setup) information necessary for implementing each communication service and the mobile station transmission buffer memory partitioning (Memory partitioning) information necessary for each communication service by the RRC signaling. 1 is notified (step ST12).
This notification process is performed by the reverse operation of the above-mentioned mobile station capability notification process.
When the mobile station 1 receives the setting information, the mobile station 1 stores the setting information in the service unit 22 of the radio resource control unit 16 and issues an instruction to each unit inside the mobile station to configure the mobile station operation setting (Configuration or Reconfiguration) is performed.

Next, the radio resource control unit 16 of the mobile station 1 notifies the base station control device 3 via the base station 2 of completion information (Complete) indicating that the setting information has been reflected on each unit inside the mobile station. (Step ST13).
Since the detailed operation is the same as the notification processing of the mobile station capability, description thereof is omitted.
Next, the base station control device 3 notifies the base station 2 of setting information necessary for implementing each communication service and mobile station reception buffer memory division information necessary for each communication service (step ST14).

Here, the exchange between the base station 2 and the base station controller 3 is called NBAP signaling (NBAP signaling) and is defined in the standards TS25.423, TS25.433, and the like. The NBAP signaling information is transmitted by wired communication such as a coaxial cable, for example.
The above information is notified from the radio resource control unit 106 of the base station control device 3 to the radio link control unit 102 and the media access control unit 103.

Finally, the media access control unit 103 of the base station 2 uses the completion information (Complete) indicating that the setting information is reflected in each unit in the base station as control information (MACcont), and the radio resource control unit of the base station control device 3 106 is notified (step ST15).
In the exchange of information, the exchange between the mobile station 1 and the base station controller 3 and the exchange between the base station 2 and the base station controller 3 can be performed independently.

Next, a modified example of the exchange of setting information will be described.
FIG. 14 shows a case where only the total memory size information of the transmission buffers of all the radio link control units is notified from the base station 2 to the base station controller 3 as one of mobile station capability (UE Capability Notice) information. It is a processing flow figure showing exchange.
First, the mobile station 1 notifies mobile station capability information to the base station control device 3 in the same manner as in FIG. 13 (step ST21).
Next, the base station control device 3 notifies the mobile station 1 of reception information (ACK) by RRC signaling (step ST22).
Next, the base station control device 3 notifies the mobile station capability information to the base station 2 by NBAP signaling (step ST23).
Next, the base station 2 notifies the reception information (ACK) to the base station control device 3 by NBAP signaling (step ST24).
The detailed operation in each signaling is the same as in the case of FIG.

  As apparent from the above, according to the first embodiment, data amount information (or a combination thereof) of untransmitted data by packet communication service or by packet transmission logical channel transmitted by E-DCH data. Information) is notified from the mobile station 1 by base station termination communication separately from the notification of the data amount information using RRC signaling to the base station controller 3. As a result, a plurality of simultaneous communication services in the W-CDMA system can be supported, so that uplink packet transmission control (uplink radio resource control) in the base station 2 is made efficient, and the throughput of the entire cell is increased. The effect of improving is acquired.

In addition, by using an index (Index) when a plurality of pieces of data amount information are combined, the number of bits required for transmission can be reduced, and the effect of reducing the speed reduction (overhead) due to signaling can be obtained.
Further, since the data amount information is transmitted directly from the mobile station 1 to the base station 2 without going through the base station controller 3, high-speed and high-frequency transmission is possible, and the mobile station 1 transmits at the base station 2. Control (uplink radio resource control) is made more efficient, and the effect of improving the throughput of the entire cell can be obtained.

  In the first embodiment, the base station 2 notifies the mobile station 1 of the maximum transmission power margin (Max power margin) and the transmission timing (MAP) as scheduling result information. The transmission control may be performed in the form of transmission permission data amount control using the same expression format as the data amount information.

Embodiment 2. FIG.
FIG. 15A is an explanatory diagram showing an example of buffer data amount information for each communication service and an index for the combination, and FIG. 15B is data amount information for transmission buffers 32a and 32b of the radio link control unit 12 and a combination thereof. It is explanatory drawing which shows an example of the index with respect to.
In the figure, “data amount / guarantee bit rate” (unit: sec) is used as an expression method representing the data amount information of the data stored in the buffer.

FIG. 16 is an explanatory diagram showing service quality (QoS: Quality of Service) for each type of communication service (Class) in order to enable data amount notification in the format of “data amount / guarantee bit rate” (unit: sec). It is. Note that QoS is defined in the standard TS23.107. In the standard document, the guaranteed bit rate is described as GBR (Guaranteed Bit Rate).
When performing a certain communication service, which QoS class (class) is selected or which class of QoS to communicate is determined by the radio resource control unit 16 of the mobile station 1 and the radio resource control of the base station control device 3. This is determined at the time of exchange of setting information described with reference to FIG.
After a class necessary for satisfying QoS is selected for each communication service, the setting information is stored in the service unit 22 of the mobile station 1 and is wirelessly transmitted from the radio resource control unit 16 as necessary. The link control unit 12, the media access control unit 13, and the physical layer control unit 14 are notified.

The data amount information calculation unit 47 of the mobile station 1 includes the data amount information (bit) of each buffer notified from the radio link control unit 12 and the guaranteed bit rate (bit / bit) of the QoS information notified from the radio resource control unit 16. sec) value to calculate the maximum time (sec) required for data transmission.
This calculation result is carried as data amount information (TRbuffer) as a part of the uplink E-DPCCH channel information at the time of uplink radio resource allocation request, and is notified from the mobile station 1 to the base station 2.
The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.

