JPH114472A - Exchange station equipment in mobile communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the exchange station equipment in a mobile communication system in which high speed data are processed. SOLUTION: This system is provided with a transmission line interface section that is connected to at least one radio base station, a switch section connecting to the transmission line interface section, a DHO section that is connected to the switch section and conducts diversity handover processing to a mobile station, and an external interface section that is connected to the switch section and conducts external interfacing. The transmission line interface section is connected to the radio base station by an ATM. Furthermore, the transmission line interface section processes a short cell. The diversity handover of the DHO section is conducted by selective synthesis of cells. The selective synthesis is conducted based on reliability information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching center device in a mobile communication system for controlling a base station communicating with a mobile station and for interfacing between a radio base station and a switching network such as a fixed station.

[0002]

2. Description of the Related Art In mobile communications, radio base stations have been sped up along with new communication systems such as CDMA due to recent advances in digital communication technology. The fixed station side has also been digitized, and new terminals such as ISDN have been used.

A plurality of base stations for performing wireless communication with a mobile station are connected to each other to control switching between base stations and control handovers, and to perform an interface with a wired or other switching network. An exchange device in a communication system is required.

[0004] Under such technical background, there is a need for a new digital switching system in a mobile communication system capable of controlling between base stations and interfacing with a fixed network. .

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a switching center device in a new mobile communication system capable of handling high-speed digital data.

[0006]

According to a first aspect of the present invention, there is provided a switching system in a mobile communication system, comprising: a transmission line interface unit for connecting to at least one radio base station; A switch unit connected to the transmission line interface unit, a DHO unit connected to the switch unit for performing diversity handover processing for a mobile station, and an external interface connected to the switch unit and interfacing with the outside Section.

According to a second aspect of the present invention, in the first aspect, the transmission line interface unit can be connected to a radio base station by an ATM.

According to a third aspect of the present invention, in the second aspect, the transmission line interface unit can process a short cell.

The invention according to claim 4 is the invention according to claim 2 or 3.
In the above, the diversity handover of the DHO unit can be performed by selecting and combining cells.

According to a fifth aspect of the present invention, in the fourth aspect, the selective combining can be performed based on the reliability information.
The selective combining is performed based on the reliability information.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

1. System Overview 1.1 Product name Wireless control and switching equipment (MCC) in W-CDMA, that is, switching equipment in mobile communication systems.

1.2 Description of Abbreviations The abbreviations are described in Table 1. In Table 1, for example, 3 in the number column indicates that MCC is an abbreviation for the term wireless control and switching device.

[0013]

[Table 1] 1.3 Necessary conditions In addition to satisfying the following requirements, this equipment must be sufficiently designed to be sufficiently operable, maintainable, and reliable, and must be able to withstand transportation and other vibrations. It is. For details, see the contents of the technical meeting,
It may be changed according to the technical conditions of the country and ARIB / TTC. In addition, if it is subject to regulations under Japanese laws and regulations (such as the Radio Law) under conditions other than those described in this specification, it shall be complied with.

2 Structure 2.1 Functional Configuration FIG. 1 shows a configuration of a conventional base station apparatus, and FIG. 2 shows a configuration of the present base station apparatus. In FIG. 2, the functional configuration of the MCC includes a switch unit (SW) and an external interface unit (EX).
T-INT), wired transmission path interface unit (HW-I)
NT), a clock generation unit (CLOCK), a radio control / exchange control unit (MCC-CNT), and the like. Similarly, in FIG. 2, the functional configuration of the MCC includes BSC, MSC, HW-INT, BSC-SW, and MSC.
SC-SW, Ext. Intf. , DHO, CODE
C, ADP Signal processing, CLOCK, and the like. The following content shows the configuration of the functions, and does not limit the hardware configuration.

2.2 Overview of Functions Table 2 shows an overview of the functions of each part of the MCC. In Table 2, for example, it is shown that the BSC mainly has a radio channel control, a control for the DHO unit, and a control function for the CODEC.

[0016]

[Table 2] 3 Operating conditions 3.1 Electrical characteristics (1) Satisfies electrical characteristics in the range of ambient temperature +5 to 40 ° C, normal humidity (65 ± 20%) and rated power supply voltage (100V AC or -48V ± 5V). (2) The circuit can be inserted and removed while the power is on by closing and resetting operations, and the system is not affected by power fluctuations.

3.2 Mechanical Properties The components specified in this specification are free from loosening of screws and falling off of components during vibrations such as transportation and normal handling operations.

3.3 Startup Processing When the power is turned on, the circuit is reset autonomously. At CPU reset, the following processing is performed by the program in ROM. (1) Internal check of CPU (2) Activation of control unit 3.4 Countermeasures for radio interference
Follow the rules. However, the allowable value is specified by the equipment in the center. The specification of the interfering wave generated by this device is M
According to No.2. However, this device is a device in the center.

3.4.1 Related Standards The related standards include the provisions for the operation of voluntary control measures for interference waves generated from information processing equipment and electronic office equipment (November 1993
Revised on January 25, Voluntary Control Council for Interference from Information Processing Equipment)
(Based on CISPR Publ.22).

4 Reliability The MTBF value of this device is targeted at 15000 hours or more. The present apparatus has been carefully designed so that the reliability of the apparatus alone can be obtained.

5 Interface Conditions 5.1.1 Transmission Line Interface (1) Capacity of 6.3M-HWY × 7, 1.5M-HWY × 16 or more, and VPI for each HWY
Can be assigned. (2) There are two ways to connect to the BTS: connection via a dedicated line and direct connection. (3) A line number is assigned for each physical HWY interface. The mounting position of the HWY interface card, the connector position in the interface card, and the line number have a one-to-one correspondence, and this correspondence is fixedly assigned in advance. (4) 1.5M-HWY and 6.3M-HWY can be used together as MCC. However, only one of them can be used for one BTS, and different HWYs can be used for different BTSs.

5.2 ADP 5.2.1 Main Specifications The following describes the ADP external interface (External Interface).
rface), an interface (TE side interface of ADP) when an existing terminal (terminal equipment) is directly connected is specified. Since this interface is directly connected, the protocol on the interface is used. The detailed rules for each service type will be described below.

5.2.2 ADP on the MCC side for audio 5.2.2.1 Protocol (TE side interface) 5.2.2.1.1 C-Plane 5.2.2.1.1.1 ADP on the MCC 5.2.2.1.1.1.1 Layer 3 5.2.2.1.1.1 .1.1 NCU for PSTN (Network Control Un
it) (1) It is equivalent to the control termination function on the network side for a normal telephone (analog 2Wires, DTMF dial) used in a public network in Japan. (2) A timer or number analysis is used to determine the end of the reception number. If a timer is used, the timer value (the waiting time between receiving one number and receiving the next number,
0 [s] to 30 [s] in increments of 1 [s]) can be specified by hardware / software / system parameters. If it is specified by software, it does not affect the operation of MT. (3) Handle only one call at a time. (4) There is a possibility of adding a special state or delay.

5.2.2.1.1.1.2 Layer 1 5.2.2.1.1.1.2.1 Analog 2Wires (1) Analog 2Wires used in ordinary telephones used in public networks in Japan. (2) Supply power of -48 [V]. (3) RJ-11 can be used for the connector.

5.2.2.1.2 U-Plane 5.2.2.1.2.1 ADP on MCC 5.2.2.1.2.1.1 Layer 7 5.2.2.1.2.1.1.1 A / D conversion (PCM) 8 [bit] Resolution of μlaw PCM or higher PCM with

5.2.2.1.2.1.1.2 Echo canceller It is described in G.165 and the like.

5.2.2.1.2.1.2 Layer 1 Same as 5.2.2.1.1.1.2.1.

5.2.3 ADP on modem MCC side 5.2.3.1 Protocol (TE side interface) 5.2.3.1.1 C-Plane 5.2.3.1.1.1 Layer 3 5.2.3.1.1.1.1 AT Conforms to Hayes AT command . Incoming calls handle only automatic replies, not manual replies. 5.2.3.1.1.2 Layer 1 5.2.3.1.1.2.1 RS-232C Refer to JIS standard X501, etc. RS-232C has the following functions.

(1) Asynchronous method (removal of start / stop bits) (2) No procedure (3) Flow control (performed between connected TE and this interface) (4) Transmission speed is 115.2 [kbps] or less Various settings can be made by hardware / software. MT even when using software switches
Does not affect the operation of. Use D-Sub25 pin for the connector.

5.2.3.1.2 U-Plane 5.2.3.1.2.1. Layer 1 5.2.3.1.2.1.1 RS-232C Same as 5.2.3.1.1.2.1.

5.2.4 MDP side ADP for N-ISDN 5.2.4.1 Protocol (TE side interface) 5.2.4.1.1 C-Plane 5.2.4.1.1.1 Layer 3 5.2.4.1.1.1.1 Q.931 (1) It is described in JT.931, etc. (2) Use SDL on the network side. (3) Handle multiple calls at once (maximum number of simultaneous uses = 2 for I.430, maximum number of simultaneous uses = 23 for I.431). (4) Add and modify SDL and timer as shown in FIG. The timer value can be changed by hardware / software. It can be set from 0.1 [s] to 30 [s] in increments of 0.1 [s].
The default value is 4 * 2 + 10-1 = 17 [s]. Even if it is set by software, it does not affect the operation of MT. (5) Add the state of "Call acceptance delayed". (6) Among the information elements, the calling / receiving number and the calling / receiving sub-address are mandatory.

5.2.4.1.1.2 Layer 2 5.2.4.1.1.2.1 Q.921 This is described in JT.Q921 and the like.

5.2.4.1.1.3 Layer 1 5.2.4.1.1.3.1 I.430 / 431 (1) It is described in JT.I430, JT.I431, etc. (2) In I.430, the wiring configuration is P-mP, and phantom power is supplied. (3) In I.431, the interface structure is mH0 + nB + D
(6m + n = 23, 0 <= m <= 3, 0 <= n <= 23). (4) Synchronize clocks at startup or reset (synchronize with MCC clock). (5) ISO-IS8877 can be used for the connector.

5.2.4.1.2 U-Plane 5.2.4.1.2.1 Layer 1 Same as 5.2.4.1.1.3.1.

5.2.5 ADP on MCC side for packet 5.2.5.1 Protocol (TE side interface) 5.2.5.1.1 C-Plane One PVC is set between the TE side interface of ADP and ATM router for easy connection. I do. (1) Bandwidth for the peak speed of layer 1 (same as 5.2.5.1.2.3) is guaranteed. (2) The VPI and VCI are arbitrarily selected by the user within the usable range and set on the ADP TE interface and ATM-LAN side. The setting is made by hardware / software. Even if it is set by software, it does not affect the operation of MT. ADP on MCC side
Now you can specify the VCI value selected for the PVC as appropriate). (3) Not supported by ILMI. (4) Topology protocol is not supported. (5) ATMARP not supported 5.2.5.1.2 U-Plane 5.2.5.1.2.1 Layer 3 RIP is not supported. This can be dealt with by statically setting routing information in the routing table of the existing ATM router connected to the ADP and the address correspondence & routing table of the ADP.

5.2.5.1.2.2 Layer 2 5.2.5.1.2.2.1 RFC 1483 It is described in RFC 1483 and the like. In this system, only the IP packet is used for the LLC header value. Discard if received.

5.2.5.1.2.2.2 AAL5 It is described in I.363 and the like.

5.2.5.1.2.3 Layer 1 5.2.5.1.2.3.1 ATM Described in I.361 and the like.

5.2.5.1.2.3.2 OC-3 (1) SDH STM-1 / SONET STS-3c (OC-3, multimode fiber). For more information, see The ATM Forum's UN
According to I Specification 3.1. For reference, The AT
M Forum-UNI Specification 3.1, I.432, G.707, G.
781, G.782, G.783, G.784, G.957, G.958 and the like. (2) Synchronize clocks at startup or reset (synchronize with MCC clock). (3) Intra-office is applied to the application classification of G.957. (4) An SC type single core optical connector can be used for the connector.

5.4 Network Interface This interface is used for connection with a debugging tool using Tornade. Using 10Mbps Ethernet,
Use 10BASE-T as a connector. Two different connectors can be arranged for BSC and MSC.

6. Function Conditions The functions that this device should have are shown below. Although the functions presented in this specification can be realized by hardware constituting the present apparatus and firmware running on the hardware, the present apparatus targets both the hardware and the firmware. However, the configuration can be such that application software (AP or control unit) that executes some functions such as wireless channel control can be installed. In this device, an interface between devices and the addition of functions to the device can be easily realized.

6.1 Switch Unit 6.1.1 BSC-SW Configuration FIG. 3 shows the configuration of the BSC-SW.

In FIG. 3, the service type to be provided and the CO
According to the connection status of DEC, there are the following two types of switching as switching types. (1) Voice service between mobile station and fixed terminal and CODEC
Is under BSC control: DHT and AAL- to MSC-SW
A Type 5 connection or an ATM-Type 2 connection is connected via a CODEC in accordance with the designation from a macro (connection example 1 in FIG. 3). (2) Mobile station-mobile station communication, non-voice service or CO
When the DEC is not under the control of the BSC: Connect the DHT directly to the AAL-Type5 connection or the ATM-Type2 connection to the MSC-SW (connection example 2 in FIG. 3).

6.1.2 Configuration of MSC-SW Unit FIG. 4 shows the configuration of the MSC-SW unit. The following six types of switching are roughly classified as switching types according to the type of service to be provided and the connection status of the CODEC. (1) Voice service mobile-fixed communication and CODEC is MS
When under the control of C: AAL-Type5 connection or ATM-Type2 connection to MSC-SW and EX-Interfa
The port of ce (inter-network interface) is connected via a CODEC (connection example 2 in FIG. 4). (2) Voice service mobile-fixed communication and CODEC is MS
When under the control of C: AAL-Type5 connection or AAL-Type2 connection to MSC-SW and EX-Interfa
The ce port is directly connected according to the designation from the macro (connection example 1 in FIG. 4). (3) Non-voice service mobile-fixed communication: BSC-SW
AAL-Type 2 connection to the EX-Interface port is connected via the ADP-SPU (connection example 3 in FIG. 4). (4) In the case of mobile-mobile communication of voice and ISDN services: Direct connection is made between two AAL-Type2 connections to two MSC-SWs in the switch (connection example 4 in FIG. 4). (5) Packet service movement-mobile communication: 2
Retransmission processing is performed by two ADP-SPUs. One ADP-SPU is assigned to one mobile station. Since the upper layer protocol is terminated at the packet external interface, the two ADP-SPUs are connected to the packet external interface. (6) Modem service movement-mobile communication: Retransmission processing is performed by two ADP-SPUs. 1 for 1 mobile station
One ADP-SPU is allocated. There is a direct connection between the two ADP-SPUs.

