JP2001320417A - Transmission control system and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission control system that takes precedence of transmission of a logical channel with high priority over others and distributingly transmits the logical channel without delaying transmission of a transfer channel. SOLUTION: A termination function block 2 for logical channel is provided with a distribution means 30 that outputs variable length packets by the priority of the variable length packet, a plurality of division means 31, 32, 33, 34 by the priority that receive the variable length packets outputted from the distribution means, divide them into fixed length packets, and output them, a plurality of queues 41, 42, 43, 44 by the priority that queue the fixed length packets, and a multiplexer means 9 that reads the fixed length queued in the plurality of queues in the order of higher priority and provides an output of them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission control method for transmitting a variable-length packet having any one of a plurality of priorities on one channel while maintaining the priority, and more particularly, to a radio control system. In the network control device, transmission control for transmitting a variable-length packet having a priority of any one of a plurality of priorities, which transmits a logical channel, on one physical channel while maintaining the priority. About the method.

[0002]

2. Description of the Related Art In a network device such as a radio network controller of a mobile communication system, a logical channel is used for transmitting a control signal to a terminal. The logical channel is multiplexed on the transport channel and transmitted on the channel on the actual physical line. Therefore, when there are a plurality of logical channels, data transmitted on different logical channels is
After transmitting the previously received data using the channel on one physical line, the next data is transmitted.

[0003]

FIG. 7 shows an embodiment of such a conventional logical channel termination function block. In FIG. 7, the data collection processing unit 9 collects the data queued in the transmission queues 41, 42, 43, and 44 in the order of arrival, and transmits the data to the transmission processing unit 7. For this reason, even if the logical channels have different priorities, it will wait for the later queued data to arrive until the earlier queued data with the lower priority is finished. This causes a problem in that a delay in transmitting data transmitted earlier affects transmission of higher priority data transmitted later.

Here, the priority of the logical channel is fixed depending on the system, and the setting is not changed for each call under the control of the radio network controller.

As another problem, since the transmission timing of data is determined in the transfer channel, if the logical channels are transmitted all at once, the M in FIG.
The AC protocol processing unit 8 receives a large amount of data at the same time, which causes a problem that the processing load increases.

An object of the present invention is to provide a transmission control method capable of giving priority to transmission of a logical channel having a high priority.

Another object of the present invention is to provide a transmission control method capable of dispersing transmission of a logical channel without delaying transmission of a transfer channel.

[0008]

According to the transmission control method of the present invention, a distribution means for outputting an original packet for each priority of the original packet, and an input of the original packet output from the distribution means, the divided packet A plurality of dividing means provided for each priority, which are divided and output, a plurality of queues provided for each priority, which queue the divided packets, and the plurality of queues queued in the plurality of queues. And multiplexing means for reading and outputting the divided packets in descending order of priority.

Further, in the transmission control method according to the present invention, in the above-mentioned transmission control method, the priority order of some of the plurality of division means is the same, and some of the plurality of queues have the same priority. The distribution means outputs the original packets having the same priority with the arrival order being assigned to the division means having the same priority, and the multiplexing means outputs Is characterized in that the same divided packets are read out and output in the order of earlier arrival order.

Furthermore, a transmission control system according to the present invention is characterized in that in the above-mentioned transmission control system, the priority is set for each call.

Further, a transmission control system according to the present invention is characterized in that in the above-mentioned transmission control system, the priority is fixed.

Further, in the transmission control method according to the present invention, in the above-mentioned transmission control method, the multiplexing means operates in synchronization with a transmission timing of a lower layer than the multiplexing means.

[0013] The transmission control method according to the present invention comprises: a distribution step of outputting original packets by priority of the original packets;
Inputting the original packet output in the distribution step, dividing and outputting the divided packets, a plurality of dividing steps provided for each priority, and queuing the divided packets, provided for each priority A plurality of queuing steps, and a multiplexing step of reading and outputting the divided packets queued in the plurality of queuing steps in descending order of priority.