  As apparent from the above, according to the second embodiment, data amount information (or a combination thereof) of untransmitted data for each packet communication service or for each logical channel for packet transmission transmitted by E-DCH data. Information) is notified from the mobile station 1 by base station termination communication separately from the notification of the data amount information using RRC signaling to the base station controller 3. As a result, a plurality of simultaneous communication services in the W-CDMA system can be supported, so that uplink packet transmission control (uplink radio resource control) in the base station 2 is made efficient, and the throughput of the entire cell is increased. The effect of improving is acquired.

In addition, by using an index (Index) when a plurality of pieces of data amount information are combined, the number of bits required for transmission can be reduced, and the effect of reducing the speed reduction (overhead) due to signaling can be obtained.
Further, since the data amount information is transmitted directly from the mobile station 1 to the base station 2 without going through the base station controller 3, high-speed and high-frequency transmission is possible, and the mobile station 1 transmits at the base station 2. Control (uplink radio resource control) is made more efficient, and the effect of improving the throughput of the entire cell can be obtained.

In addition, since the base station 2 is notified of the “maximum time (sec) necessary for transmission of untransmitted data at a certain time point”, the base station 2 directly estimates the maximum delay time of the communication service in a certain mobile station 1. And effective scheduling can be performed.
In addition, since the numerical range and the number of steps (steps) required for the expression can be reduced as compared with the case where the data amount is directly expressed by the number of bits, the number of bits required for wireless transmission can be reduced, and the speed by signaling An effect that the reduction (overhead) can be further reduced is obtained.
In addition, in the interactive class and the background class that often handle packet data, the guaranteed bit rate (Guaranteed bit rate) value is specified, but it is unified for all communication services. Can be handled, and the effect of simplifying the scheduler 116 of the base station 2 can be obtained.

In the second embodiment, the GBR value is defined for Interactive class and Background class for which the GBR value is not defined in the GBR column of the conventional standard.
However, in consideration of the coexistence (backward compatibility) with the mobile station 1 and the base station 2 created in the past version (release) specification of the standard document, a new GBR rule should be added separately for all classes. This is also possible, and is not limited to the second embodiment.

  Further, in the second embodiment, the data amount information calculation unit 47 calculates based on the data amount information of each transmission buffer of the radio link control unit 12, and notifies the base station 2 based on the calculation result. However, as shown in FIG. 17, the extended transmission MAC processing unit 45 of the media access control unit 13 collects the data amount information (Data size) of the transmission DCH buffer 44 and the extended DCH transmission buffer 46, and the data amount information (TRbuffer) ) Can also be used for calculation.

Embodiment 3 FIG.
FIG. 18A is an explanatory diagram showing an example of buffer data amount information for each communication service and an index for the combination. FIG. 18B is data amount information for transmission buffers 32a and 32b of the radio link control unit 12 and a combination thereof. It is explanatory drawing which shows an example of the index with respect to.
In the figure, “data amount / guaranteed bit rate” (unit: sec) is divided by TTI used in communication time units as an information expression method representing the data amount of data stored in the transmission buffer of mobile station 1. Values are used. Here, TTI is a unit time of data transfer from the media access control unit 13 to the physical layer control unit 14, and 2/10/20/40/80 msec or the like is used in the conventional standard document.
Which TTI time length to select when performing a certain communication service is determined between the radio resource control unit 16 of the mobile station 1 and the radio resource control unit 106 of the base station control apparatus 3 with reference to FIG. It is determined when the explained setting information is exchanged.
After the TTI value to be used is selected for each communication service, the setting information is stored in the service unit 22 of the mobile station 1, and from the radio resource control unit 16 to the radio link control unit 12, media access as necessary. This is notified to the control unit 13 and the physical layer control unit 14.

The data amount information calculation unit 47 of the mobile station 1 includes the data amount information (bit) of each buffer notified from the radio link control unit 12, the TTI value notified from the radio resource control unit 16, and the guaranteed bit rate of QoS information. From the (bit / sec) value, the maximum time (TTI unit) required for data transmission is calculated.
This calculation result is carried as data amount information (TRbuffer) as a part of the uplink E-DPCCH channel information at the time of uplink radio resource allocation request, and is notified from the mobile station 1 to the base station 2.

The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.

  As described above, since the numerical value range for display can be reduced by expressing using the processing unit time, the number of bits necessary for the expression can be reduced. In addition, since it can be handled in a unified manner with other communication processes processed in units of TTI, an effect of simplifying the scheduler 116 of the base station 2 can be obtained.

  In the third embodiment, the base station 2 notifies the mobile station 1 of the maximum transmission power margin (Max power margin) and the transmission timing (MAP) as scheduling result information, but it was used in the radio resource allocation request. Transmission control may be performed in the form of transmission permission time control using an expression format similar to the data amount information.

Embodiment 4 FIG.
FIG. 19A is an explanatory diagram showing an example of data amount information of buffers for each communication service and an index for the combination. FIG. 19B is data amount information for transmission buffers 32a and 32b of the radio link control unit 12, and combinations thereof. It is explanatory drawing which shows an example of the index with respect to.
In the figure, “data amount / delay (delay)” (unit: bps (bit per sec)) is used as an information expression method representing the data amount of data stored in the transmission buffer of the mobile station 1. Note that this delay specification is specified as part of the QoS specification in the standard TS23.107. In the standard document TS23.107, this delay is described as “Transfer delay”.
When implementing a certain communication service, which delay (QoS class (class)) is selected or which class of QoS is used for communication is determined by the radio resource control unit 16 of the mobile station 1 and the base station control device 3. It is determined when the setting information described with reference to FIG. 13 is exchanged with the wireless resource control unit 106.
After a class necessary for satisfying QoS is selected for each communication service, the setting information is stored in the service unit 22 of the mobile station 1 and is wirelessly transmitted from the radio resource control unit 16 as necessary. The link control unit 12, the media access control unit 13, and the physical layer control unit 14 are notified.