6.1.3 Port The port corresponds to the physical connector of the external interface (EX-Interface) on a one-to-one basis. Therefore, for each service type, the number of physical connectors to be accommodated matches the number of ports.

6.1.3.1 Number of ADP-SPUs and CODECs ADP-SPUs and CODECs are used for mobile-fixed communication.

6.1.3.2 Correspondence between ADP-SPU or CODEC, Port and Ex-Interface There are restrictions on the ADP-SPU or CODEC that can be connected to various ports. FIG. 5 shows a connectable correspondence between a port and an ADP-SPU or CODEC. Further, the Ex-Interface corresponding to the port on a one-to-one basis is also shown.

6.2 Clock Generation Unit The clock from the clock source is multiplied / divided, and the radio frame (10 msec cycle) clock and SFN (0 to 2 ¹⁶ −
1: 2 ¹⁶ radio frame periods) clock is generated. These clocks are used as the only reference clocks in the entire system. The following two types of clock sources can be used. (1) 1.5M-HWY or 6.3M-HWY (2) Free-running clock in MCC (frequency stability: 10 ^-8 ) The clock source can be selected by a hard switch. Even when a plurality of 1.5M-HWYs are used, one HWY as a clock source can be selected by a hardware switch. Switch the generated clock,
It is supplied to the diversity handover unit and the external interface unit. When connecting MCC and BTS directly,
In order to provide a stable operation clock for BTS via HWY, the stable clock generated by MCC
reflect. As for the reference timing generation processing in the BTS, transmission / reception processing of timing cells is performed so that the processing described in BTS Technical Information Document 5.3.9 is enabled. This means that the timing cell is transmitted and received between the MCC and the BTS, and the process of establishing a time synchronization of SFN (SystemFrameNumber) is performed. When HWY is used as the clock source, N
It is possible to absorb the influence of jitter and wander specified in the standard of the TT dedicated line (super digital), and to avoid the occurrence of deterioration of radio characteristics and loss of information.

6.3 Diversity handover section 6.3.1 Overview This function is used for ATs from up to three base stations (transiently four base stations).
This circuit performs selective synthesis on M cells and outputs the result to the external interface. Further, it is a circuit for transmitting ATM cells in parallel to up to three base stations described above. Up to 3
Selective synthesis is performed for ATM cells transmitted at 1.5 Mbps-HWy or 6.3 Mbps-HWY from the base station according to the reliability information, and output to the external interface unit. Multiple data
Selective combining can be performed even when it spans ATM cells. Diversity Handover
Over: DHO) is the DHO between sectors in the cell and the DHO between cells
,are categorized. Each DHO can occur simultaneously. The DHO between sectors in the cell is closed within the BTS and the maximum ratio combining (
It does not participate in MCC or wired transmission at all because it performs distribution (uplink) and distribution (downlink) processing. For inter-cell DHO, multiple wired DHO branches between each base station during handover and MSC (normally up to 3 routes, but 4 routes are set transiently when adding or deleting a branch in 3 wired DHO state) Set. The DHT performs selective synthesis of frames arriving from a plurality of wired DHO branches for an upstream frame, and sends only the selected frame to the external interface unit. For downlink frames, the information received from the external interface
Duplicate and distribute to each route inside. When performing multi-code communication (communication by bundling multiple wireless codes) to realize a wideband service, when selecting and combining, select the same code wireless frame by RCN and RSCN in addition to VPI, VCI and CID Perform synthesis.

6.3.2 Selection Combination Unit and Selection Combination Method The selection combination unit differs for each service and for each physical channel used in the radio section. The selection synthesis method differs depending on three main factors regarding the selection synthesis unit. The three factors are shown below.

Factor 1: The number of short cells / standard cells constituting the selective combining unit When the selective combining unit falls within one short cell / standard cell, the FCL-Header is set for each short cell / standard cell. Selective synthesis is performed for each short cell / standard cell. When the selection synthesis unit is composed of a plurality of short cells / standard cells, the FCL-Header is set only in the first short cell / standard cell of the plurality of short cells / standard cells, and the plurality of short cells / standard cells are set. Selective synthesis is performed for all standard cells. When the selection synthesis unit is composed of multiple short cells, the selection synthesis takes into account that the UUI of the short cell header and the divided short cells are transmitted continuously within the same VCI and CID, and The unit is determined and the selective combining process is performed.

Factor 2: Number of Use Codes (Physical Channels) in Wireless Section For information transmitted with a plurality of spread codes in a DTCH physical channel, selective combining is performed for each spread code.
A plurality of short cells different for each spreading code are configured in the BTS. A plurality of short cells have the same VPI, VCI, and CID, but differ in the third octet RCN of the FCL-Header.
The value of RCN is set in one-to-one correspondence with the code. In the case of multi-code transmission, selective combining is performed between standard cells or short cells having the same VPI, VCI, CID, and RCN. In packet transmission, even if a plurality of codes are used, selective combining is performed in units of CPS-PDU in which information in all codes is combined, so that selective combining is performed in the same manner as a single code. RCN, RSC
N is not used. For the physical channel for UPCH, CP
The number of codes used is irrelevant to the selection synthesis method because selection synthesis is performed in S-SDU units.

Factor 3: Presence or absence of radio frame division within one physical channel in a radio section When performing an unrestricted digital service using an individual physical channel of 256 ksps or more, one radio frame is reduced to 1B (user data transmission rate 64 kbps). The frame is divided into corresponding transmission bit strings (subframes) and transmitted. Selective combining is performed for each subframe. A plurality of short cells, which are different for each subframe, are configured by the BTS. A plurality of short cells have the same VPI, VCI, and CID, but differ in the RSCN at the third octet of the FCL-Header. RSCN
Are set in one-to-one correspondence with subframes. In the case of frame division transmission, VPI, VCI, CID, RCN, RSCN
Selective synthesis is performed between the same short cells.

Table 3 shows the selective combining unit for each service and each physical channel used in the radio section.

[0055]

[Table 3] 6.3.3 Functional configuration Figure 6 shows the functional configuration within the diversity handover trunk.

6.3.3.1 Downlink (external interface →
(Diversity handover trunk → Transmission path interface unit) 6.3.3.1.1 Downlink frame receiving unit This unit receives and accumulates the transmission unit (frame) of user data received from CODEC, ADP-SDU or another DHT. The buffer used for storage takes into account the transmission between DHT and BTS. The reception timing is described in 6.6.
When a frame having user data of all 0 is received, the frame is discarded.

6.3.1.3.2 Downlink frame extraction control section The relevant frame is extracted from the downlink frame reception section according to the offset timing described in 6.6.

6.3.1.3.3 Downstream frame FN assigning section According to the method described in 6.6, FN is assigned based on the reference clock distributed from the clock generating section. For subcells
FN is assigned only to the first cell with reference to UUI.

6.3.1.3.4 Downlink frame duplication unit Duplicates cells for connections connected to the DHT and adds a corresponding connection identifier to each FN.

6.3.1.3.5 Downlink frame sending unit Each wired DH during the diversity handover of the frame
O Transmit to the transmission line interface corresponding to the branch.

6.3.3.2 Uplink (transmission line interface section → diversity handover trunk → external IF section) 6.3.3.2.1 Uplink frame receiving section Arrival from transmission path interface section accommodating each wired DHO branch during diversity handover Received and stored.

6.3.2.3.2 Uplink frame extraction control section The relevant frame is extracted from the uplink frame reception section according to the timing described in 6.6. In the DTCH, the uplink data from the BTS side causes MCC-SI due to cell loss in the ATM section.
When it does not reach the M side, the location of cell loss is specified from the following parameters. FIG. 101 shows a cell loss detection flowchart. It is not necessary to consider cell loss for ACCH, SDCCH, and UPCH.

(Cell Loss Detection Parameter) Frame Number (FN): Used for cell loss detection in all unrestricted services. Radio sub-channel number (RSCN): Used in unrestricted services (unrestricted services of 128k or more) in which two or more units of CRC are assigned within 10 ms. Radio channel number (RCN): Used for unrestricted service realized by multicode. UUI (CPS-User To User I
ndication): Used when the CRC unit of the inner code exceeds the short cell user payload length of 42 oct (when RCN or RSCN is used) or 43 oct (when RCN or RSCN is not used). Cell loss is detected using the above four parameters.

6.3.2.3.3 Upstream frame comparison unit The frame to be compared includes a frame number (FN), RCN, and RSCN.
Are equal to each other. For each frame, selective synthesis is performed with reference to the second octet of the added FCL-Header. In the case of a divided cell, the UCL is referred to, and in consideration of the continuity of the transmission of the divided cell in the VCI and the CID, the subsequent cells are selectively combined by the FCL-Header of the first cell.

FIG. 7 shows the configuration of the second octet of the SAL. The selective combining is determined based on the radio synchronization loss detection (Sync) in the second octet of the FCL-Header, the CRC check result, and the magnitude of the received Eb / I0 value (see Table 4). The priority of the criterion in making the selection is shown below.

Priority 1: Wireless synchronization loss detection . . Select the synchronization maintaining side. Priority 2: CRC check result. . . . Select the CRC OK side. Priority 3: Received Eb / I0. . . . . . . Select the side with the higher reception Eb / I0.

Judging from the priority level 1, if a frame from only one BTS corresponds to the judgment result, that frame is selected. If there are a plurality of candidates of the same judgment result, judgments of priority 2 and 3 are sequentially performed, and a frame from only one BTS is selected. The second octet of the FCL-Header includes a level deterioration judgment display and a BER deterioration judgment display in addition to the description on the left, but it is not used for selective combining. If there are a plurality of candidates even if the priority 3 is determined, any one is selected. Of Eb / I0
The correspondence between the bit and the actual Eb / I0 measurement value is specified by the BSC system parameter.

A selective combining method when a cell loss occurs in any one of the divided short cells will be described below.

(1) When a cell loss occurs in the first short cell having the FCL-Header, all the frames are discarded and selected from the frames from other BTSs according to the priorities 1 to 3.

(2) When a cell loss occurs in a cell other than the first short cell having the FCL-Header, the cell is selected according to the priorities 1 to 3. Cell loss may occur in the selected frame.

6.3.2.3.4 Uplink frame analyzer The level degradation, BER degradation, and CRC-NG at the second octet of the FCL-Header after selective combining are counted and reported periodically.

6.3.2.3.5 Upstream frame transmission section Transmits the frame to VXC / DSC / TIF or the like. CBR (Constant B
If the information from the BTS does not arrive for some reason (out of sync in the radio section, cell loss, etc.) when providing the service, the missing data is supplemented with dummy (all "0").
ADP-SPU connected via BSC-SW and MSC-SW or
Sent to CODEC or connected DHT (for mobile station-mobile station communication).

Regarding upstream frames from a plurality of BTSs involved in diversity handover, CRC of FCL-Header
Even if all are NG, the selected frame is transmitted to the ADP-SPU or CODEC connected via the BSC-SW and MSC-SW, or to the connection destination DHT (in the case of mobile station-mobile station communication).

6.4 ADP section 6.4.1 ADP on the MCC side for voice 6.4.1.1 Outline 6.4.1.1.1 Purpose Used for voice communication through a mobile network.

6.4.1.1.3 Voice Service Mechanism 6.4.1.1.3.1 Configuration FIG. 8 shows the overall configuration. In FIG. 8, ADP indicates a logical protocol converter within one external port number. FIG.
Fig. 1 shows an example of C-Plane connection (moving → fixed / moving).
0 indicates the outline of framing of U-Plane (in the case of 32 [ksps]).

6.4.1.1.3.2 Layer 1 6.4.1.1.3.2.1 Between MS and BTS (air interface) 6.4.1.1.3.2.2 Between BTS and MCC (MATM) In MATM section, peak speed set by ADP Reserve bandwidth for minutes.

6.4.1.1.3.3 Layer 3 or higher For dial-up connection, the operation is as follows. (1) Connection and release from the keypad / analog telephone and release are performed at the will of the user. (2) The peak speed is set before communication (the default value is 8.8 [kbps] for both uplink and downlink).

6.4.1.2 System Configuration 6.4.1.2.1 Node Connection Diagram, Protocol Stack FIGS. 11 to 13 show node connection diagrams in the case of TE direct receipt,
Shows the protocol stack. The protocols described in FIGS. 11 to 13 have a terminated state. Since ADP is a logical entity within one external interface / port number, even if a protocol not described in FIGS.
There is no problem if the protocol stack of FIGS. 11 to 13 is finally satisfied.

6.4.1.2.2 Functional Block Diagram FIGS. 14 and 15 show logical functional blocks of the ADP. FIGS. 14 and 15 show only an outline of the MCC core including some functional blocks.
In addition, the upstream and downstream are represented by the same line, and even if there are multiple incoming connections in the DHT, the line is represented by a single line. Since the ADP is a logical entity corresponding to one external interface / port number, there is no problem even if a protocol or Swtiching function not described in FIGS. 14 and 15 is interposed in the ADP. Although correspondence between each functional block and hardware is not specified, an example of actual hardware creation is shown below for reference.

(1) Cards to be stored in a rack and WS (2) Modification of PBX Items specified in relation to FIGS. 14 and 15 are shown below.

(1) The interface for the MCC core of ADP is the NW side interface, and the interface for the TE is TE
It is classified as the side interface. (2) The external interface unit and the signal processing unit are independent functions and are connected to the BSC-Switch or MSC-Switch. (3) It is desirable that each functional block includes at least the functions shown in 5.3.2, 6.4.1., And 6.4.5 above. (4) External interface section The external interface itself has an external interface
A port number is assigned. (The ports correspond one-to-one to the physical connectors of the external interface unit (the telephone numbers of them).

B. At the exit of the NW side interface, a logical channel number is assigned for each C-Plane and U-Plane. In this channel, a speed corresponding to the peak speed set in both the upper and lower directions is secured. If the signal speed is likely to exceed the speed corresponding to the peak speed, the speed matching is performed by buffering. If the buffer overflows, the signal for the overflow is discarded. The speed corresponding to the peak speed is a CODEC that considers the amount of redundancy reduction by the CODEC
It means the transmission speed before processing. For example, compression ratio 1/2
In the case of the above CODEC, it is necessary to secure a speed twice as high as the peak speed (between the external interface unit and the SPU) corresponding to the peak speed (between the SPU and the MCC core) set in the external interface unit.

