KR100655734B1 - A method and apparatus for controlling and handling PHY interfaces of the base station of the mobile communications - Google Patents

Abstract

The present invention relates to a physical layer interface processing method and apparatus for a mobile communication base station system for efficiently processing an interface between a physical layer and a higher layer of a mobile communication base station system for high-speed data transmission. In the method for processing a physical layer interface of a mobile communication base station system according to the present invention, a) transmitting a memory address received from a media access control layer of a higher layer to a base station transmission controller and storing a data block to be transmitted for each physical channel in a transmission buffer Thereby transmitting downlink data; b) receiving uplink data by copying a data block received for each physical channel and stored in a reception buffer to a predetermined memory address and transferring the data block to a media access control layer; c) setting and managing base station physical layer parameters; And d) setting and releasing an uplink physical channel. According to the present invention, by applying a physical layer including a base station physical layer interface processor to a base station system for high-speed data transmission, it is possible to perform physical layer interface processing and physical layer control between upper layers more quickly and efficiently.

Mobile communication, base station, interface processor, physical layer, upper layer, control layer

Description

A method and apparatus for controlling and handling PHY interfaces of the base station of the mobile communications}

1 is a block diagram illustrating a physical layer interface processing apparatus as a configuration of a mobile communication base station system for high-speed data transmission according to an embodiment of the present invention.

2 is a functional block diagram of a base station physical layer interface processing apparatus according to the present invention.

3A is a diagram illustrating a downlink data transmission function performing procedure of a base station physical layer interface processing apparatus according to the present invention.

3B is a diagram illustrating a procedure of performing an uplink data reception function of a base station physical layer interface processing apparatus according to the present invention.

3C is a diagram illustrating a parameter setting and management function execution procedure of the base station physical layer interface processing apparatus according to the present invention.

3D is a diagram illustrating a procedure for performing uplink physical channel establishment and release function in the base station physical layer interface processing apparatus according to the present invention.

The present invention relates to a method and apparatus for processing a physical layer interface of a mobile communication base station system, and more particularly, to a method and apparatus for efficiently processing an interface between a physical layer and a higher layer of a mobile communication base station system. .

Digitization of communication systems has already become commonplace, and traffic is shifting from voice center to multimedia communication. In order to cope with such changes in the communication market, new mobile communication systems must consume more bandwidth and provide higher data rates than existing systems.

The new radio access technology provides high-speed packet service and is expected to provide about 100 Mbps with high mobility and about 1 Gbps with low mobility. However, the actual data rate depends on the number of users connected to the same radio resource, traffic characteristics, service parameters, deployment scenarios, available spectrum, propagation and interference conditions. To provide this high data rate, the channel must be wideband and more complex multipath processing is needed to handle even more multipaths.

In particular, OFDM (Orthogonal Frequency Division Multiplexing) method is advantageous for processing complex multipaths because of low frequency selective fading or narrowband interference effects, and adaptive frequency channel control enables increased bandwidth and transmission rate. As it is getting more and more attention. In addition, the OFDM scheme uses a plurality of carriers having mutual orthogonality, thereby increasing frequency utilization efficiency, and the process of demodulating and demodulating a plurality of carriers in a transceiver stage includes IFFT (Inverse Fast Fourier Transform) and FFT (Fast Fourier Transform). Fast Fourier Transform). The optimal channel capacity can be realized by using a high-order modulation method and an efficient coding method.

In order to guarantee a higher data rate in a high-speed packet service-based environment, protocol complexity of a new mobile communication system should be minimized as much as possible. In addition, in order to efficiently interwork the wireless protocol layer and the physical layer of the mobile communication system, it is necessary to enable fast data exchange and conversion and adjustment of various parameters.

On the other hand, as a prior art, Korean Patent Application No. 2001-84507 discloses the invention "Method of transmitting and receiving data between the physical layer and the link layer", the order of the data to be transmitted in the physical layer by FIFO The data is transmitted at the rising edge and the falling edge by segmentation, and the data received at the link layer is reassembled in order by the FIFO to process the data. Stored in the memory of the physical layer to be transmitted to the link layer divided by the size of data that can be transmitted from the system (segmentation), and the data received from the network processor of the link layer is reassembled to its original size (transmission) to each port It features.

According to the foregoing invention, the data transmission speed between the physical (PHY) layer and the link layer is improved by simultaneously transmitting the data at the rising edge and the falling edge by dividing the data into a predetermined size. .