Further, in the transmission control method according to the present invention, in the above-mentioned transmission control method, some of the plurality of division steps have the same priority, and the plurality of queuing steps have the same priority. In some queuing steps, the priorities are the same, and in the distributing step, original packets having the same priority are output with the arrival order assigned to the division steps having the same priority, and the multiplexing step is performed. Is characterized in that the divided packets having the same priority are read out and output in the order of earlier arrival order.

Further, in the transmission control method according to the present invention, in the above-mentioned transmission control method, the priority is set for each call.

A transmission control method according to the present invention is characterized in that, in the above-mentioned transmission control method, the priority is fixed.

Further, in the transmission control method according to the present invention, in the above-mentioned transmission control method, the multiplexing step is performed in synchronization with a transmission timing of a layer lower than the multiplexing step.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment 1] A transmission control method according to the present invention uses a function block for terminating a logical channel in a radio network controller of a W-CDMA system. When transferring data to be transmitted to a transfer channel, a transmission priority process for determining a transmission priority order according to priority is provided. Further, the priority of the logical channel is not fixed in the system but can be set for each call.

As shown in FIG. 1, one embodiment of the transmission control system according to the present invention is an inter-card interface A,
In the logical channel termination processing function block 2 realized between the inter-card interfaces B, the logical channel distribution unit 30, the RLC protocol processing units 31, 32, 33, and 3
4, transmission queues 41, 42, 43, 44, transmission processing unit 7
The priority transmission processing unit 5 and the timer 6 are provided according to the present invention for the configuration of the logical channel terminating function constituted by.

The logical channel distributing unit 30 is a distributing means, and includes RLC protocol processing units 31, 32, 33, and 34.
Is a dividing unit, and the priority transmission processing unit 5 is a multiplexing unit.

The priority transmission processing unit 5 monitors the transmission queues 41, 42, 43 and 44 by using a timing signal from the timer 6 having a cycle similar to the transmission cycle of the transfer channel transmitted from the MAC protocol processing unit 8 as a trigger. Then, the signal in the transmission queue with a higher priority is transmitted to the transmission processing unit 7 with priority.

Therefore, an effect is obtained that signals of logical channels having different priorities can be transmitted in an order according to the priorities.

FIG. 1 is a block diagram showing a configuration in which a transmission control method is applied to a logical channel termination processing function block 2 as one embodiment of the present invention.