(5) Signal Processing Unit The SPU-ID is assigned to the signal processing unit itself. The SPU-ID is assigned for each call. Refer to 6.1.5 for the required number. B. The channel between the SPU and the MCC core corresponds to the channel identified by the external interface port number and the logical channel. In this channel, the peak speed set up and down is ensured. It has a function of adding an error and a delay to each of uplink and downlink of C.U-Plane. i.Used for checking the operation of SPU functions and for demonstrations. ii. In the case of voice / N-ISDN communication, if an error occurs, an error is added to the corresponding bit and transmitted. On the other hand, in the case of modem / packet communication, when an error occurs, the corresponding error control sub-layer frame is discarded. iii. If the error rate is set to 0, it means that error addition does not work. vi. If the delay time is set to 0, it means that the delay addition does not work. 6.4.1.2.3 Others The clock source is shared with the MCC. Each function is activated when the power is turned on, and can always wait for processing. The connectors for TE and public network connection devices are located on the front of the rack.

6.4.1.3 Provided Service In voice communication, the CODEC used in the system is a CODEC (G.729 ') conforming to G.729. However, scalability that can be switched and used can be considered by adding another codec.

6.4.1.4 Performance Target 6.4.1.4.1 CODEC Processing Delay While transmitting information in a certain radio frame unit, the codec processing of the information in the next radio frame unit is completed. ADP is
1 Because it is a logical device corresponding to the external interface port number, if there are multiple ADPs, the traffic that can be handled simultaneously increases according to the number of ADPs. For example, if there are two ADPs, AD
Even if 1 * 2 = 2 traffics are processed at the same time when viewed as a whole P, there is no problem of processing delay.

6.4.1.5 Management ADP can be reset for each configuration aspect related to the ADP (for example, for each card). Use physical hardware / software switches. Using a software switch does not affect MT operation.

6.4.1.6 Protocol (NW side interface) 6.4.1.6.1 CVC is used by default when C-Plane ADP is started.
Details when using SVC are shown below. As a test connection
If PVC is used, 0,0,0 is unused and instead
A PVC is set up (here, the method using the control procedure for releasing the connection is called SVC, and the method not using it is called PVC).

6.4.1.6.1.1 L3b-C 6.1.6.1.1.1 State Transition Diagram 6.4.1.6.1.1.1.1 Policy Modify the user side SDL of Q.2931 (SCS1).

6.4.1.6.1.1.1.2 Specification The basic call states that must be supported at a minimum are as follows (other SDLs are additional states that may or may not be supported). PROCESSQ.2931-Upage1-1
In 7 (AAL / SAAL is read as L2b-C), signals that are not supported in the signal table are ignored if they are not transmitted & received. Each timer value can be changed, and the default value is
Same value as Q.2931.

6.4.1.6.1.1.2 Signal Table 6.4.1.6.1.1.2.1 Policy Modify the signal table of Q.2931 (SCS1).

6.4.1.6.1.1.2.2 Rules 6.4.1.6.1.1.2.2.1 Message Function Definition and Contents Here, in Q.2931, n is the MCC core and u is the NW of the ADP.
Means side interface.

6.4.1.1.6.1.1.2.2.2 Message format and coding of information element A Call number This is applied between the NW side interface of ADP (external interface part). Unique within one control logical channel number within one part interface port number. It is arbitrarily selected at the time of call setup and released at the time of call release. The selectable range is 32 to within one external interface port number.
159 (Decimal, maximum simultaneous use is 1 external interface
1) in the port number.

B Information Elements The basic information elements that must be supported at a minimum are shown below (information elements other than the following are additional information elements that may or may not be supported). The supported information elements are not always present in the message and may be omitted, but if they are present in the message,
Interpreted properly.

(1) Mandatory parameters (including optional parameters that are required depending on the situation) (2) Optional parameters described below i. Connection identifier in the terminating SETUP ii. Calling and calling number, calling and calling subaddress, calling / receiving subaddress, narrowband transmission capability, narrowband high layer compatibility B-1 B-BC Defined as follows. Bearer class: BCOB-C (00011) Clipping non-permissible indication: Clipping non-permissible (01) User plane connection structure: Point point (00) B-2 Connection identifier The control signal from the NW interface of the ADP to the control unit is No information elements are used. NW of ADP from control unit
The following values are used in the control signal to the side interface. It is defined as follows. VP compatible signaling: VP compatible signaling (00) Unchangeable indication: VPCI unchangeable Arbitrary logical channel number (001) Virtual channel identifier: Logical channel number (U-Plan
For e), please refer to the following description. Logical channel number: NW of ADP (external interface unit)
It is applied to the side interface and is unique within one port number.

Table 4 shows the logical channel numbers for U-Plane and
The correspondence of logical channel numbers (and call numbers) for C-Plane is shown.

[0096]

[Table 4] B-3 QoS Parameter Defined as follows. Forward QoS class: No QoS class specified (00000000) Reverse QoS class: No QoS class specified (00000000) B-4 ATM Traffic Descriptor Defined as follows. Forward peak cell rate identifier: CLP = 0 + 1 (10000100) Forward peak cell rate: Specified uplink peak speed [b
ps] Converts and sets the value of ^* . ^** Reverse peak cell rate identifier: CLP = 0 + 1 (10000100) Reverse peak cell rate: Specified downstream peak speed [b
ps] Converts and sets the value of ^* . ^** *: The above peak speed can be changed, and the default value is 8.8 [kbps] for both uplink and downlink (for G.729 ', 8.
8 and 14.8 [kbps]. If a SETUP with a value different from the set value is received, the call is discarded.

**: For example, in the case of x [kbps], x * 1000 /
It is the smallest integer [cell / s] that is not less than (48 * 8).

6.4.1.6.1.2 L2b-C The characteristics do not deteriorate as compared with the case where L2b-C is not used. An example is AAL5 (no retransmission).

6.4.1.6.1.3 L1b-C Table 5 describes the clock and the like of the protocol L1b-C.

[0100]

[Table 5] 6.4.1.6.2 U-Plane 6.4.1.6.2.1 Layer 7 6.4.1.6.2.1.1 Use CODEC conforming to G.729 in CODEC system. See below for details. However, it is desirable to take into account the scalability that can be switched and used by adding another codec. When CODEC starts / stops processing,
After the CODEC connection is specified (for example, U-Plane layer
1 is connected), and the processing is stopped when the CODEC is disconnected.

[Preprocessing] In G.729, CODEC input / output is 16
[Bit] Since it is a linear PCM, when transmitting / receiving signals to / from the external interface, the PCM and the 16
[Bit] Performs linear PCM conversion (for conversion between μlaw PCM and linear PCM, see G.721).

6.4.1.6.2.1.1.1 Error protection (1) Channel coding (transmitting side) In this device, G.729CS-AC is used for the voice coding algorithm.
When ELP is used, the following channel coding is performed to protect the coded data from errors in the channel.
It shall be transmitted.

As an error control method for protecting coded data, an error control method 1 by adding a CRC bit on the transmitting side and performing only error detection by using it, an error control method using a convolutional code in addition to the error detection by using the CRC bit. Two types of error control method 2 combining correction are defined. FIG. 16A shows the processing outline of each method. Method 1 and Method 2
Can be switched using a hardware switch or the like (for each CODEC if there are multiple CODECs).

[Error Control Method 1 (Transmission)] FIG. 16 (B)
Indicates a processing outline. In the method 1, 40 bits to be protected shown in Table 7 are used out of 80 bits of encoded audio data for one frame (10 ms) output from the CS-ACELP, and 8 bits are obtained from the generating polynomial shown in (Equation 1). Find the CRC. Since this is transmitted together with the 40-bit coded audio data that is not protected, the total transmission bit rate as audio data is 8.8 kbps.

[0105]

## EQU1 ## Generator polynomial: G (x) = x ⁸ + x ⁷ + x ⁴ + x ³ + x + 1 (Equation 1) The bit transmission order is as follows. (i) The 40 bits to be protected are transmitted in the order shown in Table 6.4.1.6.-1. Each parameter is transmitted from the MSB. (ii) CRC operation result 8 bits are transmitted in order from high order to low order. (iii) 40 bits that are not protected shall be transmitted in the order shown in Table 7.
Each parameter is transmitted from the MSB. Error Control Method 2 (Transmission) Similarly, FIG. 115 shows an outline of the processing. In the method 2, first, out of the 80 bits of the coded data for one frame (10 ms) output from the CS-ACELP, 40 bits to be protected shown in Table 6 are displayed.
Using the bits, an 8-bit CRC is obtained using the same generator polynomial as in error control method 1. Next, CRC8 is assigned to the 40 bits to be protected.
6 bits of tailbits are added to the added 48 bits, and convolutional encoding is performed (40 bits to be protected are input to the convolutional encoder in the order shown in Table 7. Then, CRC 8 bits
Are input to the convolutional encoder in order from the higher order to the lower order).
The rate of the convolutional encoder is 1/2, the constraint length is 7, and the generator polynomial is shown in (Equation 2) (note that the initial value of the shift register of the convolutional encoder is ALL0). Finally, after the output 108 bits of the convolutional encoder, unprotected coded audio data
40 bits are added in the order shown in Table 7 and transmitted after interleaving (8 × 19) in the frame. Therefore, the total transmission bit rate of the audio data is 14.8 kbps.

[0106]

## EQU00002 ## Generator polynomial: G (D) 1 = 1 + D2 + D3 + D5 + D6 (Equation 2) G (D) 2 = 1 + D2 + D3 + D5 + D6 Table 6 shows a breakdown of bits to be protected in one frame of CS-ACELP data.

[0107]

[Table 6] (2) Communication Channel Decoding (Reception Side) On the reception side, decoding processing of an error detection code or an error correction code corresponding to the error control methods 1 and 2 performed on the transmission side is performed.

Error Control Method 1 (Reception) When the transmitting side is performing the processing of the method 1, the receiving side receives one frame of audio data, and then, based on the data excluding the CRC 8 bits added on the transmitting side, An 8-bit CRC code string is obtained from the generator polynomial of Expression 1). This bit sequence is compared with the CRC bit sequence added on the transmission side, and a frame that does not match is regarded as an error frame.

Error Control Method 2 (Receiving) When the transmitting side is performing the method 2 processing, the receiving side first performs deinterleaving after receiving one frame of audio data. Next, error correction decoding is performed on the convolutionally encoded bit sequence. In order to perform effective error correction decoding, a Viterbi algorithm or a decoding method having equal or higher performance is used. After error correction, the CRC bit strings are compared in the same manner as in error control method 1, and
A frame that does not match is regarded as an error frame.

(3) Error frame interpolation In order to improve the decoded speech quality at the time of a code error, it is desirable to perform an interpolation process on an error frame. If all 0s are detected in the voiced state, there is a possibility of cell loss, etc., so appropriate interpolation processing is performed without performing CRC OK. The specific interpolation processing is optional, but the target quality separately determined by the audio quality after decoding (for the time being, the target value is not specified, but when it is specified, it is specified not by objective evaluation using an evaluation file or the like but by subjective evaluation) ) Is desirable.

6.4.1.6.2.1.1.2 VOX Processing This device has a VOX function of controlling ON / OFF of TCH transmission according to the presence / absence of transmission voice during voice communication with both the base station and the mobile station. Below, G.7298kbps is used as the voice coding algorithm.
The VOX control in the CODEC using CS-ACELP is shown. In addition, in connection with VOX control in CODEC, this device has a DTX function to control ON / OFF of TCH transmission according to the presence or absence of transmission voice during voice communication with both base stations and mobile stations.

(1) Speech / Speech Determination The speech CODEC performs speech / speech determination during speech communication, outputs coded speech data when there is speech, and periodically outputs background noise information defined in (3) when there is no speech. , The output of the encoded data is stopped. A specific sound / silence determination algorithm is optional. However, the sound / silence determination threshold is configured to be changeable.

(2) Transmission / Reception Processing The control of the CODEC at the time of transition from a sound state to a silent state, at the time of a silent state, and at the time of transition from a silent state to a sound state is as follows.

I) Speech state → Silence state When the encoder of the voice CODEC detects silence during the speech state, it notifies the end of TCH transmission by a postamble. En
The coder stops transmitting after transmitting background noise information following the postamble. When the Decoder detects the TCH transmission stop by the postamble, the Decoder starts the background noise generation operation. An interpolation operation is performed on the frame that has received the postamble.

Ii) Silence continuation state The Encoder periodically encodes and transmits background noise during the silence continuation state. When transmitting background noise information, a postamble is transmitted prior to background noise information. The transmission cycle is a parameter, and the default value is 1 second. The value of the transmission cycle can be set by hardware / software / system parameters. The range is 0.5 to 2 [s] and the interval is 0.5 [s]. When setting by software, it is desirable not to affect the operation of MT. The Decoder updates background noise to be generated using background noise information transmitted periodically during the silent continuation state. Except when a pre / postamble is received, all 0s are received, but this is ignored rather than a CRC OK or an error in the preamble.

Iii) Silence state → Speech state When the Encoder detects a speech state during the silence continuation state, it notifies the start of TCH transmission by a preamble. The Encoder starts transmitting normal encoded audio data following the preamble. Decoder receives preamble reception / CRC OK frame (except for all 0s) continuously for n frames or more during silence continuation state (n value can be set by hardware / software, default value is 1, default value when software switch is used) Should not affect the MT operation) to detect the start of TCH transmission, stop background noise generation from the next frame of the preamble, and perform normal speech decoding operation. The background noise generation is stopped when n frames with CRC OK are received, and the normal speech decoding operation is performed after that, including the nth frame.

FIG. 17 shows a unique word pattern of the preamble / postamble signal. FIG. 18 to FIG. 20 show images of transmission timing of the preamble / postamble signal. The preamble / postamble signal is transmitted without performing channel coding. The upper limit of the number of allowable error bits in a unique word is 12 [bits] for error control method 1 and 24 [b] for error control method 2.
its].

(3) Background Noise For background noise information, background noise coded for one frame by an encoder is used. The background noise in the Decoder is generated using the received background noise information, but the specific generation method is arbitrary.

6.4.1.6.2.2 L1b-U Table 7 shows a summary.

[0120]

[Table 7] 6.4.1.6.3 Protocol conversion The NW interface protocol shown in 6.4.1.6.1 and 6.4.1.6.2 and the TE interface protocol shown in 5.2.2.1.1 and 5.2.2.1.2 In each case, the mapping is appropriately performed through the normal system and the quasi-normal system without causing a problem such as a delay or a timer. An example of a normal system protocol conversion in the case of TE direct receipt is shown below. (1) Connection FIGS. 21 to 23 show protocol conversion in the case of connection. (2) Release FIGS. 24 to 26 show protocol conversion in the case of release.