The data amount information calculation unit 47 of the mobile station 1 stores the data amount information (bit) of each buffer notified from the radio link control unit 12 and the delay value notified from the radio resource control unit 16 in the current buffer. The minimum transmission rate (bit per sec) necessary for transmitting the transmitted data is calculated.
This calculation result is carried as data amount information (TRbuffer) as a part of the uplink E-DPCCH channel information at the time of uplink radio resource allocation request, and is notified from the mobile station 1 to the base station 2.
The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.

FIG. 20 is an explanatory diagram showing service quality (QoS: Quality of Service) for each type of communication service (Class) in order to enable notification of data amount in the format of “data amount / delay” (unit: bit per sec). It is.
In the conventional QoS specification, four types of conversion class, streaming class, interactive class, and background class are specified, but transfer class is defined in the interactive class and the background class that often handle packet data. Not.
In the fourth embodiment, the transfer delay is also defined in the interactive class and the background class.

  As is apparent from the above, according to the fourth embodiment, data amount information (or a combination thereof) of untransmitted data for each packet communication service or for each logical channel for packet transmission transmitted by E-DCH data. Information) is notified from the mobile station 1 by base station termination communication separately from the notification of the data amount information using RRC signaling to the base station controller 3. As a result, a plurality of simultaneous communication services in the W-CDMA system can be supported, so that uplink packet transmission control (uplink radio resource control) in the base station 2 is made efficient, and the throughput of the entire cell is increased. The effect of improving is acquired.

In addition, by using an index (Index) when a plurality of pieces of data amount information are combined, the number of bits required for transmission can be reduced, and the effect of reducing the speed reduction (overhead) due to signaling can be obtained.
Further, since the data amount information is transmitted directly from the mobile station 1 to the base station 2 without going through the base station controller 3, high-speed and high-frequency transmission is possible, and the mobile station 1 transmits at the base station 2. Control (uplink radio resource control) is made more efficient, and the effect of improving the throughput of the entire cell can be obtained.

In addition, since the base station 2 is notified of the “transmission rate (bit per sec) necessary for transmitting data stored in the transmission buffer of the mobile station 1”, the base station 2 Can directly estimate the minimum transmission rate of the communication service, and can achieve an efficient scheduling.
In addition, since the numerical range and the number of steps (steps) required for the expression can be reduced as compared with the case where the data amount is directly expressed by the number of bits, the number of bits required for wireless transmission can be reduced, and the speed by signaling An effect that the reduction (overhead) can be further reduced is obtained.
In addition, in the interactive class and the background class that often handle packet data, the minimum transmission rate (bit per sec) value is specified, so that all communication services are unified. Can be handled, and the effect of simplifying the scheduler 116 of the base station 2 can be obtained.

In the fourth embodiment, the delay is defined for Interactive class and Background class for which the QoS defined delay value is not defined in the conventional standard.
However, in consideration of coexistence (backward compatibility) with the mobile station 1 and the base station 2 created in the specifications of the past version (release) of the standard, a new delay rule should be added separately for all classes. This is also possible, and is not limited to the fourth embodiment.

In the fourth embodiment, the data amount information calculation unit 47 calculates based on the data amount information of each transmission buffer of the radio link control unit 12, and notifies the base station 2 based on the calculation result. However, as shown in FIG. 17, the extended transmission MAC processing unit 45 of the media access control unit 13 collects the data amount information (Data size) of the transmission DCH buffer 44 and the extended DCH transmission buffer 46, and the data amount information (TRbuffer) ) Can also be used for calculation.
In the fourth embodiment, the base station 2 notifies the mobile station 1 of the maximum transmission power margin (Max power margin) and the transmission timing (MAP) as scheduling result information. Transmission control may be performed in the form of transmission permission data transmission rate control using an expression format similar to the data amount information.

Embodiment 5 FIG.
Before describing the contents of the fifth embodiment, TFCI (Transport Format Combination Indicator) in the conventional standard will be described.
The Transport Format Combination is the transmission rate at which each transport channel is multiplexed on the physical data channel (DPDCH) when a plurality of logical channels are set for communication between the mobile station 1 and the base station 2 ( In the standard document, this is called an index (Index) used when notifying a combination of the transport format.

The combinations of transmission speeds that can be taken by each logical channel are determined between the radio resource control unit 16 of the mobile station 1 and the radio resource control unit 106 of the base station control device 3 when the setting information described with reference to FIG. Determined between.
As for the TFC information (TFCI), both the base station 2 and the mobile station 1 have the same information in advance.
Further, in the conventional standard, the uplink transport channel has only one DCH.
When E-DCH and DCH are controlled to be transmitted completely independently, a TFC information similar to that for E-DCH is set independently and notified at the time of data transmission, but is not necessary for the description of the present invention. Not listed because there are. Similarly to DCH, TFC (or TFCI) regulations are added to the standard for E-DCH.