In FIG. 1, an RRC protocol processing unit 1
Is a functional block that terminates the Radio Resource Control Protocol (hereinafter referred to as the RRC protocol),
It controls wireless networks, transfers services of higher layers, and so on. 3r for RRC protocol details
d Generation Partnership Project (hereinafter referred to as 3GPP) Technical Specification (hereinafter referred to as TS) 25.
331. The RRC protocol processing is mainly realized by software, and signals are transmitted and received through the inter-card interface A with the termination processing function block 2 of the logical channel, which is the object of the present invention. The channel that the logical channel means will be described later. The data signal from the RRC protocol processing unit 1 is Radio Link Control
It is transferred in units of variable-length data units called Service Data Units (hereinafter referred to as RLC SDUs). This variable length data unit is the original packet. In the present embodiment, the original packet is in units of this variable-length data unit, but in the present invention, the original packet may be of a fixed length. Also, according to the present invention,
The RRC protocol processor 1 can transmit a logical channel priority setting signal to the logical channel termination function block 2. The logical channel termination processing block 2 receives the RLC SDU from the RRC protocol processing unit 1 at the logical channel distribution unit 30. In the present invention, the priority setting signal of the logical channel is received by the priority transmission processing unit 5 described later. The logical channel distribution unit 30 distributes the received RLC SDU for each logical channel, and
2, 33, or 34. RLC protocol processing units 31, 32, 33 and 34 are Radio Link Control
Implement the protocol. Radio Link Control protocol is a protocol for performing communication on a logical channel.
Call the LC protocol. The RLC protocol is RLC S
This is a protocol for transmitting RLC PDUs by dividing DUs into fixed-length data units called Radio Link Control Protocol Data Units (hereinafter referred to as RLC PDUs), and has functions such as error correction by retransmission. RLC
A PDU is a fragmented packet. The details of the RLC protocol are described in 3GPP TS.25.322. RLC
The protocol processing units 31, 32, 33, and 34 perform protocol processing for dividing RLC SDUs transferred on different logical channels into RLC PDUs in parallel, and transmit the RLC PDUs. , RL sent by each of, 33 and 34
The C PDU is transmitted to the transmission queues 41, 42, 43, 44. The transmission queues 41, 42, 43 and 44 transmit R
This is a queue for packing LC PDUs before the transmission timing comes, and has a separate queue for each logical channel. RLC P from transmission queues 41, 42, 43, 44
The priority transmission processing unit 5 takes out the DU. The priority transmission processing unit 5 is a processing unit installed according to the present invention, and according to a timing signal from a timer 6 to be described later, the priority transmission processing unit 5 transmits the RLC PDUs queued in the transmission queues 41, 42, 43, and 44. The output of any one of the RLC protocol processing units 31, 32, 33, and 34 that processes the logical channel with the highest priority is extracted from the output and transmitted to the transmission processing unit 7. In the present invention, the priority of the logical channel can be set for each call by setting from the RRC protocol processing unit 1. The priority may be fixed in the system. The timer 6 is installed according to the present invention, and is activated when data to be transmitted is queued in the transmission queues 41, 42, 43, and 44, and the transmission timing of the data transmitted from the MAC protocol processing unit 7, which will be described later. Generate a timing signal equal to The timer 6 starts when data to be transmitted is queued, and stops when there is no more data to be transmitted. Instructions to start and stop are given by instructions from the priority transmission processing unit 5. The transmission processing unit 7 transmits the RLC PDU received from the priority transmission processing unit 5 to the MAC protocol processing unit 8 via the inter-card interface B.
The MAC protocol processing unit 8 is a functional block for terminating the Medium Access Control protocol (hereinafter, MAC protocol), and performs multiplexing of a logical channel onto a transfer channel. The channel that the transfer channel means will be described later. 3GPP T for MAC protocol details
It is described in S25.321. MAC protocol processing unit 8
Performs MAC protocol processing on the received RLC PDU, and based on a transmission timing determined by the system, a Medium Access Control Protocol Data Unit (hereinafter M
AC PDU). The transmission timing is equal to the timing generated by the timer 6.

The function block for terminating the logical channel having the configuration shown in FIG. 1 is one function block of the radio network controller of the W-CDMA system. The logical channel carries out signal transfer between a terminal and a radio network controller in a W-CDMA system.

FIG. 2 shows a protocol configuration relating to the control signal. In FIG. 2, RRC indicates the aforementioned RRC protocol, RLC indicates the aforementioned RLC protocol, and MAC indicates the aforementioned MAC protocol. Although PHY means a physical line, it does not relate to the present invention, and a detailed description is omitted.

The wireless network control device 1001 and the terminal 1000 have symmetrical protocol configurations, and communicate with each other using a peer protocol. That is, RRC 100 and RRC 1
01, RLC 3010 and RLC 3011, RLC
3020 and RLC 3021, RLC 3030 and RL
C 3031, RLC 3040 and RLC 3041,
MAC 800 and MAC 801, PHY 900 and P
The HY 901 communicates with each other.

RLC 3010, 3011, 3020,
Each of the channels 3021, 3030, 3031, 3040, and 3041 communicates with a logical channel and a MAC.
A channel in which each of 800 and 801 communicates is called a transfer channel.

In FIG. 2, there are four logical channels, but this number is not fixed and can be increased or decreased according to the system. The priority of a logical channel may be set according to a signal to be transferred.