On the other hand, as a prior art, Korean Patent Application No. 2002-6420 published an invention named "method of interfacing with the radio resource control layer for cell reselection in the physical layer of the mobile station", hierarchical cell structure is used If not, in the interface method between the physical layer and the radio resource control layer of the mobile station of the universal mobile communication system scheme for cell reselection, if the measured Ec / No is less than or equal to the intra-frequency threshold value, A first process of transmitting a measured cell measurement indicator including the measured Ec / No and a received signal access power (RSCP) to a radio resource control layer; and if the measured Ec / No is less than or equal to an interfrequency threshold value. Transmitting, by the physical layer, the serving cell measurement indicator including the measured Ec / No and RSCP to the radio resource control layer; If / No is less than or equal to the inter-RAT (Radio Access Technology) _threshold, the physical layer is configured to transmit a serving cell measurement indicator including the measured Ec / No and RSCP to the radio resource control layer. It is characterized by.

According to the foregoing invention, the frequency of signaling and the amount of computation of the radio resource control layer are reduced between the physical layer and the radio resource control layer.

Meanwhile, Korean Patent Application No. 2004-7011477 discloses an invention entitled "Radio Access System and Radio Access Method." A software modem of a radio communication system includes a baseband physical layer algorithm, a media access control function, a network layer, It performs the interface function of the system and includes a baseband interrupt service routine (ISR), a baseband interrupt service thread (IST), and a plurality of software processors called general processors.

The prior art is to reduce the hardware cost and increase system flexibility of the transmission and reception device.

An object of the present invention for solving the above problems, the base station physical layer structure that can satisfy the requirements of a newer mobile communication system for high-speed data transmission, and efficiently implements the interface function between the base station physical layer and the upper layer In order to provide a physical layer interface processing method of a mobile communication base station system provided with a base station physical layer interface processor.

In addition, another object of the present invention is to transmit / receive a base station for efficient and fast interworking with a base station physical layer (PHY), a higher layer, a medium access control layer (MAC), and a wireless control layer of a mobile communication system for high-speed data transmission. Provides an interface processing apparatus that can exchange data with a receiving end, and exchange messages between a medium access control layer and a radio control layer, and furthermore, a base station physical layer structure including a base station physical layer interface processor, a base station physical layer and a medium access control. The present invention provides a physical layer interface processing apparatus of a mobile communication base station system that provides a procedure for defining and exchanging messages between layers and a procedure for defining and exchanging messages between a base station physical layer and a radio control layer.

As a means for achieving the above object, the physical layer interface processing method of the base station system according to the present invention,

In the physical layer interface processing method of a mobile communication base station system for high speed data communication,

a) transmitting downlink data by transmitting a memory address received from an upper layer media access control layer to a base station transmission controller and storing a data block to be transmitted for each physical channel in a transmission buffer;

b) receiving uplink data by copying a data block received for each physical channel and stored in a reception buffer to a predetermined memory address and transferring the data block to a media access control layer;

c) setting and managing base station physical layer parameters; And

d) setting and releasing an uplink physical channel;

Characterized in that it comprises a.

In addition, as a means for achieving the above object, the physical layer interface processing apparatus of the base station system according to the present invention,

An apparatus for processing a physical layer interface of a mobile communication base station system for high speed data transmission,

A base station physical layer interface processor for processing a physical layer interface;

A base station transmission controller controlling the hardware of the transmitter of the base station;

A base station reception controller controlling the receiving end hardware of the base station;

A transmission buffer storing a data block to be transmitted on each physical channel;

An encoding processor for performing channel encoding related functions and pilot bit insertion from the transmission buffer;

A physical channel transmission processor that performs symbol mapping from the encoding processor output and performs time and frequency mapping according to a frame structure;

A physical channel reception processor for demodulating a physical channel and performing channel estimation;

A decoding processor for performing symbol and antenna demapping and decoding; And

Receiving buffer to store the data block transmitted by the decoding processor

Characterized in that it comprises a.

Hereinafter, a physical layer interface processing method and apparatus of a mobile communication base station system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a base station physical layer interface processing apparatus for processing a physical layer interface of a base station system for high speed data transmission according to an embodiment of the present invention.

First, as the physical layer of the base station, including the base station physical layer interface processor 100, the base station transmission controller 110, the transmission buffer 111, the encoding processor 112, the physical channel transmission processor 113, the base station reception controller ( 120, a physical channel reception processor 121, a decoding processor 122, and a reception buffer 123 are provided.

The base station physical layer interface processor 100 may exchange messages between the medium access control layer 130 and the radio control layer 140 in order to process the physical layer interface of the base station quickly and effectively, and the base station transmission controller 110. ) And the base station reception controller 120 may exchange data.