Hereinafter, a case where the mobile station 1 transmits TFC information to the base station 2 will be described. The same applies to transmission in the reverse direction.
The preset TFC information is stored in the service unit 22 of the mobile station 1, and is notified from the radio resource control unit 16 to the radio link control unit 12, the media access control unit 13, and the physical layer control unit 14 as necessary. The
Similarly, the multiplexing setting of the communication service in the logical channel is also set at the time of the above exchange and is stored in the service unit 22, and from the radio resource control unit 16 to the radio link control unit 12 and the media access control as necessary. Notified to the unit 13 and the physical layer control unit 14.

  The media access control unit 13 selects at which transmission rate the data is transmitted at which TFC at a certain transmission time point (described in the standard as TFC selection), and then The amount of data specified by the TFC setting is wirelessly transmitted to the base station 2. The TFC information is transmitted in the form of an index (TFCI) instead of the TFC information itself at the time of wireless transmission. The base station 2 demodulates uplink data based on the received TFC information.

The contents of the fifth embodiment will be described below.
FIG. 21 is an explanatory diagram showing an example of the communication speed value of E-DCH as data amount information (TRbuffer) and its index (TFCI).
In the fifth embodiment, “data amount / TTI unit time” (unit: bps (bit per TTI)) is used as a method for expressing the data amount information, where TTI is 10 ms, and TFCI ≦ 7. , And the area of TFCI> 7 represents the communication speed value extended in the present invention.
Further, the TFC setting for E-DCH set at the time of setting the communication service is also used when a radio resource is requested from the extended transmission MAC processing unit 45, and is transmitted on the uplink E-DPCCH to the base station 2.

Hereinafter, the operation of the mobile station 1 will be described.
The data amount information calculation unit 47 of the mobile station 1 uses the data amount information (bit) of each buffer notified from the radio link control unit 12 and the delay value notified from the radio resource control unit 16 as a radio resource request. Calculate the required transmission rate value.
This calculation result is carried as data amount information (TRbuffer) as a part of the uplink E-DPCCH channel information at the time of uplink radio resource allocation request, and is notified from the mobile station 1 to the base station 2.
The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.

  As apparent from the above, according to the fifth embodiment, data amount information (or a combination thereof) of untransmitted data for each packet communication service or for each logical channel for packet transmission transmitted by E-DCH data. Information) is notified from the mobile station 1 by base station termination communication separately from the notification of the data amount information using RRC signaling to the base station controller 3. As a result, a plurality of simultaneous communication services in the W-CDMA system can be supported, so that uplink packet transmission control (uplink radio resource control) in the base station 2 is made efficient, and the throughput of the entire cell is increased. The effect of improving is acquired.

In addition, by using an index (Index) when a plurality of pieces of data amount information are combined, the number of bits required for transmission can be reduced, and the effect of reducing the speed reduction (overhead) due to signaling can be obtained.
Further, since the data amount information is transmitted directly from the mobile station 1 to the base station 2 without going through the base station controller 3, high-speed and high-frequency transmission is possible, and the mobile station 1 transmits at the base station 2. Control (uplink radio resource control) is made more efficient, and the effect of improving the throughput of the entire cell can be obtained.

In addition, by using the TFC (TFCI) defined for E-DCH as data information representation at the time of uplink radio resource allocation request, it is necessary to separately define the specifications for uplink radio resource allocation request. And the effect that the configuration of the mobile station 1 can be simplified is obtained.
In addition, although it is conceivable that a plurality of E-DCHs are set simultaneously, in that case, it is possible to divert the TFC (or the index) used for the combination of the transport format of each E-DCH. It is.

Embodiment 6 FIG.
FIG. 22 is an explanatory diagram showing an example of the communication speed value of E-DCH as data amount information (TRbuffer) and its index (TFRI).
In the sixth embodiment, it is assumed that the media access control unit 13 and the extended transmission MAC processing unit 45 of the mobile station 1 jointly perform both TFC selection operations.
In the sixth embodiment, when uplink radio resource allocation request is made, TFC (or TFCI) combined with Transport Format used for DCH and E-DCH is transmitted to base station 2 using uplink E-DPCCH. To do.

The data amount information calculation unit 47 of the mobile station 1 is based on the data amount information (bit) of each buffer notified from the radio link control unit 12 and the TFC transmission rate setting value notified from the radio resource control unit 16. Calculate the transmission rate required to transmit data on the E-DCH currently stored in the buffer.
The TFCI corresponding to the transmission rate of the E-DCH obtained as a result of the calculation is obtained, and the TFCI is used as data amount information (TRbuffer), and when the uplink radio resource allocation request is made, as part of the channel information of the uplink E-DPCCH Then, the mobile station 1 notifies the base station 2.
The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.

  As described above, by using the combination with the communication speed of the transport channel that has been used in the conventional standard, there is no need to separately specify specifications for uplink radio resource allocation request, and the mobile station The effect that the structure of 1 can be simplified is acquired.

  In the sixth embodiment, the base station 2 notifies the mobile station 1 of the maximum transmission power margin (Max power margin) and the transmission timing (MAP) as scheduling result information, but it was used in the radio resource allocation request. Transmission control may be performed in the form of transmission permission data transmission rate control using an expression format similar to the data amount information.

Embodiment 7 FIG.
FIG. 23 is an explanatory diagram showing an example of setting the channel amplitude coefficient (β) of the DPDCH during E-DCH transmission as data amount information (TRbuffer) and its index.
In the conventional standard, a channel amplitude coefficient for each uplink channel is defined, and the definition is described in standards TS25.213, TS25.214, and the like. It is assumed that the channel amplitude coefficient of DPDCH when transmitting E-DCH is βeu.
In order to explain the channel amplitude coefficient βeu, FIG. 24 shows an example of multiplexing between the transport channel and the physical channel in the multiplexing unit 54 of the mobile station 1.
The multiplexing between each transport channel and the physical channel is defined in the standard TS25.213, and a similar figure will be described. The conventional standard corresponds to the case where there is no E-DCH and E-DPCCH in FIG.