RL of radio network controller 1001
The control signals transmitted from C 3011, 3021, 3031 and 3041 are transmitted to the MAC 801 in the priority order according to the transmission priority processing method shown in FIG. 1, so that the MAC 801 places the control signal on the transfer channel in the order of reception by the terminal. 1000 to the MAC 800. In the MAC 800 of the terminal 1000, the RLCs 3010, 3020, 3030, 304
0 to RLC 3010, 3020, 30
In 30 and 3040, a signal with a higher priority can be received with priority.

Hereinafter, the operation of this embodiment will be described. FIG. 3 shows a time-series operation when signals with different priorities are received in the embodiment of the transmission priority processing method shown in FIG.

In the description of FIG. 3, the RLC of FIG.
For the protocol processing units 31, 32, 33, and 34, the logical channel processed by the RLC protocol processing unit 31 has the highest priority, and the RLC protocol processing units 32 and RLC
It is assumed that the protocol processing unit 33 and the RLC protocol processing unit 34 are set so that the priority becomes lower in this order. The priority is a value determined for each call or by the system, and can be changed.

The RRC protocol processing unit 1 shown in FIG. 1 converts the RLC SDU shown in FIG.
Send to Logical channel distribution unit 3 in FIG.
At 0, the RLC SDU is transmitted to the RLC protocol processing unit that handles the specified logical channel.

The RLC SDU represented in FIG.
LC protocol processing unit 31 and RLC protocol processing unit 3
4 shows an example of distribution. The RLC protocol processing 34 in FIG. 1 transmits the RLC PDU represented by FIG. 3 b) to the transmission queue 44 as a result of performing the RLC protocol processing. Further, as a result of performing the RLC protocol processing, the RLC protocol processing 31 in FIG.
The RLC PDU represented by c) is transmitted to the transmission queue 41.

The transmission queue 44 shown in FIG.
The RLC PDU is queued as shown by d), and the RLC PDU received according to the priority by the priority transmission processing unit 5 in FIG.
Is transmitted from the transmission processing unit 7 to the MAC protocol processing unit 8 via the inter-card interface B as shown in FIG. On the other hand, the transmission queue 41 in FIG.
In FIG. 3, the RLC PDU is queued as shown in FIG. 3 e), and the RLC PDU received according to the priority by the priority transmission processing unit 5 in FIG.
The DU is transmitted from the transmission processing unit 7 in FIG. 1 to the MAC protocol processing unit 8 via the inter-card interface B as shown in FIG. The MAC protocol processing unit 8 in FIG. 1 performs MAC protocol processing, and outputs a MAC PDU as shown in FIG. 3 g).

The operation of FIG. 3 from RLC SDU reception to MAC PDU transmission will be briefly described. At timing t1 in FIG. 3, the RLC SDU 1 is received by the inter-card interface A. Here RLC
SDU1 is the RLC protocol processing unit 3 as described above.
4 shall be distributed. At timing t2 in FIG. 3, the RLC SDU1 is
4 and RLC PDU1-1 is output. The output RLC PDU1-1 is simultaneously transmitted to the transmission queue 44.
Queued to. Here, RLC PDU1-1
Is shown as PDU1-1 in FIG. In FIG. 3, RLC PDU is abbreviated as PDU. Timing t in FIG.
Reference numeral 3 denotes a timing indicated by a timing signal from the timer 6 in FIG. 1. The PDU 1-1 is extracted from the transmission queue 44 by the priority transmission processing unit 5 in FIG. Is transmitted to the PDU1-1. At a timing t4 in FIG. 3, the MAC PDU 1-1 is transmitted from the MAC protocol processing unit 8 in FIG. Here, the timing t4 indicates the transmission timing of the transfer channel and is defined by the system.

