KR100599202B1 - A method and apparatus for controlling and handling PHY interfaces of user equipment in the mobile communications system - Google Patents

Abstract

The present invention relates to a method and apparatus for processing a physical layer interface of a terminal in a mobile communication system for efficiently processing an interface between a physical layer and a higher layer of the terminal in a mobile communication system for high-speed data transmission. In the method of processing a physical layer interface of a mobile communication terminal according to the present invention, a) by transmitting a memory address received from the media access control layer of the upper layer to the terminal transmission controller by storing the data block to be transmitted for each physical channel in the transmission buffer Transmitting uplink data; b) receiving downlink 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 releasing downlink physical channels; d) adjusting uplink timing and frequency offset; e) setting and controlling physical layer parameters for each physical layer state of the terminal; And f) reporting the acquisition and departure. According to the present invention, it is possible to perform interface processing and physical layer control quickly and efficiently between a physical layer and a media access control layer and a radio control layer which are upper layers in a terminal of a mobile communication system.

Mobile communication, mobile terminal, interface processor, physical layer, upper layer, control layer

Description

A method and apparatus for controlling physical layer interface of a terminal in a mobile communication system {a method and apparatus for controlling and handling PHY interfaces of user equipment in the mobile communications system}

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

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

3A is a diagram illustrating a procedure of performing an uplink data transmission function of a terminal physical layer interface processing apparatus according to the present invention.

3B is a view illustrating a procedure of performing a downlink data reception function of a terminal physical layer interface processing apparatus according to the present invention.

3C is a flowchart illustrating a downlink physical channel setup and release function execution procedure of the terminal physical layer interface processing apparatus according to the present invention.

3D is a diagram illustrating an uplink timing and frequency adjustment function performing procedure of a terminal physical layer interface processing apparatus according to the present invention.

3E is a diagram illustrating a procedure of performing a physical layer state and parameter management function of a terminal physical layer interface processing apparatus according to the present invention.

3F is a diagram illustrating a procedure of performing a synchronization acquisition and a deviation reporting function of a terminal 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 terminal in a mobile communication system, and more particularly, to a method and apparatus for efficiently processing an interface between a physical layer and a higher layer of a terminal in a mobile communication system. It is about.

In order to cope with the change of the communication market from the digitalization of the communication system and the communication from the voice center to the multimedia communication, the new mobile communication system consumes more bandwidth and provides higher data rate than the existing system.

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, the Orthogonal Frequency Division Multiplexing (OFDM) method is advantageous for processing complex multipaths due to less influence of frequency selective fading or narrowband interference. It is getting more and more attention as it increases. 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 addition, the protocol complexity of the new mobile communication system should be minimized as much as possible to ensure higher data rates in a high-speed packet service-based environment. 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 data to be transmitted in the physical layer by FIFO (first in, first out) The data is transmitted at the rising edge and the falling edge at the segmentation, and the data received at the link layer is reassembled in the order of the FIFO to process the data. Is stored in the memory of the physical layer and divided by the size of data that can be transmitted from the system to the link layer, and the data received from the link layer network processor is reassembled to its original size and transmitted to each port. It is characterized by.

Accordingly, according to the prior invention, the data transmission speed between the physical (PHY) layer and the link layer may be improved by simultaneously dividing the data into a predetermined size and simultaneously transmitting them at the rising edge and the falling edge. It is.

On the other hand, in the prior art, Korean Patent Application No. 2002-6420 discloses the invention "method of interfacing with the radio resource control layer for cell reselection in the physical layer of the mobile station" is disclosed, 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.

Accordingly, according to the foregoing invention, the signaling frequency between the physical layer and the radio resource control layer is reduced and the computation amount of the radio resource control layer is reduced.

On the other hand, as a prior art, Korean Patent Application No. 2004-7011477 discloses the invention "wireless connection system and wireless access method", the software modem of the wireless communication system is a baseband physical layer algorithm, media access control It performs functions, interfaces with the network layer, 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 is to implement a terminal physical layer structure that can satisfy the requirements of a newer mobile communication system for high-speed data transmission, and an interface function between the terminal physical layer and a higher layer efficiently The present invention provides a method for processing a physical layer interface of a terminal in a mobile communication system provided with a terminal physical layer interface processor.

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

As a means for achieving the above object, the physical layer interface processing method of a mobile communication terminal according to the present invention,

A method for processing a physical layer interface of a terminal in a mobile communication system for high speed data communication,

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

b) receiving downlink 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 releasing downlink physical channels;

d) adjusting uplink timing and frequency offset;

e) setting and controlling physical layer parameters for each physical layer state of the terminal; And

f) reporting motivation and deviations

Characterized in that it comprises a.

In addition, as another means for achieving the above object, the physical layer interface processing apparatus of the mobile communication terminal according to the present invention,

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

A terminal physical layer interface processor for processing a physical layer interface;

A terminal transmission controller controlling the hardware of the transmitting end of the terminal;

A terminal reception controller for controlling the reception hardware of the terminal;

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 synchronization and physical channels 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 method and an apparatus for processing physical layer interface of a terminal in a mobile communication system according to an embodiment of the present invention will be described in detail.

1 is an embodiment of the present invention, which shows a terminal physical layer interface processing apparatus for processing a physical layer interface of a mobile communication terminal for high-speed data transmission.

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

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

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 terminal transmission controller 110 and the terminal reception controller 120 through a function call. do. The terminal physical layer interface processor 100 transmits data to the terminal 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 terminal reception controller 120.

Furthermore, the terminal transmission controller 110 connected to the terminal physical layer interface processor 100 controls the transmitting end hardware of the terminal, and the terminal receiving controller 120 controls the receiving end hardware of the terminal.