In the figure, “βeu / d” means that when DCH data and E-DCH data are multiplexed on the same DPDCH by time multiplexing or the like, βeu or βd is taken. Also, “×” is multiplication, “+” and “Σ” are additions, “j” is an imaginary number, “Cc” and the like are spread codes for channel separation, and “I to Q” are axes on the complex plane. “Sdpch, n” represents a mobile station identification code.
In the figure, a plurality of DPDCHs (DPDCH1 to DPDCH6) are not transmitted by a plurality of DPDCH channels, but a single DCH or E-DCH is divided in parallel using a maximum of six spreading codes. Can be sent.

The setting of multiplexing of the transport channel and the physical channel in the physical layer control unit 14 is performed between the radio resource control unit 16 of the mobile station 1 and the radio resource control unit 106 of the base station control device 3 with reference to FIG. It is determined when the explained setting information is exchanged.
The multiplexing setting information is stored in the service unit 22 of the mobile station 1 and is notified from the radio resource control unit 16 to the radio link control unit 12, the media access control unit 13, and the physical layer control unit 14 as necessary.
The data amount information calculation unit 47 of the mobile station 1 calculates the current buffer from the data amount information (bit) of each buffer notified from the radio link control unit 12 and the multiplexing setting information notified from the radio resource control unit 16. The transmission rate necessary to transmit data on the E-DCH stored in the E-DCH is calculated. This transmission rate may be the transmission rate shown in the fourth embodiment.
The channel amplitude coefficient for E-DCH transmission corresponding to the transmission rate of the calculation result is obtained, and the channel amplitude coefficient for E-DCH transmission is used as data amount information (TRbuffer). It is carried as part of the E-DPCCH channel information and notified from the mobile station 1 to the base station 2.

The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.
When the channel amplitude coefficient is wirelessly transmitted, various types of information can be considered as described below, and which information h is to be adopted depends on the implementation of the mobile station 1, but the specifications are defined in the standards TS25.211 and TS25. .331 and the like.
(1) Actual value of channel amplitude coefficient corresponding to required transmission rate (2) Index of channel amplitude coefficient (3) Increase / decrease of channel amplitude coefficient (4) Index of increase / decrease of channel amplitude coefficient (5) Channel amplitude coefficient Ratio (6) Channel amplitude coefficient ratio index

In the W-CDMA system, the data transmission speed is variable, and when the transmission speed increases, the amplitude coefficient β is increased in order to secure the S / N ratio (so-called Eb / No) per transmission bit. To do. That is, the amplitude coefficient β is defined by the transmission speed.
In the W-CDMA system, since all mobile stations 1 use the same radio frequency, when the base station 2 receives a radio frequency signal from a specific mobile station 1, a radio frequency signal transmitted from another mobile station. All of the received power becomes interference noise power.
In addition, the base station 2 needs to schedule transmission from each mobile station 1 while monitoring the interference power and throughput of the entire cell.
Therefore, as described above, instead of the data amount information, the amount of calculation of the scheduler 116 is transmitted by being sent in a format that can be directly converted into interference power (∝ mobile station transmission power) caused by the required data transmission rate. This is advantageous in that the configuration of the scheduler 116 is simplified.

Further, the channel amplitude coefficient βeu corresponds to a numerical value indicating how much transmission speed is required as DPDCH when E-DCH data is loaded on DPDCH, so that there is a problem even if a plurality of communication services are used. Thus, the scheduler 116 can be simplified.
In the seventh embodiment, E-DCH alone is defined, but a combination with βd of the conventional DCH channel can also be transmitted on uplink E-DPCCH 110.

Further, in the seventh embodiment, the channel amplitude coefficient βeu is used only at the time of uplink radio resource allocation request. However, the gain factor setting is used as scheduling result information, and further, the downlink E-DPCCH is used. Instead of the notified maximum transmission power margin (Max Power Margin) information, it is also possible to use the maximum gain factor setting.
Thereby, the multiplexing unit 54 of the mobile station 1 can directly set the channel amplitude coefficient βeu, and an effect that the configuration of the mobile station 1 is simplified can be obtained.

Embodiment 8 FIG.
FIG. 25 is an explanatory diagram illustrating an example of transmission physical channel power offset setting and transmission index during E-DCH transmission as data amount information (TRbuffer).
The data amount information calculation unit 47 of the mobile station 1 uses the data amount information (bit) of each buffer notified from the radio link control unit 12 and the channel multiplexing setting information notified from the radio resource control unit 16 to presently The transmission rate required for transmitting data on the E-DCH stored in the buffer is calculated. This transmission rate may be the transmission rate shown in the fourth embodiment.
The channel amplitude coefficient for E-DCH transmission corresponding to the transmission rate of the calculation result is obtained, the channel amplitude coefficient for E-DCH transmission is converted into power, and the gain factor βc of the uplink DPCCH is converted into power. Then, the power is converted into a power offset value based on the uplink DPCCH power.

The power offset value is used as data amount information (TRbuffer), and is reported as part of the uplink E-DPCCH channel information from the mobile station 1 to the base station 2 when an uplink radio resource allocation request is made.
The scheduler 116 of the base station 2 refers to the data amount information (TRbuffer) and assigns radio resources to each mobile station 1.
Other detailed operations are the same as those described in the first embodiment, and a description thereof will be omitted.