6.4.1.7 Public Network Connection Device A device for connecting the MCC-side ADP to the public network using the UNI of the existing public network is called a public network connection device. The public network connection device corresponds to a logical repeater.

FIG. 27 shows a node connection diagram of the public network connection device and an example of a protocol stack. The protocol described in FIG. 27 has a terminated state. The public network connection device specifies only a logical mechanism corresponding to one port number, and does not specify the correspondence with hardware. Therefore, even if a protocol not shown in FIG. 27 is interposed in the public network connection device. And finally Figure 2
There is no problem if the protocol stack of No. 7 is satisfied.

As shown in FIG. 28, the MC in FIG.
Even if the protocol between the C-side ADP and the public network connection device degenerates and the public network connection device is integrated with the MCC side ADP, there is no problem since the protocol stack of FIG. 27 is finally satisfied.

An example of an actual hardware form will be described below. It is desirable for the system to have a form that can be mounted compactly.

(1) Independent hardware (equivalent to two relay TEs built in) (2) Independent hardware (equivalent to two relay TEs built) ADP (3) Switching the output protocol between TE direct transfer and public network connection In the case of ADP mobile → fixed, the IMUI of fixed TE is specified at the time of call connection with a line that is logically different from the normal communication line. You. On the other hand, in the case of fixed to mobile, the IMUI of the mobile device cannot be specified at the time of call connection, but is statically specified in advance by a hardware switch. Therefore, this statically specified value is set in the called number in the SETUP transmitted from L3b-C of ADP to 3b-C of the control unit.

6.4.1.8 Interconnection with N-ISDN The interconnection between voice communication and N-ISDN "
Various forms can be considered, but the audio signal processing unit (CODEC)
However, it is desirable to connect to the external interface unit for N-ISDN. In this case, in pre-processing of the CODEC, conversion of 16-bit linear PCM and 8-bit μlaw PCM is performed. Also, when an interconnection call is generated in such a form, available CODECs are reduced for the voice service, and the available bandwidth in the external interface port number is reduced for the N-ISDN service. When interconnecting in this manner, the CODEC for voice and N-IS
There are no restrictions on the combination of external interface units for DNs, and any combination is possible as long as there are resources.

However, if this configuration is not possible, a commercially available TA for N-ISDN (in this case, limited to a public network connection) or a PBX is connected to the audio analog 2Wires output line, and voice communication and N -A mode in which interconnection with ISDN may be realized.

6.4.1.9 References The above description in this specification can be better understood by referring to the following references.

(1) Transistor technology SPECIAL No. 8 "Special feature: All about data communication technology", CQ publisher, 1992.

(2) JATE Japan Approvals Institute for Telecommunications
tions Equipment) Home Page address, http: // www.
ssphere.ad.jp/jate/index j.html. (3) Telecommunications Terminal Equipment Inspection Association, 1996 detailed description Telecommunications Terminal Equipment Conformity Certification Technical Standards / Technical Conditions, Telecommunications Association, 1996. (No English translation, no corresponding standard) (4) ITU-T Recommendation G.165 (03/93) -Echo cancellers. (5) ITU-T Recommendation G.165 (03/96) -Coding of speech at
8 kbit / s using conjugate-structure algebraic-code
-excited linear-prediction (CS-ACELP) (6) NTT technical reference materials Technical reference materials for using the telephone network 4th edition, NTT, Telecommunications Association of Japan, luminescence, 1
997. 6.4.2 ADP on MCC side for modem 6.4.2.1 Outline 6.4.2.1.1 Purpose Used for modem communication via mobile network.

6.4.2.1.2 Background For ease of development in providing modem services, MS
The packet service mechanism is used between the ADP on the MCC side and the ADP on the MCC side (equivalent to RS-232C between the TE and the modem). For this reason, even when a mobile originates and arrives at a destination, it always passes through a signal processing unit (Signal Processing Unit), which is a function of the ADP. However, in the case of modem communication, the external interface (External Interface) which is another function of ADP unlike packet communication
Do not intervene. Some of the features not considered in this system are listed below.

(1) Other than an additional AT command before communication.

6.4.2.1.3 Modem Service Mechanism 6.4.2.1.3.1 Configuration FIG. 29 shows the overall configuration. In FIG. 29, ADP is
1 Refers to the logical protocol converter corresponding to the external interface / port number, and its correspondence with hardware is not specified. FIG. 30 shows a connection example of C-Plane (moving → fixed / moving), and FIG. 31 shows an outline of framing of U-Plane.

6.4.2.1.3.2 Layer 1 6.4.2.1.3.2.1 Between MS and BTS (air interface) 6.4.2.1.3.2.2 Between BTS and MCC (MATM) In MATM section, peak speed set by ADP Reserve bandwidth for minutes.

6.4.2.1.3.3 Layer 2 (between ADP on MS side and ADP on MCC side) Table 8 shows the classification of the retransmission function.

[0136]

[Table 8] Table 9 shows the sharing of functions for switching the access method. Switching the access method means switching the physical channel / medium access control method according to the traffic. This system implements both methods 1 and 2.

[0137]

[Table 9] 6.4.2.1.3.4 Layer 3 or higher [Dial-up connection] (1) Prior to communication, manually connect and release using the AT command of TE at will of the user (however, for incoming calls, only automatic response is handled). (2) A peak speed is set before communication. The default value is 28.8 [kbps] for both uplink and downlink.

6.4.2.2 System Configuration 6.4.2.2.1 Node Connection Diagram, Protocol Stack FIGS. 32 to 34 show node connection diagrams in the case of TE direct delivery,
Shows the protocol stack. The protocols described in FIGS. 32 to 34 mean that they have a terminated state. Since the ADP is a logical entity corresponding to one external interface port number, even if a protocol not described in FIGS. There is no problem if you satisfy the stack.

6.4.2.2.2 Functional Block Diagram FIG. 35 shows logical functional blocks of the ADP (MCC co
For re, only the outline including some functional blocks is shown). In FIG. 35, the up and down are represented by the same line. Even if there are multiple incoming connections in the DHT, the line is represented by a single line. Since ADP is a logical entity corresponding to 1 external interface / port number, protocols and switches not described in FIG.
There is no problem even if the ing function intervenes inside the ADP. Although the correspondence between each functional block and hardware is not specified, an example of actual hardware creation is described below.

(1) Cards to be stored on a rack and WS (2) Modification of PBX Items specified in relation to FIG. 35 are shown below.

(1) The interface for the MCC core of ADP is the NW side interface, and the interface for the TE is TE
It is classified as the side interface. (2) The external interface unit and the signal processing unit are independent functions and are connected to the BSC-Switch or MSC-Switch. (3) It is desirable that each functional block includes at least the functions shown in 5.3.3, 6.4.1., And 6.4.5 above. (4) External interface section The external interface itself has an external interface
A port number is assigned. (The ports correspond one-to-one with the physical connectors of the external interface (the telephone numbers of the external connectors).

B. At the exit of the NW side interface, a logical channel number is assigned for each C-Plane and U-Plane. In this channel, a speed corresponding to the peak speed set in both the upper and lower directions is secured. If the signal speed is likely to exceed the speed corresponding to the peak speed, the speed matching is performed by buffering. If the buffer overflows, the signal for the overflow is discarded.

(5) Signal processing section The SPU-ID is assigned to the signal processing unit itself. The SPU-ID is assigned for each call. Refer to 6.1.5 for the required number. B. The channel between the SPU and the MCC core corresponds to the channel identified by the external interface port number and the logical channel. In this channel, the peak speed set up and down is ensured. It is desirable to perform the flow control so that the effective transmission speed in consideration of retransmission does not exceed the speed of the bearer bearer. It has a function of adding an error and a delay to each of uplink and downlink of C.U-Plane. i.Used for checking the operation of SPU functions and for demonstrations. ii. In the case of voice / N-ISDN communication, if an error occurs, an error is added to the corresponding bit and transmitted. On the other hand, in the case of modem / packet communication, when an error occurs, the corresponding error control sub-layer frame is discarded. iii. If the error rate is set to 0, it means that error addition does not work. vi. If the delay time is set to 0, it means that the delay addition does not work. 6.4.2.2.3 Others The clock source is shared with MCC. Each function is activated when the power is turned on, and can always wait for processing. The TE connector is placed on the front of the rack.

6.4.2.3 Provided Services All services that operate on the modem (V.34, V.42, V.42bis). The main application used is personal computer communication.

6.4.2.4 Performance Target 6.4.2.4.1 Throughput This is a throughput in which traffic of about 32 [kbps] is processed by one [book] at the same time and the throughput is not degraded. ADP is
Since it is an ethical device corresponding to one external interface / port number, if there are multiple ADPs, the traffic that can be handled simultaneously increases according to the number of ADPs. For example, when there are two ADPs, the throughput does not deteriorate even if 1 * 2 = 2 [line] traffic is processed at the same time in the entire ADP.

6.4.2.5 Management ADP can be reset for each component related to the ADP (for example, for each card). Use physical hardware / software switches. When using a software switch, it is desirable not to affect the operation of the MT.

6.4.2.6 Protocol (NW side interface) 6.4.2.6.1 CVC is used by default when C-Plane ADP is started.
The following describes the case of using SVC. When using PVC as the test connection, see 6.4.2.6.1.1, 6.4.2.6.1.2,
6.4.2.6.1.3 is unused (here, the method using the control procedure for connection release is called SVC, and the method not using it is called PVC).

6.4.2.6.1.1 L3b-C 6.4.2.6.1.1.1 State transition diagram 6.4.2.6.1.1.1.1 Policy Modify the user side SDL of Q.2931 (SCS1).

6.4.2.6.1.1.1.2 Rules The basic call states that must be supported at a minimum are as follows (other SDLs are additional states that may or may not be supported).

PROCESSQ.2931-Upage1-17 (AAL / SAAL is L2
(Read as bC): Signals that are not supported in the signal table are ignored if they have not been sent or received. Each timer value can be changed, and the default value is the same value as Q.2931.

6.4.2.6.1.1.2 Signal table 6.4.2.6.1.1.2.1 Policy Modify the signal table of Q.2931 (SCS1).

6.4.2.6.1.1.2.2 Specification 6.4.2.6.1.1.2.2.1 Message Function Definition and Content In this specification, n in Q.2931 is MCC core, and u is ADP
Means the NW side interface.

6.4.2.6.1.1.2.2.2 Message format and coding of information elements A Call number This is applied between the NW side interface of ADP (external interface part). Unique to the originator of the call within a part of the interface port number. It is arbitrarily selected at the time of call setup and released at the time of call release. The selectable range is 32 to 159 (10
The maximum number of simultaneous use is 1) within one external interface port number.

B Information Elements The basic information elements that must be supported at a minimum are shown below (information elements other than the following are additional information elements that may or may not be supported).

(1) Mandatory parameters (including parameters that are required depending on the situation even if they are optional) (2) Optional parameters described below i. Connection identifier in the terminating SETUP ii. Calling and calling number, calling and calling subaddress, calling / receiving subaddress, narrowband transmission capability, narrowband high layer compatibility B-1 B-BC Defined as follows. Bearer class: BCOB-C (00011) Clipping not allowed Display: Clipping allowed (00) User plane connection structure: Point point (00) B-2 Connection identifier This is the control signal from the NW interface of the ADP to the control unit. No information elements are used. The following values are used in the control signal from the control unit to the AW NW interface.
It is defined as follows. VP compatible signaling: VP compatible signaling (00) Unchangeable indication: VPCI cannot be changed Any VCI (001) Virtual channel identifier: Logical channel number (U-Pla
For ne), refer to the following description.

(Logical channel number) This is applied between the ADP (external interface unit) and the NW side interface.
Unique within one part interface port number.

Table 10 shows the correspondence between the logical channel numbers for U-Plane and the logical channel numbers (and call numbers) for C-Plane.

[0158]

[Table 10] B-3 QoS Parameter Defined as follows. Forward QoS class: No QoS class specified (00000000) Reverse QoS class: No QoS class specified (00000000) B-4 ATM Traffic Descriptor Defined as follows. Forward peak cell rate identifier: CLP = 0 + 1 (100001
00) Forward peak cell rate: Set by converting the value of the specified uplink peak speed [kbps] ^* . ^** Reverse peak cell rate identifier: CLP = 0 + 1 (100001
00) Reverse peak cell rate: Set by converting the value of the specified downstream peak speed [kbps] ^* . ^** *: The above peak speed can be changed, and the default value is 8.8 [kbps] for both uplink and downlink (for G.729 ', 8.
8 and 14.8 [kbps]. If a SETUP with a value different from the set value is received, the call is discarded.

**: For example, in the case of x [kbps], x * 1000 /
It is the smallest integer [cell / s] that is not less than (48 * 8).

6.4.2.6.1.2.1 L2b-C The characteristics do not deteriorate as compared with the case where L2b-C is not used. An example is AAL5 (no retransmission).

6.4.2.6.1.3 L1b-C Table 11 shows a summary.

[0162]

[Table 11] 6.4.2.6.2 U-Plane 6.4.2.6.2.1 L2b-U Figure 36 describes the framing and the accompanying functions.

6.4.2.6.2.1.1 LLC Sublayer Processing start / stop timing of the LLC sublayer is as follows. (1) The processing is started after the connection of the SPU is specified.
After the U-Plane layer 1 is connected, the network side sends the BGN of the error control sub-sublayer. (2) The processing is stopped when the connection of the SPU is released.
During normal call release, END / ENDAK of the error control sub-sublayer is not used.

6.4.2.6.2.1.1.1 General Frame The frame length of the error control sub-sublayer frame (data + length of the entire trailer) is finally in units of octets, is variable, and sets the maximum length. be able to. The default value is 256 [Bytes]. Regardless of the default value, it is possible to receive a frame having the maximum length that may be specified as hardware or a protocol.

The input / output between the LLC sublayer and the upper layer is St
Characters separated by the art & Stop bit (the removal of the Start & Stop bit is performed in 5.2.3.1.1.2 and 5.2.3.1.2.1)
It is performed in the order of MSB to LSB. Input / output with the lower layer is performed in order from MSB to KSB. In this specification,
The MSB is shown at the top left and the LSB is shown at the top right.

When data received from the upper layer is framed into a layer 3 matched sub-sublayer frame, if data does not accumulate to the maximum frame length, framing is performed after Twait [s] from the start of framing. This value can be set as appropriate, and the default value is 100 [ms].

6.4.2.6.2.1.1.2 Layer 3 Matching Sublayer 6.4.2.6.2.1.1.2.1 Signal Table A SAPI (Service Access Point Identifier) Used for distinguishing different service types from the upper layer. (Eg QoS classification).