Next, FIG. 3 a) Interface A between cards
RLC SDU1 and RLCSDU2 shown in Fig. 3 d)
The transmission queue 44 and FIG. 3 e) The flow until queuing in the transmission queue 41 will be described. R in FIG. 3 a)
The LC SDU 1 is divided into five RLC PDUs by the RLC protocol processing unit 34 in FIG. 1, and the RLC PDU 1-1 obtained by dividing the RLC SDU 1 at the timing t2 as described above is transmitted in the transmission queue 44 shown in FIG. To queue. Thereafter, similarly, PDU1-2 at timing t5, and PDU1 at timing t7.
-3, PDU1-4 at the timing t8, and PDU1-5 at the timing t12 in the transmission queue 44 shown in FIG. RLC in FIG. 3 a)
The SDU2 is divided into two RLC PDUs in the RLC protocol processing unit 31 in FIG.
2 and PDU2-1 at timing t13.
-2 is queued in the transmission queue 41 shown in FIG.

Next, the priority transmission processing unit 5 in FIG. 1 picks up RLC PDUs from the transmission queues 41 and 44 in FIG. 1 which are functional units based on the present invention.
The operation flow of transmission from the transmission processing unit 7 to the inter-card interface B will be described. As described above, the priority transmission processing unit 5 in FIG. 1 transmits the transmission queues 41, 42, 42 based on the timing signal received from the timer 6.
Take the highest priority RLC PDU from 43,44. At timing t3, since the RLC PDU exists only in the transmission queue 44 shown in FIG. 3D), the PDU1-1 is picked up and the PDU1-1 is transmitted to the inter-card interface B as shown in FIG. 3F). Similarly, PDU1-2 is output at timing t6, and PDU1-3 is output at timing t9. At timing t14, PDU1-4 and PDU1-5 are queued in the transmission queue 44 in FIG. On the other hand, PDU 2-1 and PDU 2-2 are queued in the transmission queue 41 in FIG. In the example shown in FIG. 3, since the transmission queue 41 has a higher priority than the transmission queue 44, the PDU 2-1 queued in the transmission queue 41 is output. Similarly, the PDU 2-2 having the highest priority is output at the timing t16. After the high-priority transmission queue 41 becomes empty, the timing t1
8, PDU1-4 at timing t20.
5 is output.

Finally, the card interface B shown in FIG.
The flow of the operation of transmitting the MAC PDU after the MAC protocol processing is performed by the MAC protocol processing unit 8 through the MAC will be described. At timing t4, the PDU1-1 received by the MAC protocol processing unit 8 via the card interface B is subjected to MAC protocol processing, and MAC
Transmit PDU1-1. Similarly, at timing t7, M
AC PDU1-2, MAC PD at timing t10
U1-3, MAC PDU2-1 at timing t15,
MAC PDU2-2 at timing t17, MAC PDU1-4 at timing t19, and MA at timing t21.
Output C PDU1-5. The transmission timing of the MAC PDU is a transmission timing determined by the system. In the present invention, the transmission timing in the MAC protocol processing unit 8 in FIG. 1 and the timing signal generated by the timer 6 in FIG. 1 have the same period.

Further, a detailed operation flow of the priority transmission processing section 5 shown in FIG. 1 will be described with reference to a flowchart of FIG. As described above, in the present description, the RLC protocol processing units 31, 32, 33, and 34 of FIG.
It is assumed that the logical channel to be processed in 1 has the highest priority, and is set for each call or by the system so that the priority becomes lower in the order of the RLC protocol processing unit 32, the RLC protocol processing unit 33, and the RLC protocol processing unit 34. I have. FIG. 4 shows an operation flow of the priority transmission processing unit 5 in FIG. The priority transmission processing unit 5 includes the transmission queues 41, 42, 43, 4 in FIG.
4 is started when the RLC PDU is queued in any one of them, and it is checked whether the timer 6 in FIG. 1 is stopped (A1 in FIG. 4). If the timer 6 is stopped, the timer 6 is started. (A3 in FIG. 4).
If the timer 6 is in operation, it waits for reception of a timing signal from the timer 6 (A2 in FIG. 4). When the timer is started in FIG. 4A3 or when the timing signal is received in FIG. 4A2, it is checked whether or not there is queuing data in the transmission queue 41 (FIG. 4A).
4) If the data exists, the data is taken out from the transmission queue 41 and transmitted (A5 in FIG. 4). If there is no data in FIG. 4A4, it is checked whether or not there is queuing data in the transmission queue 42 (FIG. 4A).
6) If the data exists, the data is taken out from the transmission queue 42 and transmitted (A7 in FIG. 4). FIG. 4A
If no data exists in step S6, it is checked whether queuing data exists in the transmission queue 43 (FIG. 4A).
8) If data exists, the data is taken out from the transmission queue 43 and transmitted (A9 in FIG. 4). FIG. 4A
If there is no data in step 8, data is taken out from the transmission queue 44 and transmitted (A10 in FIG. 4). FIG.
When any of the processes A5, A7, A9, and A10 is completed, it is checked whether queuing data still exists in any of the transmission queues 41, 42, 43, and 44 in FIG. 1 (A11 in FIG. 4). FIG. 4A if present
At 2, wait for a timing signal. If there is no data, the timer 6 is stopped and the process is terminated (A12 in FIG. 4).