As described above, instead of the data amount information, it is sent in a format that can be directly converted into interference power (∝ mobile station transmission power) caused by the transmission speed necessary for transmitting data, so that the scheduler 116 It is possible to reduce the amount of calculation and to obtain an effect that the configuration of the scheduler 116 is simplified.
In the eighth embodiment, power offset information is used only when an uplink radio resource is requested. However, it is possible to use a power offset as scheduling result information.

Embodiment 9 FIG.
In the ninth embodiment, the scheduler 116 of the base station 2 does not schedule the data transmission timing in the mobile station 1 but schedules the uplink data transmission rate. The internal configurations of the mobile station 1, the base station 2, and the base station control device 3 are the same as those shown in the first embodiment.
FIG. 26 is a transmission flow chart showing a transmission flow of packet data (E-DCH) in the uplink.

In the first embodiment, as shown in FIG. 11, packet data (E-DCH) is mainly transmitted in the following four steps.
(1) The mobile station 1 transmits an uplink radio resource allocation request to the base station 2.
(2) The base station 2 transmits scheduling result information to the mobile station 1.
(3) The mobile station 1 transmits packet data to the base station 2.
(4) The base station 2 transmits the reception determination result to the mobile station 1.
In contrast, in the ninth embodiment, as shown in FIG. 26, the above (1), (2), (3), and (4) are (A) radio resource control flow and (B) data transmission flow. The process flow is divided into

Here, as a radio resource allocation request from the mobile station 1 (the processing of (1) above), a transmission rate increase / decrease request at the time of transmission (denoted as Rate Request in the figure) is transmitted, and a scheduling result notification from the base station 2 As (the processing of (2) above), transmission rate increase / decrease propriety (denoted as Rate Grant in the figure) is transmitted. Accordingly, the transmission timing of data transmission from the mobile station 1 (the process (3) above) is determined by the determination of the mobile station 1 (so-called autonomous transmission control).
Further, when receiving data, the base station 2 notifies the mobile station 1 of the reception determination result (the process (4) above).

Hereinafter, (A) the radio resource control flow will be described with reference to FIG. 26A.
First, the mobile station 1 measures the data amount of untransmitted data (step ST101).
That is, the data of the service 1 (Service 1) and the service 2 (Service 2) generated in the upper layer block unit 11 of the mobile station 1 are transmitted data (TX DATA1, TX DATA2) as the transmission buffer 32a of the radio link control unit 12. 32b, and further output from the transmission buffers 32a and 32b to the data multiplexing unit 43 of the media access control unit 13 as data of transmission logical channels (DTCH1 and DTCH2).

Various mobile station control information related to data transmission of service 1 is stored as control information (RLCont) in the transmission buffer 32c from the service unit 22 of the radio resource control unit 16 through the RRC control unit 21, and further transmitted in the transmission buffer 32c. To the data multiplexing unit 43 of the media access control unit 13 as a control logical channel (DCCH).
At this time, the transmission buffers 32a, 32b, and 32c of the radio link control unit 12 output the data size information (Data size) of the stored data to the buffer monitoring unit 34 periodically or when the data amount changes.
The buffer monitoring unit 34 of the radio link control unit 12 outputs the data size information output from the transmission buffers 32a, 32b, and 32c to the data amount information calculation unit 47 of the media access control unit 13 as data amount information (LOGbuffer).

Next, the mobile station 1 notifies the base station 2 of the uplink E-DPCCH in order to request increase / decrease in the uplink transmission rate (step ST102).
The specific transmission operation of the mobile station 1 in step ST102 is as follows.
When the data amount information calculation unit 47 of the media access control unit 13 receives the data amount information (LOGbuffer) from the buffer monitoring unit 34, based on the data amount information (LOGbuffer), the data amount for each communication service (service 1 and Service 2 data amount) is calculated. Alternatively, the data amount (data amount of DTCH1 and DTCH2) for each logical channel for data transmission among the logical channels allocated to E-DCH is calculated.
Then, the transmission rate required for the scheduler 116 is calculated from the change in the data amount.

There are the following methods for calculating the transmission rate.
(1) Method of using transmission rate obtained in embodiment 4 above (2) Transmission status of DCH data is monitored by PHY control unit 57, and the total transmission rate of E-DCH data exceeds a certain set value Data amount information calculation unit 47 of media access control unit 13 determines the necessity of increase / decrease in transmission rate from the increase / decrease in data amount, and further, the channel amplitude for E-DCH transmission corresponding to the transmission rate A coefficient is obtained, and the channel amplitude coefficient for E-DCH transmission is loaded as data amount information (TRbuffer) as part of the channel information of the uplink E-DPCCH at the time of uplink radio resource allocation request. To the base station 2.
Detailed operations of the media access control unit 13 and the physical layer control unit 14 related to the wireless transmission are the same as those described in the above embodiments, and thus description thereof is omitted.