000: Not used Other: Reserved B W bits Correspondence between Layer 3 frame and Layer 3 matched sub-layer frame. 00: Continuation & continuation 01: Continuation & ending 10: Start & continuation 11: Start & ending C Code type indicator Indicates the code type when hybrid ARQ is applied. 0: Standard code 1: Inversion code D Reserved Indicates the version of the layer 3 matching sub-layer. 00: Not used Other: Reserved 6.4.2.6.2.1.1.3 Error control sublayer (modified SSCOP) Each parameter for error control can be set. Regarding the default value, the ARQ type is Non-Hybrid, the maximum number of retransmissions is 4 [times], and the SSCOP parameter is an appropriately set value.

6.4.2.6.2.1.1.3.1 State transition diagram A policy Modify the SDL of Q.2110 (SSCOP). Standard Q.2110 (SS
Only the modifications from COP) are shown below.

B Specification Unlike the standard SSCOP, the SSCF is not used. Therefore, it is sufficient that the function of the primitive is realized, and the applicable section and parameters inside the MCC device are not particularly defined. However, a signal corresponding to the release indication primitive of SSCOP 'is notified to L3b-C, and if the notified L3b-C has not completed the call release processing, it is desirable to perform the call release processing.

B-0 Retransmission counter A retransmission counter for SD / SDwithPOLL is added. This counter counts the number of retransmissions independently for each sequence number of SD and SDwithPOLL. In the B-6 SDL diagram described later,
Only the process for SDwithPOLL is described, but the process for SD is also added. Maximum retransmission count is 0 [times]
, The signal format is the same as with retransmission, but means that retransmission does not work. SD
If the number of retransmissions for / SDwithPOLL exceeds the specified maximum number of retransmissions, the resynchronization procedure is executed from the side that has detected this.

B-1 CC holding timer Table 12 shows the CC holding timer. The timer of Table 12 is added. This timer is a type of Keep Alive timer that monitors the period during which no data is sent or received, and releases the call connection (Call Control) when a timeout occurs.
In the case of modem communication, the release is basically performed at the user's will, so a very long value is set.

[0173]

[Table 12] B-2 Addition of SDwithPOLL PDU B-2.1 Outline It is possible to set whether to use "SD" or "SD with POLL" on the transmission side. By default, only SD is used. 1
When transferring two pieces of received data, only one of "SD" and "SD with POLL" must be used. After transmission of the SDwithPOLL PDU, transmission of a new SDwithPOLL PDU is not permitted until the corresponding STAT PDU is received (Max (DA
T) = 0). However, transmission of SD PDUs and POLL PDUs is permitted (to suppress useless transmission of POLL PDUs).
When transmitting SDwithPOLL PDU, Timer POLL and VT (PD) are reset), and this system does not transmit SD PDU (except when Max (DAT) = 0). SDwithPOLL PDUs are retransmitted a finite number of times. When the maximum number of retransmissions is exceeded, a resynchronization procedure is performed.

B-2.2 Primitive AA-IMMDA is used as a primitive corresponding to SDwithPOLL PDU.
Add TA request / indication.

B-2.3 Timer Add Timer SDwithPOLL. It starts when the SDwithPOLL-PDU is sent, and stops when the corresponding STAT-PDU or USTAT-PDU is received. Timer with SD expires SD with POLL
Retransmit the PDU. Timer PO with Timer SDwithPOLL
If any of LL / Timer KEEPALIVE / Timer IDLE is running, stop those timers. When Timer IDLE is stopped, Timer NO RESPONSE is started. Applicable STAT
-Timer SDwithPOLL when receiving PDU or USTAT PDU
And restart Timer NO-RESPONSE. At this time Ti
Time if data is scheduled to be sent because mer POLL is not running
Start rPOLL, and if there is no data to send, Timer KEE
Start PALIVE. The timer value can be set as appropriate.

FIG. 116 shows an example when Timer SDwithPOLL is started and stopped.

B-24 State Variables and Parameters Retransmission Number Counter: VT (DAT) and Maximum Retransmission Number: Max (DAT)
Add.

B-2.5 Buffer Timer In order to simplify the process of retransmitting the SDwithPOLL PDU upon expiration of the SDwithPOLL, an SDwithPOLL retransmission buffer is separately provided. When transmitting the SDwithPOLL PDU, the SDwithPOLL PDU is inserted into both the transmission buffer and the retransmission buffer. Applicable ST
Release the retransmission buffer when receiving AT PDU or USTAT PDU.

B-3. Addition of quick repeat (at the time of non-confirmation type information transfer) function B-3.1 Outline The reception probability is increased by continuously transmitting the UD PDU a plurality of times. If the same UD PDU is received, the UD PDU is discarded. Whether to perform quick repeat or normal non-confirmation type information transfer depends on the request of the primitive.
However, neither is used in this system (no UD PDU is sent).

B-3.2 Primitive AA-QRDATA as a quick repeat request primitive
Add request. Display primitive is AA-UNITDATA
Use indication.

B-3.3 State Variables and Parameters Sequence numbers of UD PDU: VT (US), N (US) and the latest received UD PDU sequence number: VR (US) are added. These state variables and parameters are used to detect duplicates caused by quick repeats. UD PDU transmission count counter: VT (QR) and transmission count: MaxQR are added.

B-4 In the normal release, the management releases the SSCOP without using the SSCOP release procedure.

B-4.1 Primitive MAA-RELEASE Request / indication is added.

B-5 Management Error Display (Addition of Error Code) Table 27 shows the relationship between error types and error codes.

B-6 SDL Diagram FIGS. 102 to 113 show the changes in the SDL diagram. In addition to these changes, Q. "SD.N (S)" of SD.N (S) or SD with POLL.N (S)
Change "SD PDU" to "SD or SD with POLL PDU".

B-7 Transmission / Reception Processing of Inversion Code In this system, it is assumed that the inversion code for hybrid ARQ Type II is not used. Therefore, the accompanying transmission / reception processing is unnecessary.

6.4.2.6.2.1.1.3.2 Signal Table A Policy Correct the signal table of Q.2110 (SSCOP). Standard Q.2110
Only the modifications from (SSCOP) are shown below.

B Rules Table 13 shows the definition and format of the PDU for the modified SSCOP trailer. Similarly, FIGS. 37 through 50 and FIGS. 117 and 118 show the modified SSCOP trailer
Indicates the definition and format of the PDU.

[0189]

[Table 13] 6.4.2.6.2.1.1.3.3 MAC (Media Access Control) switching channel (ch) indicator Indicates the type of the applicable logical channel that is desirable according to the traffic.
Used to assist MAC switching in BTS.

RACH / FACH: 0 UPCH: 1 Table 14 shows a MAC switching channel determination algorithm.
Using the algorithm in Table 14, a channel indicator for MAC switching of a downlink frame is set. Algorithm selection and parameter setting are possible. The default value is 1 [s] for the averaging time, the threshold value is 0.1 for traffic, and the measurement algorithm number is # 1.

[0191]

[Table 14] 6.4.2.6.2.2 L1b-U Table 15 shows the summary.

[0192]

[Table 15] 6.4.2.6.3 Protocol conversion The protocol of the NW interface shown in 6.4.1.6.1 and 6.4.1.6.2 and the protocol of the TE interface shown in 5.2.3.1.1 and 5.2.3.1.2 are used for each call. Is properly mapped through the normal system and the quasi-normal system without any problems caused by delays and timers. An example of a normal system protocol conversion in the case of TE direct receipt is shown below. The ADP on the MCC side identifies the destination of the incoming call based on the routing table, and originates the call from the corresponding interface (NW side, TE side). Note that the routing table can be set using default values.

(1) Connection FIGS. 51 to 53 show protocol conversion in the case of connection. (2) Release FIGS. 54 to 56 show protocol conversion in the case of release.

6.4.2.7 Public Network Connection Device A device for connecting the MCC-side ADP to the public network using the UNI of the existing public network is called a public network connection device. The public network connection device corresponds to a logical repeater.

FIG. 119 shows an example of a node connection diagram of a public network connection device and a protocol stack. Commercial modems are also used for public network connection in modem communication. The control of this modem is performed by the AT command of the in-channel / management PC.
The protocol described in FIG. 119 implies having a terminated state. The public network connection device specifies only a logical mechanism corresponding to one external interface / port number, and does not specify the correspondence with hardware. Therefore, protocols and SWITCH functions not described in FIG. Even if it intervenes in the device,
There is no problem if 19 protocol stacks are satisfied. Also, as shown in FIG. 120, even if the protocol between the MCC-side ADP and the public network connection device in FIG. 119 is degenerated and the public network connection device is integrated with the MCC-side ADP, eventually the FIG.
There is no problem if the protocol stack is satisfied.

An example of an actual hardware form will be described below. It is desirable for the system to have a form that can be mounted compactly.

(1) Independent hardware (equivalent to two relay TE's built in) (2) Independent hardware (equivalent to two relay TE's built in) ADP (3) Switching the output protocol between TE direct delivery and public network connection In the case of ADP mobile → fixed, the telephone number of the fixed TE of the destination arbitrarily specified by the MS is the same as the normal communication line. Are specified at the time of call connection with logically different lines. On the other hand, in the case of fixed to mobile, the telephone number of the destination mobile station cannot be specified at the time of call connection, but is statically specified in advance by a hardware switch / system parameter or the like. Therefore, the SETUP transmitted from L3b-C of ADP to 3b-C of control unit
The statically designated value is set in the destination number in the parentheses.

6.4.2.8 References The above description in this specification can be better understood by referring to the following references.

(1) Transistor technology SPECIAL No. 8 "Special feature: All about data communication technology", CQ publisher, 1992. (2) JIS standard X5101, 1982 (English translation available, EIA /
(TIA-232-C, no change document) (3) ITU-T recommendation v.34 (10/96) -A modem operating at d
ata signaling rates of up to 33600 bit / s for use
on the general switched telephone network and on l
eased point-to-point 2-wire telephone-type circuit
s. (4) ITU-T Recommendation v.42 (03/93) -Error-correcting process
dures for DCEs using asynchronous-to-synchronous c
onversion. (5) ITU-T recommendation v.42bis (01/90) -Data compression pr
ocedures for data circuit terminating equipment (D
CE) using correction procedures. (6) ROCKWELL INTERNATIONAL, "AT Command Reference
MAnual for RC32ACW, RC32ACL, and RC96V24AC Modem Fa
milies ", ORDER NO.833, Revision 1 July 2, 1993 6.4.3 ADP on MCC side for N-ISDN 6.4.3.1 Overview 6.4.3.1.1 Purpose Used for N-ISDN communication through mobile networks.

6.4.3.1.2 Background Some of the functions not considered in this system are as follows. 1. Additional services 2. 2. Call reconnection 3. In-band tone before communication 4. Relay network selection Unsupported signal system 6. 6. Operation of symmetric call 7. Layer 3 message division 9. Lower layer consistency negotiation 9.1 Information transfer rate in one call: H11, 64 [kbps] * 2 Extension communication 6.4.3.1.3 N-ISDN service mechanism 6.4.3.1.3.1 Configuration Figure 57 shows the overall configuration. In FIG. 57, ADP is 1
Refers to the logical protocol converter within the port number. FIG.
8 shows an example of C-Plane connection (moving → fixed / moving)
FIG. 59 shows an outline of framing of U-Plane (in the case of 256 [ksps]).

6.4.3.1.3.2 Layer 1 6.4.3.1.3.2.1 Between MS and BTS (air interface) 6.4.3.1.3.2.2 Between BTS and MCC (MATM) In the MATM section, the peak speed set by ADP Reserve bandwidth for minutes.

6.4.3.1.3.2.3 Perform outer code (FEC) processing between ADP on the MS side and ADP on the MCC side.

6.4.3.1.3.3 Layer 3 or higher Dial-up connection is performed as follows. (1) At the user's will, an incoming / outgoing connection is made and released from the N-ISDN terminal (some terminals perform self-answering incoming calls). (2) Use the value specified in SETUP for the peak speed.

6.4.3.2 System Configuration 6.4.3.2.1 Node Connection Diagram, Protocol Stack FIGS. 60 to 62 show node connection diagrams in the case of direct
The protocol stack is shown in. The protocols described in FIGS. 60 to 62 mean that they have a terminated state. Since ADP is a logical entity corresponding to one external interface port number, FIGS.
Even if a protocol not described in 2 is interposed in the ADP unit, there is no problem as long as the protocol stack of FIGS. 60 to 62 is finally satisfied.

6.3.2.3.2 Functional Block Diagram FIG. 63 shows logical functional blocks of the ADP. MCC co
For re, only the outline including some functional blocks is shown. In FIG. 63, the up and down are represented by the same line. Even if there are multiple incoming connections to the DHT, the line is represented by a single line. Since ADP is a logical entity corresponding to one external interface port number, protocols and switching not described in FIG.
Even if the function intervenes inside the ADP, there is no problem as long as the function finally satisfies the protocol stack of FIG. Although correspondence between each functional block and hardware is not specified, an example of actual hardware will be described below.

(1) Cards to be stored on a rack and WS (2) Modification of PBX Items specified in relation to FIG. 63 are shown below.

(1) The interface for the MCC core of ADP is the NW side interface, and the interface for the TE is TE
It is classified as the side interface. (2) The external interface unit and the signal processing unit are independent functions and are connected to the BSC-Switch or MSC-Switch. (3) It is desirable that each functional block includes at least the functions described in 5.3.3, 6.1.2., And 6.4.5 above. (4) External interface section The external interface itself has an external interface
A port number is assigned. (The ports correspond one-to-one with the physical connectors of the external interface (the telephone numbers of the external connectors).

B. At the exit of the NW side interface, a logical channel number is assigned for each C-Plane and U-Plane. In this channel, a speed corresponding to the peak speed set in both the upper and lower directions is secured. If the signal speed is likely to exceed the speed corresponding to the peak speed, the speed matching is performed by buffering. If the buffer overflows, the signal for the overflow is discarded. Also, when bulk transfer of Ho or the like is performed, it is possible to distinguish and transmit between the external interface unit and the SPU while maintaining the order of a plurality of B-ch.

(5) Signal Processing Unit The SPU-ID is assigned to the signal processing unit itself. The SPU-ID is assigned for each call. Refer to 6.1.5 for the required number. B. The channel between the SPU and the MCC core corresponds to the channel identified by the external interface port number and the logical channel. In this channel, the peak speed set up and down is ensured. The speed corresponding to the peak speed means including the upper length by FEC or the like. For example, when performing rate 1/2 FEC. It is desirable that a speed twice as high as the peak speed set in the external interface unit is secured as a speed corresponding to the peak speed. Also, when bulk transmission of Ho or the like is performed, it is possible to distinguish and transmit between the SPU and the MCCcore while maintaining the order of a plurality of B-ch.