In particular, a message exchange method is used between the upper layer media access control layer 130 and the radio control layer 140, and data is exchanged between the base station transmission controller 110 and the base station reception controller 120 through a function call. do. The base station physical layer interface processor 100 transmits data to the base station transmission controller 110 to be transmitted wirelessly through the transmission buffer 111, the encoding processor 112 and the physical channel transmission processor 113, and wirelessly. The data is received and passed through the physical channel reception processor 121 and the decoding processor 122 to receive data stored in the reception buffer 123 from the base station reception controller 120.

Further, the base station transmission controller 110 connected to the base station physical layer interface processor 100 controls the transmit end hardware of the base station, and the base station reception controller 120 controls the receive end hardware of the base station.

The transmission buffer 111 connected to the base station transmission controller 110 stores a block of data to be transmitted on each physical channel, and the encoding processor 112 performs channel encoding related functions and pilot bit insertion from the transmission buffer 111. The physical channel transmit processor 113 performs symbol mapping from the output of the encoding processor 112 and performs time and frequency mapping according to the frame structure.

In addition, the physical channel reception processor 121 connected to the base station reception controller 120 demodulates the physical channel to perform channel estimation, and the decoding processor 122 performs symbol and antenna demapping and decoding, and a reception buffer. 123 stores a block of data transmitted by the decoding processor 122.

2 is a functional block diagram of a base station physical layer interface processing apparatus according to the present invention.

The base station physical layer interface processor 100 performs functions of performing downlink data transmission (101), uplink data reception (102), downlink physical layer parameter setting and management (103), uplink physical channel setting and cancellation (104). .

That is, by transmitting the memory address received from the medium access control layer 130 of the upper layer to the base station transmission controller 110 and storing the data block to be transmitted for each physical channel in the transmission buffer 111 to transmit the downlink data, The data block received for each physical channel and stored in the reception buffer 123 are copied to a predetermined memory address and transferred to the media access control layer 130 to receive uplink data.

A base station physical layer parameter setting and management, and uplink physical channel setting and release function is performed respectively.

In the case of performing the function of transmitting the downlink data 101, referring to a procedure of performing the downlink data transmission function of the base station physical layer interface processing apparatus of FIG. 3A, the base station physical layer interface processor 100 may include a medium access control layer ( When receiving the data transmission message from the 130, the base station physical layer interface processor 100 calls the data transmission function to transfer the data block to the base station transmission controller 110, thereby transmitting the data block received by the base station transmission controller 110. After copying to the transmission buffer 111, it is to be transmitted wirelessly through the encoding processor 112 and the physical channel transmission processor 113.

In the case of performing the function of transmitting the uplink data, referring to the procedure of performing the uplink data transmission function of the base station physical layer interface processing apparatus of FIG. 3B, the physical channel reception processor 121 and the decoding processor 122 may be replaced. When the base station reception controller 120 calls the data reception function and transfers the data block stored in the reception buffer 123 to the base station physical layer interface processor 100, the data block is stored at the memory address predetermined in the reception buffer 123. This is to copy the data transfer message to the media access control layer 130.

In the case of performing the function of setting and managing the physical layer parameters, referring to the procedure of performing physical layer parameter setting and management function of the base station physical layer interface processing apparatus of FIG. 3C, the media access control layer (see FIG. 3C). When receiving the uplink physical channel setup message from 130, the base station physical layer interface processor 100 calls the physical channel setup function to set up the corresponding physical channel, and upon receiving data, the base station reception controller 120 performs the data reception function. In this case, the data block stored in the reception buffer 123 is copied to a predetermined memory address, and then the data reception message is transmitted to the media access control layer 130. When receiving the downlink physical channel release message from the media access control layer 130, the physical channel release function is called to release the corresponding physical channel.

When performing the function of setting and releasing 104 the uplink physical channel, referring to the procedure of performing uplink physical layer setup and release function of the base station physical layer interface processing apparatus of FIG. 3D, the wireless control layer 140 as shown in FIG. 3D. ) Transmits the physical layer parameters as a message, the base station physical layer interface processor 100 calls each parameter setting function to set the corresponding parameters so that the base station transmission controller and the base station reception controllers 110 and 120 receive the base station transmitter and the base station receiver. Ensure proper control. Thereafter, the base station physical layer is in a state capable of transmitting data on all physical channels.

When the radio control layer 140 transmits the physical layer parameters as a message, the base station physical layer interface processor 100 calls each parameter setting function to set the corresponding parameters, so that the base station transmission controller 110 and the base station reception controller 120 ) Controls the base station transmitter and receiver respectively.

In addition, after performing the step, the base station physical layer interface processor 100 is in a state capable of transmitting data to all physical channels.