Next, an extension of the embodiment of the present invention will be described.

Although the number of logical channels is described as four in the embodiment of the present invention, the number of logical channels is not limited, and the present invention can be applied to N logical channels.

Second Embodiment Next, another embodiment of the present invention will be described in detail with reference to the drawings. 3 and 4, the RLC protocol processing unit 31 in FIG. 1 has the highest priority, and the RLC protocol processing unit 32 has the highest priority.
The description has been made assuming that the priority becomes lower in the order of the RLC protocol processing unit 33 and the RLC protocol processing unit 34. However, as described above, the setting of the priority of the logical channel can be set for each call or by the system. When logical channels having the same priority are set, the processing of the priority transmission processing unit 5 shown in FIG. 4 is extended, and the processing flow shown in FIG. 5 is applied to the logical channel distribution unit 30 of FIG. The processing flow shown in FIG. Here, RLC of FIG.
It is assumed that the protocol processing units 31, 32, and 33 have the same highest priority, and the RLC protocol processing unit has the lowest priority. In FIG. 1, the logical channel distribution unit 30 is activated when data is received from the RRC protocol processing unit 1 via the inter-card interface A, and adds an arrival order counter to the received data as shown in FIG. FIG.
B1), the arrival order counter is counted up (FIG. 5)
B2). After that, the logical channel is confirmed and the logical channel is distributed (B3 in FIG. 5). FIG. 5 B4, B5, B
6, the appropriate R according to the logical channel as shown in B7.
The data is transmitted to the LC protocol processing units 31, 32, 33, and 34, and the process ends.

The priority transmission processing section 8 in FIG. 1 operates according to the processing flow shown in FIG. Hereinafter, the processing flow illustrated in FIG. 6 will be described. When data is queued in the transmission queues 41, 42, 43, and 44, the priority transmission processing unit 5 in FIG. 1 is activated and checks whether the timer 6 in FIG. 1 is stopped (A1 in FIG. 6). If the timer 6 has stopped, the timer 6 is started (A3 in FIG. 6).
If the timer 6 is in operation, it waits for a timing signal from the timer 6 (A2 in FIG. 6). When the timer is started in FIG. 6A3 or when the timing signal is received in FIG. 6A2, it is checked whether there is queuing data in the transmission queue 41, the transmission queue 42 or the transmission queue 43 (A13 in FIG. 6). If data exists, the data with the smallest arrival order counter is fetched from the transmission queues 41, 42, and 43 and transmitted (FIG. 6).
A14). If there is no data in A13 in FIG. 6, the data is taken out from the transmission queue 44 and transmitted (A10 in FIG. 4). When one of the processes in FIGS. 6A14 and A10 ends, the transmission queues 41, 42, 43, and 4 in FIG.
4 to check whether queuing data still exists (FIG. 6A11). If data exists, wait for a timing signal in FIG. 6A2. If no data exists, the timer 6 is stopped and the process is terminated (A12 in FIG. 6).