It has a function of adding an error and a delay to each of the uplink and downlink of C.U-Plane. i.Used for checking the operation of SPU functions and for demonstrations. ii. In the case of voice / N-ISDN communication, if an error occurs, an error is added to the corresponding bit and transmitted. On the other hand, in the case of modem / packet communication, when an error occurs, the corresponding error control sub-layer frame is discarded. iii. If the error rate is set to 0, it means that error addition does not work. vi. If the delay time is set to 0, it means that the delay addition does not work. 6.4.3.2.3 Others The clock source is shared with the MCC. Each function is activated when the power is turned on, and can always wait for processing. The connectors for TE and public network connection devices are located on the front of the rack.

6.4.3.3 Service Provided This is the general basic circuit switching service of N-ISDN. However, the maximum speed that can be handled by one call is 384 [kbps] (the maximum speed that 1MS can handle as a whole is 384 [kbps]). The main applications used are telephone (64 [kbps]), H.
320 Video conference (64/128/384 [kbps]), G4FAX (64 [kbp
s]) and N-ISDN routers (64, 128 [kbps]).

6.4.3.4 Performance Goal 6.4.3.4.1 FEC Processing Delay In the case of simultaneously processing 2 [lines] equivalent to 64 [kbps] in I.430, the next Of the information symbol is completed. AD
Since P is a logical device corresponding to one external interface port number, if there are multiple ADPs, the traffic that can be handled simultaneously increases according to the number of ADPs. For example, when there are two ADPs, it is necessary that the problem of processing delay does not occur even when processing traffic equivalent to 2 * 2 = 4 [lines] in 64 [kbps] conversion as a whole ADP.

In the case of simultaneously processing traffic equivalent to 23 [lines] in terms of 64 [kbps] in I.431, the codec decoding of the next information symbol is completed while a certain information symbol is being transmitted. Since ADP is a logical device corresponding to one external interface / port number, if there are multiple ADPs, the traffic that can be handled simultaneously increases according to the number of ADPs. For example AD
If P is 2, 23 * 2 = 4 in terms of 64 [kbps] when viewed as a whole ADP
6 It is necessary that the problem of processing delay does not occur even if traffic equivalent to [books] is processed at the same time.

6.4.3.5 Management A reset can be performed on the five components related to the ADP (for example, five cards). Use physical hardware / software switches. When using a software switch, it is desirable not to affect the operation of the MT.

6.4.3.6 Protocol (NW side interface) 6.4.3.6.1 The SVC is used by default when C-Plane ADP is started.
The following describes the case of using SVC. When using PVC as the test connection, see 6.4.1.6.1.1, 6.4.1.6.1.2,
6.4.1.6.1.3 is unused. Here, the method using the control procedure for releasing the connection is called SVC, and the method not using it is called PVC.

6.4.3.6.1.1 L3b-C 6.4.3.6.1.1.1 State transition diagram 6.4.3.6.1.1.1.1 Policy Modify the user side SDL of Q.2931 (SCS1).

6.4.3.6.1.1.1.2 Specification The basic call states that must be supported at a minimum are as follows (other SDLs are additional states that may or may not be supported).

(1) PROCESSQ.2931-Upage1-17 (AAL / SA
(Al is read as L2b-C.) For signals not supported in the signal table, ignore them if they have not been sent or received. Each timer value can be changed, and the default value is the same value as Q.2931.

6.4.3.6.1.1.2 Signal Table 6.4.3.6.1.1.2.1 Policy Modify the signal table of Q.2931 (SCS1).

6.4.3.6.1.1.2.2 Rules 6.4.3.6.1.1.2.2.1 Message function definition and content Here, n in Q.2931 is MCC core, and u is NW of ADP.
Means side interface.

6.4.3.6.1.1.2.2.2 Message format and coding of information elements A Call number This is applied at the NW side interface of ADP (external interface part). The origination of the call within the part interface port number is unique on the part. It is arbitrarily selected at the time of call setup and released at the time of call release. 32 to 159 within one selectable external interface port number (decimal, maximum simultaneous use is within one external interface port number)
1). In this system, the dummy call number (all 1s) and the global call number (all 0s) are not used (therefore, control signals using these are not used).

B Information Elements The basic information elements that must be supported at a minimum are shown below. Information elements other than the following are additional information elements that may or may not be supported. The supported information elements are not always present in the message and may be omitted, but if present in the message they need to be interpreted appropriately.

(1) Mandatory parameters (including parameters that are required depending on the situation even if they are optional) (2) Optional parameters described below i. Connection identifier in the terminating SETUP ii. Calling and calling number, calling and calling subaddress, calling / receiving subaddress, narrowband transmission capability, narrowband high layer compatibility B-1 B-BC Defined as follows. Bearer class: BCOB-C (00011) Clipping non-permissible indication: Clipping non-permissible (01) User plane connection structure: Point point (00) B-2 Connection identifier This information is used in the control signal from the NW interface of the ADP to the control unit. No elements are used. The following values are used in the control signal from the control unit to the AW NW interface.
It is defined as follows. VP compatible signaling: VP compatible signaling (00) Unchangeable display: VPCI unchangeable: Any VCI (001) Unchangeable display: VPCI unchangeable: VCI unchangeable (000) Virtual channel identifier: The following description (logical channel number ( U-Plane)). [Logical channel number] This is applied to the NW interface of ADP (external interface unit). Unique within one part interface port number. U-Pl
It is necessary to grasp the correspondence between the logical channel number for ane and the logical channel number (and call number) for C-Plane.

[0224]

[Table 16] B-3 QoS Parameter Defined as follows. Forward 1 QoS class: No QoS class specified (00000000) Reverse 2 QoS class: No QoS class specified (00000000) 1: Direction from originating user to destination user 2: Direction from destination user to originating user B-4 ATM traffic description Child Defined as follows. Forward peak cell rate identifier: CLP = 0 + 1 (100001
00) Forward peak cell rate: Specified upstream peak speed ^* Convert and set the value of [bps] ^** . Forward peak cell rate: Converts and sets the value of uplink peak speed [bps] specified by the control unit. Reverse peak cell rate identifier: CLP = 0 + 1 (100001
00) Reverse peak cell rate: Specified downstream peak speed ^* Converts and sets the value of [bps] ^** . Reverse peak cell rate: Converts and sets the downstream peak speed [bps] value specified by the control unit. *: For the above peak speed, use the value specified in SETUP.

**: For example, in the case of x [kbps], x * 1000 / (4
8 * 8) This is the smallest integer [cells / s] that is not smaller. The cell rate value calculated by this formula may be different from the actual cell rate inside the MCC device, but the purpose of sending and receiving this value is to exchange information about the formal peak rate between the control unit and the ADP. It is in.

6.4.3.6.1.2 L2b-C The characteristics do not deteriorate as compared with the case where L2b-C is not used. An example is AAL5 (no retransmission).

6.4.3.6.1.3 L1b-C Table 17 shows connection destinations, clocks, and the like.

[0228]

[Table 17] 6.4.3.6.2 U-Plane 6.4.3.6.2.1 L1b-U 6.4.3.6.2.1.1 FEC sublayer The processing start / stop timing of the FEC sublayer is as follows. (1) The processing is started after the connection of the SPU is specified.
For example, after U-Plane layer 1 is connected. (2) The processing is stopped when the connection of the SPU is released.

6.4.3.6.2.1.1.1 General Frame The unit of framing is a bit unit and has a fixed length.
The input / output unit between the FEC sublayer and the upper layer is a bit in B-ch units, and is performed in order from MSB to LSB. The framing / deframing is performed for each B-ch. Input / output with the lower layer is performed in the order of MSB to LSB. In this specification, the MSB is shown at the upper left and the LSB is shown at the lower right.

6.4.3.6.2.1.1.2 Reed-Solomon code decoding The coding format is a primitive RS code defined on Galois field GF (28).
This is a shortened code RS (36,32) from (255,251).

[0231]

## EQU3 ## Primitive polynomial: p = x ⁸ + x ⁷ + x ² + x + 1 Code generation polynomial: G (x) = (x + α ¹²⁰ ) (x + α ¹²¹ ) (x + α
¹²² ) (x + α ¹²³ ) Outer code processing is performed every 64 kbps regardless of the transmission speed. When the processing is turned off, the transmitting side performs the encoding but the receiving side does not perform the decoding.

6.4.3.6.2.1.1.3 Symbol interleaving Interleaving is performed in 8-bit symbol units. The interleave depth (number of reads) is independent of the wireless transmission speed
Assume 36 symbols.

6.4.3.6.2.1.1.4 Processing Synchronization Data every 80 ms is defined as one outer code processing unit. The outer code processing is performed in synchronization with a frame clock of 10 ms (a frame of an inner code unit). However, the outer code processing unit of 80 ms is not synchronized with the wireless super frame (640 ms). A frame of each inner code unit in the outer code processing unit is assigned a sequence number (S), and numbers 0 to 7 are assigned in transmission order. The outer code processing synchronization is established according to the sequence number.

FIG. 64 shows this outer code processing image.
FIG. 65 shows an initial synchronization establishment procedure, and FIG. 64 shows an outer code synchronization sequence.

The number of protection steps for synchronization is the number of forward protection steps (NF).
And the number of rear protection stages (NR) are also variable. This is specified by a system parameter. The number of synchronization protection stages does not include the case where the CRC added to the SAL information for each inner code unit is NG.

In the asynchronous establishment, all 1s are transmitted to the external interface unit (finally, N-ISDN).

[Synchronization Establishing Operation Condition] In FIG. 65, the initial synchronization establishment condition is that when the data addressed to the Sbit counter is received m times consecutively by CRCOK (from the first Sbit counter to the mth Sbit counter). If they match, it is determined that synchronization has been established (the figure shows an example when m = 2). Since it is not determined that synchronization has been established until an S counter synchronized with CRCOK is received, user data during that time is discarded. Regarding out-of-synchronization, CRCOK indicates that the data of the Sbit counter that does not match the counter of the ADP on the MCC side is repeated n times (CRCN
(Except for G), the synchronization is lost, and resynchronization is established by the same operation as the initial synchronization (see FIG. 66). Data transmission to the wireless side operates separately from the synchronization establishment operation. When user data is received, outer code processing is performed and the data is transmitted to the wireless side. Synchronization with the Sbit counter does not need to be synchronized with the same timing on the ADP on the MCC side.

6.4.3.6.2.1.2 core sublayer Table 18 provides a summary.

[0239]

[Table 18] 6.4.3.6.3 Protocol conversion The protocol of the NW interface shown in 6.4.1.6.1 and 6.4.1.6.2 and the protocol of the TE interface shown in 5.2.4.1.1 and 5.2.4.1. Is properly mapped through the normal system and the quasi-normal system without any problems caused by delays and timers. An example of a normal system protocol conversion in the case of TE direct receipt is shown below.

In the ADP for N-ISDN, the NW side interface
It is necessary to manage the correspondence between call numbers and channel identifiers terminated at Layer 3 of each C-Plane on the TE side interface.

(1) Connection FIGS. 67 to 69 show protocol conversion in the case of connection. (2) Release FIGS. 70 to 72 show protocol conversion in the case of release.

6.4.3.7 Public Network Connection Device A device for connecting the MCC-side ADP to the public network using the UNI of the existing public network is called a public network connection device. The public network connection device corresponds to a logical repeater.

FIG. 73 is a node connection diagram of the public network connection device, showing an example of a protocol stack. The protocol described in FIG. 73 means having a terminated state. The public network connection device defines only a logical mechanism corresponding to one external interface / port number, and does not define the correspondence with hardware.
Even if a protocol not described in (1) intervenes in the public network connection device, there is no problem if the protocol stack of FIG. 73 is finally satisfied. Further, even if the protocol between the MCC side ADP and the public network connection device in FIG. 73 is degenerated as shown in FIG. 74 and the public network connection device is integrated into the MCC side ADP, the protocol stack of FIG. 73 is finally satisfied. There is no problem.

An example of the actual hardware form will be described below. It is desirable for the system to have a form that can be mounted compactly.

(1) Independent hardware (equivalent to two relay TEs built in) (2) Independent hardware (equivalent to two relay TEs built) ADP (3) The output protocol is switched between TE direct connection and public network connection. The ADP clock is synchronized independently on the MCC side and the public network side of the public network connection device. It is necessary to send and receive the data.

In the case of moving → fixed, the IMUI of the fixed TE of the called party
Is specified at the time of call connection using the called number in Q.931. On the other hand, in the case of fixed → mobile, IM of the called mobile device
The UI cannot be specified at the time of call connection, but must be statically specified by a hardware switch in advance.
The calling number includes the IMUI of the public network connection device itself allocated from the public network. Further, since the synchronization of the clock is independently performed on the MCCM side and the public network side of the public network connection device, it is necessary to transmit and receive data via a buffer in the device.

In FIG. 73, each of TE # 1 equivalent and TE # 2 equivalent
In Layer 3 of C-Plane, specific information elements (call number and virtual
Other than the channel identifier), the received information element may be made transparent. Regardless of the definition section of the message, the call number of the information element and the channel identifier are terminated and corresponded. The quantity of this equipment must be the same as the number of ADP for public network connection.

6.4.3.8 References The above description in this specification can be better understood by referring to the following references.

(1) Supervised by Akiyama, co-authored by Ikeda / Matsumoto / Fujioka / Kikuta, ISDN Picture Book, Ohmsha, 1992. (2) Hagiwara, Taiguchi, Hiroike, "In mobile communication systems
A Study on Connection Control Method for N-ISDN Terminals ", 1994-2007 IEICE Fall Univ. B-369. (3) ITU-T Recommendation, I.430, ISDNuser-networkinterface
s, Basicuser-networkinterfaceLayer1specification, 19
95/11. (4) ITU-T Recommendation, I.431, ISDNuser-networkinterface
s, Primaryrateuser-networkinterface ,. (5) ITU-T Recommendation, Q.921, DigitalsubscriberSignallin
gSystemNo.1 (DSS1), ISDNuser-networkinterfacesDatali
nklayerspecification, 1993/3. (6) ITU-T Recommendation, Q.931, DigitalsubscriberSignallin
gSystemNo.1 (DSS1), Networklayer, user-networkmanagem
ent, ISDNuser-networkinterfacelayer3specificationfo
rbasiccontrol, 1995/2. 6.4.4 MDP side ADP for packet 6.4.4.1 Outline 6.4.4.1.1 Purpose This is the communication of IP packet through mobile network.