As a result, the embodiment of the present invention, the base station physical layer interface processor transfers the memory address received from the media access control layer to the base station transmission controller to store the data block to be transmitted for each physical channel in the transmission buffer to transmit data In order to receive data by copying the data block received for each physical channel and stored in the reception buffer to a pre-allocated memory address and transmitting the data block to the media access control layer, the physical layer of the base station is set and released. By setting and controlling the parameters, the physical layer including the base station physical layer interface processor is further applied to the base station system for high speed data transmission.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It is obvious to one with ordinary knowledge.

According to the present invention, by applying a physical layer including a base station physical layer interface processor to a base station system for high-speed data transmission, it is possible to perform physical layer interface processing and physical layer control between upper layers more quickly and efficiently.

Claims (11)

In the physical layer interface processing method of a mobile communication base station system for high speed data communication, a) transmitting downlink data by transmitting a memory address received from an upper layer media access control layer to a base station transmission controller and storing a data block to be transmitted for each physical channel in a transmission buffer; b) receiving uplink data by copying a data block received for each physical channel and stored in a reception buffer to a predetermined memory address and transferring the data block to a media access control layer; c) setting and managing base station physical layer parameters; And d) setting and releasing an uplink physical channel Physical layer interface processing method of a mobile communication base station system comprising a. The method of claim 1, wherein step a) comprises: a-1) receiving a data transmission message from the media access control layer; a-2) calling a data transmission function and transferring a data block to the base station transmission controller using the data transmission function; And a-3) copying the data block received by the base station transmission controller to the transmission buffer and transmitting the data block wirelessly through the encoding processor and the physical channel transmission processor. Physical layer interface processing method of a mobile communication base station system comprising a. The method of claim 1, wherein b), b-1) transmitting, by a base station reception controller, a data block stored in the reception buffer to a base station physical layer interface processor by calling a data reception function; b-2) copying a block of data to a memory address previously assigned to the receive buffer; And b-3) transmitting a data reception message to the media access control layer. Physical layer interface processing method of a mobile communication base station system comprising a. The method of claim 1, wherein c) is c-1) receiving an uplink physical channel establishment message from the medium access control layer; c-2) the base station physical layer interface processor calling a physical channel setting function to set a corresponding physical channel; c-3) upon receiving data, the base station reception controller calling a data reception function; c-4) copying the data block stored in the reception buffer to a predetermined memory address; c-5) delivering the data reception message to the media access control layer; c-6) receiving a downlink physical channel release message from the medium access control layer; And c-7) calling a physical channel release function to release the corresponding physical channel Physical layer interface processing method of a mobile communication base station system comprising a. The method of claim 1, wherein the d) step, d-1) the radio control layer transferring the physical layer parameters in a message; d-2) the base station physical layer interface processor setting a corresponding parameter; d-3) the base station physical layer interface processor calling each parameter setting function to set a corresponding parameter; And d-4) the base station transmission controller and the base station reception controller controlling the base station transmitter and the receiver, respectively Physical layer interface processing method of a mobile communication base station system comprising a. The method of claim 5, And after step d), the base station physical layer interface processor is in a state capable of transmitting data to all physical channels. An apparatus for processing a physical layer interface of a mobile communication base station system for high speed data transmission, A base station physical layer interface processor for processing a physical layer interface; A base station transmission controller for controlling the hardware of the transmitting end of the base station; A base station reception controller controlling the receiving end hardware of the base station; A transmission buffer storing a data block to be transmitted on each physical channel; An encoding processor for performing channel encoding related functions and pilot bit insertion from the transmission buffer; A physical channel transmission processor that performs symbol mapping from an output of the encoding processor and performs time and frequency mapping according to a frame structure; A physical channel reception processor for demodulating a physical channel and performing channel estimation; A decoding processor for performing symbol and antenna demapping and decoding; And Receiving buffer to store the data block transmitted by the decoding processor Physical layer interface processing apparatus of a mobile communication base station system comprising a. The method of claim 7, wherein The base station physical layer interface processor, the physical layer interface processing of the mobile communication base station system, characterized in that for exchanging messages between the medium access control layer and the radio control layer and the data exchange between the base station transmission controller and the base station reception controller. Device. The method of claim 7, wherein And physical data exchange between the base station transmission controller and the base station reception controller through a function call. The method of claim 7, wherein And the base station physical layer interface processor transfers data to a base station transmission controller and transmits the data wirelessly through a transmission buffer, an encoding processor, and a physical channel transmission processor. The method of claim 7, wherein The base station physical layer interface processor is a physical layer interface processing apparatus of a mobile communication base station system, characterized in that passing through the physical channel reception processor, the decoding processor receives data stored in the reception buffer from the base station reception controller.

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