[0045]

As described above, according to the present invention,
The following effects are obtained.

The first effect is that, in the transfer of logical channels having different priorities, a logical channel having a higher priority can be transferred before a logical channel having a lower priority.

The reason is that when data is taken out from the transmission queue, a function of sequentially taking out the queue with the highest priority among the transmission queues is provided.

The second effect is that the priority described in the first effect can be set for each call or in the system, and there is no need to be aware of the change of the priority setting.

The reason is that when data is taken out of the transmission queue, the priority is set for each call or in the system.

The third effect is that no delay occurs in the transfer timing of the transfer channel in the lower layer even when the logical channel with the higher priority is transmitted with priority.

The first effect is that immediately after the head data is transmitted when the data is queued in the transmission queue, generation of a timing signal having the same cycle as the transmission timing of the transfer channel is started, This is because a method of performing subsequent data transmission is adopted.

The fourth effect is that the method is simple and can be configured by either software or hardware.

The reason is that since the priority transmission processing unit and the timer installed in the present invention are both processed by simple logic, whether the configuration of the functional block terminating the logical channel is hardware or software This is because it can be applied irrespective of.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a transmission control system according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a protocol layer in transmission between a radio network controller and a terminal according to an embodiment of the present invention.

FIG. 3 is a timing chart showing an operation of the wireless network control device according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of a priority transmission processing unit according to the first embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of a logical channel distribution unit according to the second embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of a priority transmission processing unit according to the second embodiment of the present invention.

FIG. 7 is a block diagram showing a wireless network control device according to a conventional example.

[Explanation of symbols]

 Reference Signs List 1 RRC protocol processing unit 2 Logical channel termination processing functional block 3 MAC protocol processing unit 30 Logical channel distribution unit 31, 32, 33, 34 RLC protocol processing unit 41, 42, 43, 44 Transmission queue 5 Priority transmission processing unit 6 Timer 7 Transmission processing unit

Claims (10)

[Claims] 1. A distribution means for outputting an original packet for each priority of the original packet, and inputting the original packet output from the distribution means,
A plurality of dividing means provided for each priority, which is divided into divided packets and output; a plurality of queues provided for each priority, which queue the divided packets; and a plurality of queues provided for each priority. And a multiplexing means for reading and outputting the divided packets in descending order of priority. 2. The transmission control method according to claim 1, wherein some of the plurality of division units have the same priority, and some of the plurality of queues have a priority. The distribution unit outputs the original packets having the same priority with the arrival order being assigned to the division units having the same priority, and the multiplexing unit outputs the divided packets having the same priority. A transmission control method wherein packets are read out and output in order of the arrival order. 3. The transmission control method according to claim 1, wherein the priority is set for each call. 4. The transmission control method according to claim 1, wherein the priority is fixed. 5. The transmission control method according to claim 1, wherein the multiplexing unit operates in synchronization with a transmission timing of a lower layer than the multiplexing unit. Transmission control method. 6. A distribution step of outputting an original packet for each priority of the original packet; and inputting the original packet output in the distribution step, dividing the packet into divided packets, and outputting the divided packets. A plurality of dividing steps, a plurality of queuing steps provided for each priority, which queue the divided packets, and the divided packets queued in the plurality of queuing steps are read out in descending order of priority. A transmission control method, comprising: 7. The transmission control method according to claim 6, wherein some of the plurality of division steps have the same priority, and some of the plurality of queuing steps have the same priority. In the distributing step, original packets having the same priority are output in the dividing step having the same priority in the order of arrival, and in the multiplexing step, the priority order is output in the multiplexing step. Transmitting and outputting the same divided packets in the order of earlier arrival order. 8. The transmission control method according to claim 6, wherein the priority is set for each call. 9. The transmission control method according to claim 6, wherein the priority is fixed. 10. The transmission control method according to claim 6, wherein the multiplexing step is performed in synchronization with a transmission timing of a layer lower than the multiplexing step. Transmission control method.