6.4.1.4.2 Background In order to facilitate development in providing packet services,
Divert the circuit switching mechanism. Therefore, the connection is based on the connection type using a telephone number (after connecting with C-Plane,
This is a dial-up connection that transfers data with Plane) and uses LocationRegister (hereinafter LR) for location management.

As shown in FIG. 75, the following two methods 1 and 2 (FIGS. 75 (a) and (b)) mainly relate to the relationship between an incoming connection to an ADP and an IP packet having a certain destination IP address.
Can be considered.

In consideration of the miniaturization of the MS and the reduction of the connection delay, in order to reduce the number of multi-connections, the method 2 is adopted for the relationship between the incoming connection to the ADP and the IP packet. In this case, ADP has a function equivalent to a router. In this system, ATM is connected to the line between ADP and the Internet.
Therefore, ADP has a function equivalent to an ATM router. In this system, ADP has a function equivalent to an ATM router, but if the function of the ATM router is used as it is, the move-to-move becomes a separate connection. In order to reduce the number of connections and multiplex all IP packets on one connection, when there is a call from the MS ADP, the connection to the MCC ADP must be made once. Some of the functions not considered in this system are listed below.

(1) QoS and traffic control (2) Multicast (3) Security (4) Multiple ISP selection (5) IP roaming (Function equivalent to MobileIP) 6.4.4.1.3 Mechanism of packet service 6.4.4.1.3.1 Configuration FIG. 76 shows the overall configuration. In FIG. 76, ADP is 1
Refers to the logical protocol converter in the port number, and its correspondence with hardware is not specified. FIG. 77 shows the C-Plan
e shows a connection example (moving → fixed / moving), and FIG. 78 shows U-Pl
Here is an overview of ane framing.

6.4.4.1.3.2 Layer 1 6.4.4.1.3.2.1 Between MS and BTS (air interface) 6.4.4.1.3.2.2 Between BTS and MCC (MATM) In MATM section, peak speed set by ADP Reserve bandwidth for minutes.

6.4.4.1.3.3 Layer 2 (MS side ADP-MCC
Table 19 shows the classification of the retransmission function.

[0256]

[Table 19] Table 20 shows the function allocation of switching the access method.
This system implements both methods 1 and 2 in Table 21.

[0257]

[Table 20] 6.4.4.1.3.4 Layer 3 and above Dial-up connection is as follows.

(1) When at least one packet is generated, an outgoing / incoming call is automatically performed. (2) Peak speed is set before communication (default value is 64 [kbps] for both uplink and downlink). (3) Release the call state (CC) if the time during which no packet is transmitted or received exceeds the timer value. I do.

An IP address is statically assigned to the IMUI on a one-to-one basis, and automatic incoming call is possible (IP reachable). 1I
To accommodate multiple IP addresses under MUI, use proxy
The use of a server is also possible. Table 21 outlines the routing method.

[0260]

[Table 21] 6.4.4.2 System Configuration 6.4.4.2.1 Node Connection Diagram, Protocol Stack Figs. 79 to 81 show the node connection diagram for N
Shows the protocol stack. The protocols described in FIGS. 79 to 81 mean that they have a terminated state. ADP is a logical entity within one port number,
Since correspondence with hardware is not specified, there is no problem even if a protocol not described in FIGS. 79 to 81 intervenes inside the ADP as long as the protocol stack of FIGS. 79 to 81 is finally satisfied.

6.4.2.4.2 Functional Block Diagram FIG. 82 shows logical functional blocks of the ADP. MCC core
Is shown only an outline including some functional blocks. FIG. 82 does not specify the correspondence with the hardware.
An example of making actual hardware is given below.

(1) Modification of card accommodated in rack and WS (2) Modification of PBX In FIG. 82, upward and downward are represented by the same line. Also
Even if there are multiple incoming connections in the DHT, the lines are represented by a single line. Each functional block in the ADP needs a total amount of ADP.

6.4.2.4.3 Others The clock source is shared with the MCC. Each function is activated when the power is turned on, and can always wait for processing. The TE connector is placed on the front of the rack.

6.4.4.3 Service Provided This is the general IP application (RSVP and IGMP are not supported). The main applications used are Telnet, FT
There are P, WWW, POP, CU-SeeMe, etc.

6.4.4.4 Performance Target 6.4.4.4.1 Throughput A traffic of about 128 [kbps] is processed 64 times at the same time, and the throughput does not deteriorate. A throughput of about 10 [Mbps] can be obtained.

6.4.4.5 Management ADP whole system reset is performed using a physical hardware switch.

6.4.4.6 Protocol (NW-side interface) 6.4.4.6.1 CVC is used by default when the C-Plane ADP is started.
The specifications when using SVC are described below. PV as connection
If you use C, use 6.4.2.6.4.4, 6.4.2.6.1.2, 6.4.
2.6.1.3 is unused. Here, the method using the control procedure for releasing the connection is called SVC, and the method not using it is called PVC.

6.4.4.6.1.1 L3b-C 6.4.4.6.1.1.1 State transition diagram 6.4.4.6.1.1.1.1 Policy Modify the user side SDL of Q.2931 (SCS1).

6.4.4.6.1.1.1.2 Rules The basic call states that must be supported at a minimum are as follows. SDLs other than those below are additional states that may or may not be supported.

(1) PROCESSQ.2931-Upage1-17 (AAL / SA
(Al is read as L2b-C.) For signals not supported in the signal table, ignore them if they have not been sent or received. Each timer value can be changed, and the default value is the same value as Q.2931.

6.4.4.6.1.1.2 Signal Table 6.4.4.6.1.1.2.1 Policy Modify the signal table of Q.2931 (SCS1).

6.4.4.6.1.1.2.2 Specification 6.4.4.6.1.1.2.2.1 Function definition and content of message Here, n in Q.2931 is MCC core, and u is NW of ADP.
Side interface.

6.4.4.6.1.1.2.2.2 Message format and coding of information elements A Call reference number Applicable between the MCC core and the AW NW interface. It is unique within one control logical channel number within one port number. It is arbitrarily selected at the time of call setup and released at the time of call release. The selectable range is from 32 to 159 (decimal, the maximum number of simultaneous uses is 64).

B Information Elements The basic information elements that must be supported at a minimum are shown below. Information elements other than the following are additional information elements that may or may not be supported.

(1) Mandatory parameters (including parameters that are required depending on the situation even if they are optional) (2) Optional parameters described below i. Connection identifier in the terminating SETUP ii. Calling and calling number, calling and calling subaddress, calling / receiving subaddress, narrowband transmission capability, narrowband high layer compatibility B-1 B-BC Defined as follows. Bearer class: BCOB-C (00011) Clipping non-permissible indication: Clipping permitted (00) User plane connection structure: Point point (00) B-2 Connection identifier Defined as follows. VP compatible signaling: VP compatible signaling (00) Unchangeable indication: VPCI unchangeable Any VCI (001) Virtual channel identifier: Refer to the following description (for logical channel number). [Logical channel number] Applied between MCC core and ADP NW interface. 1 Unique within the port number. Table 22 shows selectable logical channel numbers.

[0276]

[Table 22] B-3 QoS Parameter Defined as follows. Forward QoS class: No QoS class specified (00000000) Reverse QoS class: No QoS class specified (00000000) B-4 ATM Traffic Descriptor Defined as follows.

Forward peak cell rate identifier: CLP =
0 + 1 (10000100) Forward peak cell rate: Set by converting the value of the specified uplink peak speed [kbps] ^* . Reverse peak cell rate identifier: CLP = 0 + 1 (100001
00) Reverse peak cell rate: Set by converting the value of the specified downstream peak speed [kbps] ^* . *: The above peak speed can be changed, and the default value is 64 [kbps] for both uplink and downlink.

6.4.4.6.1.2 L2b-C The characteristics are not deteriorated as compared with the case where L2b-C is not used. An example is AAL5 (no retransmission).

6.4.4.6.1.3 L1b-C Table 23 shows a summary.

[0280]

[Table 23] 6.4.4.6.2 U-Plane 6.4.4.6.2.1 IP / TCP monitoring 6.4.4.6.2.1.1 Routing Refer to 6.4.1.6.3.

6.4.4.6.2.1.2 Header Compression Details of TCP / IP header compression are described in IETF, RFC1144. Header compression is not performed in the default state when ADP is started.

6.4.4.6.2.2 L2b-U FIG. 83 shows the framing and the accompanying functions.

6.4.4.6.2.2.1 LLC sublayer 6.4.4.6.2.2.1.1 General frame This is an octet unit and has a variable length. The maximum length can be set, and the default value is 256 [Bytes]. LLC
The input / output unit between the sublayer and the upper layer is an IP packet. If data does not accumulate up to the maximum frame length during framing, wait for Twait [s] before framing.
This value can be set as appropriate. The default value is 10 [ms].

6.4.4.6.2.2.1.2 Layer 3 Matching Sublayer 6.4.4.6.2.2.1.2.1 Signaling Table A SAPI (Service Access Point Identifier) 000 is unused, and the others are reserved. B Wbits Corresponds to the layer 3 frame and the layer 3 matched sub-layer frame. 0 is continuation and 1 is end. C Code type indicator Indicates the type of code when hybrid ARQ is applied. 0
Is a standard code, and 1 is an inversion code. D Reservation Indicates the version of the layer 3 matching sub-layer. 00 is unused, and others are reserved.

6.4.4.6.2.2.1.3 Error Control Sublayer (Modified SSCOP) Each parameter for error control can be set. For the default value, the ARQ type is Non-Hybrid, the maximum number of retransmissions is 4 [times], and the SSCOP parameter can be set as appropriate. When the maximum number of retransmissions is specified as 0 [times], the signal format is the same as that with retransmission, but it means that retransmission does not function.

6.4.4.6.2.2.1.3.1 State transition diagram A policy Modify the SDL of Q.2110 (SSCOP). B Rules B-1 Timer Table 24 shows the CC holding timer. The timer of Table 25 is added.

[0287]

[Table 24] B-2 Processing of SDwithPOLL After transmitting the SD, the transmitting side performs processing (timer, state variable) when the POLL is transmitted. On the receiving side, after receiving the SD, a process when the POLL is received is performed. B-3 Inversion code transmission / reception processing In this system, the inversion code for hybrid ARQTypeII is not used. Therefore, the accompanying transmission / reception processing is unnecessary.

6.4.4.6.2.2.1.3.2 Signal Table A Policy Modify the signal table of Q.2110 (SSCOP). B Rules Table 25 and FIGS. 84-97 show the PDU definition and format for the modified SSCOP trailer.

[0289]

[Table 25] All reserved fields are coded as "0".
User-user information is basically unused. The modulus of all state variables is 28.

6.4.4.6.2.2.1.3.3 MAC (Media Access
Control) switching channel indicator Indicates the type of the applicable logical channel according to the traffic,
Used to assist MAC switching in BTS. RACH / F
ACH is 00000000 and UPCH is 00000001.

Table 14 shows a MAC switching decision algorithm. Using the algorithm shown in Table 27,
Set MAC indicator ch indicator for downstream frame. The algorithm can be selected and parameters can be set. Default values are initially determined. The hold time is 10 [s], the averaging time is 1 [s], the threshold is common → Occupancy is 0.1 for traffic, and the measurement algorithm number is # 1 And Note that MAC switching margin =
Threshold common → occupied / threshold occupied → common is specified by a system parameter, and its default value is 10.

6.4.4.6.2.3 L1b-U Table 26 shows a summary.

[0293]

[Table 26]

[0294]

[Table 27] 6.4.4.6.3 Protocol conversion The protocol of the NW interface shown in 6.4.1.6.1 and 6.4.1.6.2 and the protocol of the TE interface shown in 5.2.5.1.1 and 5.2.5.1.2 are used for each call. Is properly mapped through the normal system and the quasi-normal system without any problems caused by delays and timers. An example of a normal protocol conversion is shown below. ADP for packets requires IP routing.

(1) Connection FIG. 98 shows a flowchart of the routing operation.

In FIG. 98, the start * is applied to both the TE side interface and the NW side interface. LCI
** indicates a logical channel number (Logical Channel Identifie
r). The table *** indicates an address correspondence & routing table. The address correspondence & routing table is set as appropriate. Default values can be set when ADP is started. The timing of U-Plane connection release in ADP is as follows. Connection: CONN reception (outgoing), CONNACK reception (incoming) Release: REL transmission / reception (2) Release The released logical channel number is excluded from the address correspondence & routing table.

6.4.4.7 Public Network Connection Device This ADP does not use this device.

6.4.4.8 References The above description in this specification can be better understood by referring to the following references.

(1) WRStevens, TCP / IPIllustrated, Vo
l.1,2, AddisonWesley, 1994. (2) DouglasComer, Translated by Murai and Kusumoto, Network Construction by TCP / IP, Vol.1,2,3, Kyoritsu Publishing, 1995. (3) Shimizu and Suzuki, ATM- LAN, Soft Research Center, 1995. (4) Supervised by Ishikawa, Miyake Edition, Picture Network ATM Network Bible, Ohmsha, 1995. (5) Supervised by Kano, edited by Kuribayashi, Easy ATM Network Signaling, Telecommunications Association, 1996. (6) Hagiwara, Nakamura, Ono, Onoe, "Effect of transmission access method on capacity in DS-CDMA", IEICE Technical Report, RCS-96
-71, PP37-43, 1996/8. (7) RFC1577, Classical IP and ARP over ATM. (8) RFC1483, Multiprotocol Encapsulation over ATM
Adaptation Layer 5. (9) RFC1626, Default IP MTU for use over ATM AAL
5. (10) RFC1144, Compressing TCP / IP Headers for Low
-Speed Serial Links. (11) ITU-T Recommendation, Q.2110, B-ISDN ATM ADAPTATION L
AYER-SERVICE SPECIFICCONNECTION ORIENTED PROTOCOL
(SSCOP), 1994. (12) ITU-T Recommendation, Q.2931, BROADBAND INTEGRATED SE
RVICES DIGITAL NETWORK (B-ISDN) -DIGITAL SUBSCRIBER
SIGNALLING NO.2 (DSS2) -USER-NETWORK INTERFACE (U
NI) LAYER 3 SPECIFICATION FOR BASIC CALL / CONNECTIO
N CONTROL, 1995/2. (13) S. Lin and DJ Costost, Jr., Error Control C
oding, Prentice Hall, 1983. (14) L. Kleinrock, Queuing Systems, Vol. 1, 2, Jhon W
iley & Sons, 1976. (15) Nishida, TCP / IP internetworking, Soft Research Center, 1993. 6.5 Transmission line interface section 6.5.1 Physical interface termination function Described in 5.3.1 of BTS technical explanation document I have.