As the transmission rate increase / decrease request information, when a channel amplitude coefficient is wirelessly transmitted, various methods are conceivable as shown below, and which method is adopted depends on the implementation of the mobile station 1, but the specification is standard Document TS25.211, TS25.331, etc.
(1) Actual value of channel amplitude coefficient corresponding to required transmission rate (2) Index of channel amplitude coefficient (3) Increase / decrease in channel amplitude coefficient (Up / Down)
(4) Index of increase / decrease in channel amplitude coefficient (5) Square value of channel amplitude coefficient (converted to power dimension)
(6) Channel amplitude coefficient square value (power dimension conversion) index (7) Channel amplitude coefficient ratio (8) Channel amplitude coefficient ratio index (9) Channel amplitude coefficient square value (power dimension conversion) Ratio (power offset)
(10) Power offset index

The specific reception operation of the base station 2 in step ST102 is as follows.
When the antenna 105 receives the radio frequency signal transmitted from the mobile station 1, the receiving unit 121 of the physical layer control unit 104 converts the radio frequency signal into a baseband signal using a known technique.
When receiving the baseband signal from the reception unit 121, the demodulation unit 122 of the physical layer control unit 104 demodulates the baseband signal using a known technique, and outputs uplink E-DPCCH data to the separation unit 123.
When receiving the uplink E-DPCCH data from the demodulation unit 122, the separation unit 123 of the physical layer control unit 104 outputs the E-DPCCH data to the scheduler 116 of the media access control unit 103.

Upon receiving E-DPCCH data from the physical layer control unit 104, the scheduler 116 of the media access control unit 103 performs control (scheduling) of uplink radio resources for each mobile station 1 based on the E-DPCCH data. And determine whether or not the transmission rate increase / decrease request from the mobile station 1 is acceptable (step ST103).
As the algorithm used for scheduling, the various methods described in the first embodiment can be applied. In designing the base station 2 and the communication system, for example, the design / Selected.

Next, the base station 2 notifies the scheduling result information to the mobile station 1 through the downlink E-DPCCH (step ST104).
The specific transmission operation of the base station 2 in step ST104 is as follows.
The scheduler 116 of the base station 2 outputs transmission rate increase / decrease (Rate Grant) information as scheduling result information to the multiplexing unit 124 of the physical layer control unit 104 as downlink E-DPCCH data.
The multiplexing unit 124 of the physical layer control unit 104 multiplexes the downlink E-DPCCH data output from the scheduler 116 onto the downlink E-DPCCH by a known technique.
The modulation unit 125 of the physical layer control unit 104 modulates downlink E-DPCCH data multiplexed by the multiplexing unit 124 using a known technique and outputs the modulated data to the transmission unit 126 as a transmission baseband signal.
The transmission unit 126 of the physical layer control unit 104 converts the transmission baseband signal output from the modulation unit 125 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 105 to the mobile station 1.

As the transmission rate increase / decrease availability (Rate Grant) information, which is the scheduling result, various methods are conceivable as shown below, and which method is adopted depends on the implementation of the base station 1, but the definition thereof is the standard. Document TS25.331.
(1) Actual numerical value of channel amplitude coefficient corresponding to transmission rate allowed (2) Index of channel amplitude coefficient (3) Increase / decrease in channel amplitude coefficient (Up / Down)
(4) Index of increase / decrease in channel amplitude coefficient (5) Square value of channel amplitude coefficient (converted to power dimension)
(6) Channel amplitude coefficient square value (power dimension conversion) index (7) Channel amplitude coefficient ratio (8) Channel amplitude coefficient ratio index (9) Channel amplitude coefficient square value (power dimension conversion) Ratio (power offset)
(10) Power offset index

The specific reception operation of the mobile station 1 in step ST104 is as follows.
When the antenna 15 receives the radio frequency signal transmitted from the base station 2, the receiving unit 51 of the physical layer control unit 14 converts the radio frequency signal into a baseband signal by a known technique.
When receiving the baseband signal from the receiving unit 51, the demodulating unit 52 of the physical layer control unit 14 demodulates the baseband signal using a known technique, and outputs downlink E-DPCCH data to the demultiplexing unit 53.
When the separation unit 53 of the physical layer control unit 14 receives downlink E-DPCCH data from the demodulation unit 52, the separation unit 53 uses the E-DPCCH data as transmission rate increase / decrease information as a scheduling result to expand the media access control unit 13. The data is output to the transmission MAC processing unit 45.

When receiving the transmission rate increase / decrease availability information from the separation unit 53, the extended transmission MAC processing unit 45 of the media access control unit 13 refers to the transmission rate increase / decrease availability information and updates the maximum usable transmission rate value.
As described above, the extended transmission MAC processing unit 45 monitors the data amount of the transmission buffer of the mobile station 1, determines the transmission rate increase / decrease request, transmits the transmission rate increase / decrease request to the base station 2, and the scheduler 116 of the base station 2. The transmission rate determination and scheduling result notification processing from the base station 2 are repeatedly executed (steps ST101 to ST104).

Hereinafter, (B) the data transmission flow will be described with reference to FIG. 26B.
First, the mobile station 1 autonomously transmits data within the range of the maximum usable transmission rate that is appropriately updated by the flow of FIG. 26A (step ST105).
The specific transmission operation of the mobile station 1 in step ST105 is as follows.
First, the extended transmission MAC processing unit 45 of the media access control unit 13 determines the maximum transmittable power (Max power) of the mobile station 1 within the range of the latest usable transmission rate updated by the flow of FIG. 26A. Considering this, the transmission data amount (or transmission speed) is determined, and the untransmitted data is output to the extended DCH transmission buffer 46 as E-DCH data.
At this time, the extended transmission MAC processing unit 45 outputs data as long as there is data in the buffer, but the output timing is controlled autonomously.
For example, (1) E-DCH data is prioritized, (2) DCH is prioritized, (3) Data with higher amount of data is prioritized, and which method is adopted depends on the movement. It depends on the implementation of station 1.
On the other hand, the data of the control logical channel (DCCH) is stored in the transmission DCH buffer 44 as DCH data, and is further output from the transmission DCH buffer 44 to the multiplexing unit 54 of the physical layer control unit 14.