6.5.2 ATM Termination Function This is described in 5.3.2 of BTS Technical Information.

6.5.3 AAL-Type2 Control Function This is described in BTS Technical Description Document 5.3.3.

6.5.4 Uplink signal separation procedure This is the same as BTS technical description document 5.3.4.

6.5.5 Bandwidth guarantee control This is described in 5.3.5 BTS technical explanation document.

6.5.6 AAL-Type5 + SSCOP function This is described in BTS technical explanation document 5.3.6.

6.5.7 Uplink delay addition function A delay can be added to the upstream signal in 0.625 msec steps (for each frame offset), and a delay can be added up to 100 msec. The delay amount can be set by a dip switch.

6.6 Timing Control FIG. 99 shows information transmission timing in the downlink direction.
0 indicates the information transmission timing in the uplink direction.

6.6.1 Downlink Timing Control The CLOCK section of the MCC supplies the CODEC or ADP-SPU with a timing clock for outputting downlink processed user data after signal processing. A transmission frame offset and a frame number offset can be designated as downlink timing control parameters. The value of the transmission frame offset indicates an offset with respect to the MCC reference timing when the transmission of the downlink transmission data to the HWY buffer is completed. Further, the frame number offset is the value of the SAL FN value added to the downlink transmission information.
Indicates the offset from the MCC reference SFN.

[0308] CODEC or ADP- from the CLOCK section of MCC
The timing clock for outputting the downstream user data after signal processing to the SPU has the specified value for the transmission frame offset and frame number offset from the macro, and is further offset by the processing delay in the MCC. Timing.

The offset amount for the processing delay in the MCC is
It is indispensable that the setting is made so as not to cause a failure in the transmission processing, but it is desirable to avoid unnecessarily increasing the transmission delay by overestimating the processing delay amount.

In the BTS, the transmission information received from the ATM transmission line is transmitted in a radio frame of a radio channel having the same frame number as the FN of the SAL included together. However, the transmission timing of the wireless channel is a timing shifted from the reference timing of the BTS by a frame offset + slot offset.

6.6.2 Uplink timing control The BTS receives a radio frame and transmits transmission information to the ATM transmission line as soon as predetermined signal processing such as FEC is completed. The FN of the SAL at that time is a value calculated from the long code phase. After performing the selective combining process of the received transmission information, the MCC delivers the transmission information to the CODEC at the timing specified as appropriate. As the uplink timing control parameters, the received frame offset and frame number
You can specify an offset. The value of the received frame offset represents an offset with respect to the MCC reference timing when the uplink transmission information is delivered to the CODEC.
Further, the frame number offset indicates the offset of the FN value of the SAL added to the uplink transmission information to be delivered to the CODEC with respect to the MCC reference SFN. MCC CL
The OCK block sends the upstream user / code to the CODEC or ADP-SPU.
Provides a timing clock to input data.

6.8 Debug mode maintenance
Tool Same as the description in the BTS technical explanation document.

7 Hardware Configuration Conditions (1) Each card is provided with an ACT lamp and an ALM lamp.
The ACT lamp lights up when the power is turned on or after a reset, without any problem. ALM is turned on when an error is detected.

(2) Hardware with MSC function and BSC
It is configured with hardware different from the hardware on which the functions are mounted. MS
When implementing the functions of C and BSC on the card in the frame,
It is divided at least as cards. Preferably, they are separated as shelves. Even when the functions of MSC and BSC are realized by hardware such as a workstation, each function is mounted on different hardware.

(3) BSC control unit and MSC prepared
It is necessary to have a loader that can load the control unit for the hardware with the BSC function and the hardware with the MSC from a PC card or network.

(4) The system data memory (SDM) function for storing programs, data, and the like read at the time of startup in a nonvolatile memory is divided into SDM for BSC and SDM for MSC. Both SDM functions can be installed on one card.

(5) It is desirable that the BSC-SW and the MSC-SW are configured by different hardware.

(6) The protocol between the BSC-SW and the MSC-SW is not specified. It is desirable to be connected via SW and MSC-SW.

(7) The maintenance tool interface has two RS232C connectors for BSC and MSC.

(8) Notes for maintenance tools
There will be two type personal computers, one for BSC and one for MSC.

(9) The SW connected to the CODEC is set to BSC-SW and MS
Switchable with C-SW. Switching can be performed by a hardware operation such as a hardware switch or a change of a mounting position.

[0322]

As described above, according to the switching center apparatus in the mobile communication system of the present invention, control suitable for high-speed digital communication is performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration of a conventional base station apparatus.

FIG. 2 is a block diagram showing a functional configuration of the base station apparatus.

FIG. 3 is a block diagram illustrating a configuration of a BSC-SW switch unit.

FIG. 4 is a block diagram showing a configuration of an MSC-SW unit.

[Figure 5] ADP-SPU or CODEC, port and Ex-Interfa
It is a figure which shows the connection which can be connected with ce.

FIG. 6 is a diagram showing a functional configuration in a diversity handover trunk.

FIG. 7 is a diagram showing the configuration of the second octet of the SAL.

FIG. 8 is a diagram showing an entire configuration.

FIG. 9 is a diagram showing a connection example (moving → fixed / moving) of C-Plane.

FIG. 10 is a diagram showing an outline of framing of U-Plane (in the case of 32 [ksps]).

FIG. 11 is a block diagram illustrating node connection.

FIG. 12 is a diagram showing a protocol stack of C-Plane.

FIG. 13 is a diagram showing a protocol stack of U-Plane.

FIG. 14 is a functional block diagram of the present apparatus.

FIG. 15 is a functional block diagram of the present apparatus.

FIG. 16 is a block diagram showing an outline of processing.

FIG. 17: Pre-postamble unique word
It is a figure showing a pattern.

FIG. 18 is a diagram illustrating an image of a signal transmission timing of sound and silence.

FIG. 19 is a diagram showing an image of signal transmission timing during silence continuation.

FIG. 20 is a diagram illustrating an image of a signal transmission timing of silence and sound.

FIG. 21 is a diagram showing a protocol conversion of a fixed connection for movement.

FIG. 22 is a diagram showing protocol conversion of a fixed mobile connection.

FIG. 23 is a diagram showing a protocol conversion of a connection of a mobile movement.

FIG. 24 is a diagram showing protocol conversion of release of fixed movement.

FIG. 25 is a diagram showing protocol conversion of release of fixed movement.

FIG. 26 is a diagram showing protocol conversion for release of mobile movement.

FIG. 27 is a diagram showing an example of a node connection diagram and a protocol stack.

FIG. 28 is a diagram showing a case where a protocol is degenerated in FIG. 25;

FIG. 29 is a block diagram showing an overall configuration.

FIG. 30 is a diagram showing a connection example (moving → fixed / moving) of C-Plane.

FIG. 31 is a diagram showing an outline of framing of U-Plane.

FIG. 32 is a block diagram showing a node connection diagram.

FIG. 33 is a diagram showing a protocol stack.

FIG. 34 is a diagram showing a protocol stack.

FIG. 35 is a logical functional block diagram of an ADP.

FIG. 36 is a diagram illustrating framing of L2b-U.

FIG. 37 is a diagram showing a format of a PDU.

FIG. 38 is a diagram showing a format of a PDU.

FIG. 39 is a diagram showing a format of a PDU.

FIG. 40 is a diagram showing a format of a PDU.

FIG. 41 is a diagram showing a format of a PDU.

FIG. 42 is a diagram showing a format of a PDU.

FIG. 43 is a diagram showing a format of a PDU.

FIG. 44 is a diagram showing a format of a PDU.

FIG. 45 is a diagram showing a format of a PDU.

FIG. 46 is a diagram showing a format of a PDU.

FIG. 47 is a diagram showing a format of a PDU.

FIG. 48 is a diagram showing a format of a PDU.

FIG. 49 is a diagram showing a format of a PDU.

FIG. 50 is a diagram showing a format of a PDU.

FIG. 51 is a diagram illustrating protocol conversion of a mobile-fixed connection.

FIG. 52 is a diagram illustrating protocol conversion of a fixed-mobile connection.

FIG. 53 is a diagram showing protocol conversion of a mobile-mobile connection.

FIG. 54 is a diagram illustrating a protocol conversion of mobile-fixed release.

FIG. 55 is a diagram showing protocol conversion of fixed-mobile release.

FIG. 56 is a diagram showing movement-movement release protocol conversion.

FIG. 57 is a block diagram showing an overall configuration.

FIG. 58 is a diagram illustrating a connection example (moving → fixed / moving) of C-Plane.

FIG. 59 is a diagram illustrating an overview of framing of U-Plane (in the case of 256 [ksps]).

FIG. 60 is a block diagram showing a node connection diagram.

FIG. 61 is a diagram showing a protocol stack of C-Plane.

FIG. 62 is a diagram showing a protocol stack of U-Plane.

FIG. 63 is a logical functional block diagram of an ADP.

[Fig. 64] Fig. 64 is a diagram illustrating a case where 64k is not limited in a synchronization method (uplink) between the MS side ADP and the MCC side ADP performed by Sbit.

FIG. 65 is a diagram showing an initial synchronization establishing operation.

FIG. 66 is a diagram illustrating an outer code synchronization sequence.

FIG. 67 is a diagram illustrating protocol conversion of a mobile-fixed connection.

FIG. 68 is a diagram showing protocol conversion of a fixed-mobile connection.

FIG. 69 is a diagram showing protocol conversion of a mobile-mobile connection.

FIG. 70 is a diagram showing a protocol conversion of mobile-fixed release.

FIG. 71 is a diagram showing protocol conversion of fixed-mobile release.

FIG. 72 is a diagram showing movement-movement release protocol conversion.

FIG. 73 is a diagram showing an example of a node connection and a protocol stack.

FIG. 74 is a diagram showing a case where the protocol is degenerated in FIG. 72.

Fig. 75 is a diagram illustrating the relationship between an incoming connection to an ADP and an IP packet.

FIG. 76 is a diagram showing an entire configuration.

FIG. 77 is a diagram illustrating a connection example (moving → fixed / moving) of C-Plane.

FIG. 78 is a diagram showing an outline of framing of U-Plane.

FIG. 79 is a block diagram showing node connections.

FIG. 80 is a diagram showing a protocol stack of C-Plane.

FIG. 81 is a diagram showing a protocol stack of U-Plane.

FIG. 82 is a logical functional block diagram of the ADP.

Fig. 83 is a diagram illustrating framing of L2b-U.

Fig. 84 is a diagram illustrating a format of an SD PDU.

Fig. 85 is a diagram illustrating the format of POLL / SDwithPOL LPDU.

FIG. 86 is a diagram showing a format of a STAT PDU.

Fig. 87 is a diagram illustrating a format of a USTAT PDU.

FIG. 88 is a diagram illustrating the format of a UD / MD PDU.

FIG. 89 is a diagram illustrating a format of a BGN PDU.

FIG. 90 is a diagram showing a format of a BGAK PDU.

Fig. 91 is a diagram illustrating a format of a BGREJ PDU.

FIG. 92 is a diagram showing a format of an END PDU.

Fig. 93 is a diagram illustrating a format of an ENDAK PDU.

FIG. 94 is a diagram showing the format of an RS PDU.

FIG. 95 is a diagram showing the format of an RSAK PDU.

FIG. 96 is a diagram showing the format of an ER PDU.

FIG. 97 is a diagram showing the format of an ERAK PDU.

FIG. 98 is a flowchart showing a routing operation.

FIG. 99 is a diagram showing downlink information transmission timing.

FIG. 100 is a diagram showing uplink information transmission timing.

FIG. 101 is a flowchart showing cell loss detection.

FIG. 102 is a diagram showing a change in the SDL diagram.

FIG. 103 is a diagram showing a change in the SDL diagram.

FIG. 104 is a diagram illustrating a change in the SDL diagram.

Fig. 105 is a diagram illustrating a change in the SDL diagram.

FIG. 106 is a diagram showing a change in the SDL diagram.

FIG. 107 is a diagram showing a change in the SDL diagram.

Fig. 108 is a diagram illustrating a change in the SDL diagram.

Fig. 109 is a diagram illustrating a change in the SDL diagram.

FIG. 110 is a diagram showing a change in the SDL diagram.

FIG. 111 is a diagram illustrating a change in the SDL diagram.

Fig. 112 is a diagram illustrating a change in the SDL diagram.

Fig. 113 is a diagram illustrating a change in the SDL diagram.

FIG. 114 is a diagram in which an SDL and a timer are added and modified.

FIG. 115 is a diagram illustrating an error control method.

Fig. 116 is a diagram illustrating starting and stopping of Timer SDwithPOLL.

Fig. 117 is a diagram illustrating a format of a PDU.

Fig. 118 is a diagram illustrating a format of a PDU.

FIG. 119 is a diagram showing an example of node connection and a protocol stack.

FIG. 120 is a diagram showing a case where the protocol is reduced in FIG. 119;

Continuing on the front page (72) Inventor Takaaki Sato 2-10-1 Toranomon, Minato-ku, Tokyo Inside NTT Mobile Communication Network Corporation (72) Inventor Hirofumi Takagi 2-1-1 Toranomon, Minato-ku, Tokyo No. NTT Mobile Communication Network Co., Ltd. (72) Moto Tamura Inventor NTT Mobile Communication Network Co., Ltd. 2-1-1 Toranomon, Minato-ku, Tokyo (72) Inventor Masatomo Nakano Tokyo (72) Inventor Hiroshi Kawakami 2-10-1, Toranomon, Minato-ku, Tokyo Inventor Hiroshi Kawakami Within NTT Mobile Communication Network, 2-1-1, Toranomon, Minato-ku, Tokyo (72) Inventor Hiroki Morikawa 2-10-1 Toranomon, Minato-ku, Tokyo Inside NTT Mobile Communication Network Co., Ltd.

Claims (5)

[Claims] 1. An exchange device in a mobile communication system, comprising: a transmission line interface unit for connecting to at least one radio base station; a switch unit connected to the transmission line interface unit; An exchange device in a mobile communication system, comprising: a DHO unit that performs diversity handover processing for a mobile station; and an external interface unit that is connected to the switch unit and performs an interface with the outside. 2. The switching center device in a mobile communication system according to claim 1, wherein said transmission line interface unit is connected to a radio base station by an ATM. 3. The switching center apparatus in a mobile communication system according to claim 2, wherein said transmission path interface unit also processes a short cell. 4. The switching center apparatus in a mobile communication system according to claim 2, wherein the diversity handover of said DHO unit is performed by selective combining of cells. 5. The switching center apparatus in a mobile communication system according to claim 4, wherein the selective combining is performed based on reliability information.