The multiplexing unit 54 of the physical layer control unit 14 multiplexes the E-DCH data output from the extended DCH transmission buffer 46 and the DCH data output from the transmission DCH buffer 44 onto the uplink DPDCH by a known technique.
The modulation unit 55 of the physical layer control unit 14 modulates the uplink DPDCH data multiplexed by the multiplexing unit 54 by a known technique and outputs the modulated data to the transmission unit 56 as a transmission baseband signal.
The transmission unit 56 of the physical layer control unit 14 converts the transmission baseband signal output from the modulation unit 55 into a radio frequency signal by a known technique, and transmits the radio frequency signal from the antenna 15 to the base station 2.
Since the operation of the base station 2 in step ST105 is the same as that in step ST5 of FIG. 11, the description thereof is omitted.

Next, the base station 2 notifies the reception determination result (ACK / NACK) of E-DCH data to the mobile station 1 through the downlink E-DPCCH (step ST106).
Since the operations of the base station 2 and the mobile station 1 in step ST106 are the same as those in step ST6 of FIG.
As described above, the extended transmission MAC processing unit 45 monitors the data amount of the transmission buffer of the mobile station 1 and transmits the data from the mobile station 1 to the base station 2 within the range of the transmitted transmission speed that can be used. Then, the process of notifying the reception determination result from the base station 2 is repeatedly executed (steps ST105 to ST106).

Next, the setting of the data amount information transmission cycle from the mobile station 1 to the base station 2 will be described.
FIG. 27 is an explanatory diagram showing transmission cycle timing when uplink radio resource request information is transmitted, and FIG. 28 is a diagram illustrating mobile station 1, base station 2 and base station controller when setting transmission parameters used for transmission. It is a flow figure showing exchange between three.
In FIG. 27, it is assumed that data amount information (D1, D2) corresponding to two communication services is transmitted using E-DPCCH. Transmission is performed in a cycle (K), and the cycle (K) is divided into M pieces.
Of the communication service 1 and the communication service 2, a communication service with a high transmission priority or QoS requirement, or a communication service with a large variation in data amount uses a large number of frames divided into M.

As described above, it is possible to increase the transmission frequency of the data amount information, the mobile station transmission control in the base station 2 can be performed efficiently, and the throughput of the entire cell can be improved.
As in the ninth embodiment, as the information that the mobile station 1 transmits to the base station 2 at the time of requesting the radio resource, interference caused by the transmission speed necessary for transmitting data instead of the data amount information By transmitting information that can be directly converted into power (∝mobile station transmission power), the calculation amount of the scheduler 116 of the base station 2 can be reduced, and the configuration of the scheduler 116 can be simplified.

Also, as information to be transmitted from the base station 2 to the mobile station 1 at the time of scheduling result notification, instead of data amount information, interference power caused by a transmission speed necessary for transmitting data (∝ mobile station transmission power) ), It is possible to reduce the amount of calculation of the extended transmission MAC processing unit 45 of the mobile station 1 and to simplify the configuration of the mobile station 1.
Further, in the ninth embodiment, since the radio resource request cycle and the data transmission cycle are separated, there is no need to schedule data transmission timing, and an effect that the configuration of the scheduler 116 is simplified can be obtained.
In addition, only the transmission rate request is transmitted as information to be transmitted from the mobile station 1 to the base station 2 at the time of the radio resource request. However, as in the first embodiment, the transmission power margin (Power margin) of the mobile station 1 is transmitted. It is also possible to add information and transmit.

In addition, as a reference of the information transmission cycle described in FIG. 27, various methods such as (1) transmitting while there is untransmitted data and (2) transmitting when there is a change in whether there is untransmitted data are possible. And is not limited to the ninth embodiment.
Furthermore, the information transmission cycle specification and cycle setting method described in FIG. 27 can also be used in the first to eighth embodiments.
Moreover, all the above-mentioned data amount information or radio | wireless resource allocation request information can be represented by the index which shows specific information. Further, the base station 2 can allocate radio resources based on the index received from the mobile station 1.
Needless to say, the mobile station 1 includes a terminal that is used fixedly at a specific position.

Claims (2)

  In a communication system including a base station that notifies transmission control information indicating radio resources and a mobile station that transmits data to the base station according to transmission control information notified from the base station, the mobile station includes a plurality of mobile stations. A transmission buffer for storing data of each communication service by transmission service or transmission channel, and monitoring the data for each communication service or transmission channel stored in the transmission buffer, and data for each communication service or transmission channel Data amount information determining means for determining amount information, and data amount information for each communication service or transmission channel determined by the data amount information determining means, together with transmission power margin information indicating a margin of transmission power, to the base station Transmitting means for transmitting, the data amount information received by the base station from the mobile station and transmission power margin information Communication system characterized by comprising by the scheduler to be allocated to the mobile station a radio resource for data transmission to said base station from said mobile station based on.   When data of a plurality of communication services is stored in the transmission buffer for each communication service or transmission channel in the mobile station, the data for each communication service or transmission channel stored in the transmission buffer is monitored and the communication service is monitored. The data amount information for each or each transmission channel is determined, and the data amount information for each communication service or each transmission channel is transmitted to the base station together with transmission power margin information indicating a margin of transmission power, while the base station moves When data amount information for each communication service or transmission channel is received from a station together with transmission power margin information indicating transmission power margin, according to the data amount information and transmission power margin information for each communication service or transmission channel, Determine the radio resource of data transmitted from the mobile station to the base station and indicate the radio resource The signal control information notified to the mobile station, a radio communication method for transmitting data to the base station according to the transmission control information which the mobile station is notified from the base station.

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