In addition, the transmission buffer 111 connected to the terminal transmission controller 110 stores data blocks 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 terminal reception controller 120 demodulates the synchronization and physical channels to perform channel estimation, and the decoding processor 122 performs symbol and antenna demapping and decoding. The reception buffer 123 stores the data block transmitted by the decoding processor 122.

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

The terminal physical layer interface processor 100 is divided into uplink data transmission 101, downlink data reception 102, downlink physical channel setting and release 103, uplink timing and frequency offset adjustment 104, and physical layer state management. And parameter setting 105, synchronization acquisition, and deviation reporting 106.

That is, the memory address received from the media access control layer 130 of the upper layer is transmitted to the terminal transmission controller 110 to store data blocks to be transmitted for each physical channel in the transmission buffer 111 to transmit data. The data block is received by copying the data block received for each physical channel and stored in the reception buffer 123 to a previously allocated memory address and transferring the data block to the media access control layer 130.

The UE sets and releases downlink physical channels, adjusts uplink timing and frequency offset, sets and controls physical layer parameters for each physical layer state of the UE, and reports synchronization acquisition and deviation.

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 terminal physical layer interface processing apparatus of FIG. 3A, the terminal physical layer interface processor 100 may use a medium access control layer ( When the data transmission message is received from the terminal 130, the terminal physical layer interface processor 100 calls the data transmission function to transfer the data block to the terminal transmission controller 110, thereby transmitting the data block received by the terminal transmission controller 110. After copying to the transmission buffer 111, the data is transmitted wirelessly through the encoding processor 112 and the physical channel transmission processor 113.

In the case of performing the function of transmitting the downlink data 102, referring to the procedure of performing the downlink data transmission function of the terminal physical layer interface processing apparatus of FIG. 3B, the physical channel reception processor 121 and the decoding processor 122 may be used. When the terminal block controller 120 transmits the data block stored in the reception buffer 123 to the terminal physical layer interface processor 100 by calling the data reception function, the data block is assigned to 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 case of performing the function of setting and managing the downlink physical layer parameter, referring to the procedure of performing downlink physical channel setting and release function of the terminal physical layer interface processing apparatus of FIG. 3C, the media access control layer as shown in FIG. 3C. Upon receiving the downlink physical channel setup message from 130, the terminal physical layer interface processor 100 calls the physical channel setup function to set up the corresponding physical channel, and upon receiving data, the terminal reception controller 120 receives the data reception function. The terminal physical layer interface processor 100 copies the data block stored in the reception buffer 123 to a predetermined memory address, and transmits the data reception message to the media access control layer 130. In addition, upon receiving the uplink 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 adjusting the uplink timing and the frequency offset 104, referring to the uplink timing and frequency offset adjustment function performing procedure of the UE physical layer interface processing apparatus of FIG. 3D, the medium access control as shown in FIG. 3D. Upon receiving the uplink timing adjustment message from the layer 130, the terminal physical layer interface processor 100 calculates a timing offset and calls a timing offset adjustment function to cause the terminal transmission controller 110 to adjust the uplink timing. .

Meanwhile, in the uplink frequency offset adjustment, when the uplink frequency adjustment message is received from the medium access control layer 130, the terminal physical layer interface processor 100 calculates a frequency offset, and the terminal physical layer interface processor 100 adjusts the frequency offset. By calling a function, the terminal transmission controller 110 adjusts the uplink frequency offset.

In the case of performing the function of managing the physical layer state and setting the parameter 105, referring to the procedure of performing the physical layer state management and parameter setting function of the terminal physical layer interface processing apparatus of FIG. 3E, wireless control is performed as shown in FIG. 3E. When the layer 140 delivers the physical layer parameter as a message, the terminal physical layer interface processor 100 sets the corresponding parameter and performs a state transition when the state transition message is received from the media access control layer 130. The terminal transmission controller 110 and the terminal reception controller 120 call the physical layer parameter setting function to control the terminal transmission terminal and the terminal reception terminal according to each state.

When performing the function of reporting 106 the synchronization acquisition and the deviation, referring to the procedure of performing the synchronization acquisition and deviation reporting function of the terminal physical layer interface processing apparatus of FIG. 3F, the wireless control layer 140 as shown in FIG. 3F. ) Transmits the synchronization start message to the terminal physical layer interface processor 100, the terminal receiving end calls the synchronization start function to start the synchronization procedure. At the time of synchronization acquisition, the terminal reception controller 120 transmits cell information to the terminal physical layer interface processor 100 by calling a synchronization acquisition function and transmits the cell information to the wireless control layer 140 through a synchronization acquisition message. If desynchronization occurs, the terminal reception controller 120 calls the desynchronization function and transmits it to the terminal physical layer interface processor 100 and delivers the desynchronization message to the radio control layer 140.

As a result, the terminal physical layer interface processor according to an embodiment of the present invention transmits the memory address received from the media access control layer to the terminal transmission controller to transmit data by storing a data block to be transmitted for each physical channel in the transmission buffer. In order to receive data by copying the data block received for each physical channel and stored in the receiving buffer to a pre-allocated memory address to the media access control layer, setting and releasing the downlink physical channel, uplink timing and frequency offset It adjusts, sets and controls physical layer parameters for each physical layer state of the terminal, and reports synchronization acquisition and deviation.

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, it is possible to perform interface processing and physical layer control quickly and efficiently between a physical layer and a media access control layer and a radio control layer which are upper layers in a terminal of a mobile communication system.

Claims (13)

A method for processing a physical layer interface of a terminal in a mobile communication system for high speed data communication, a) transmitting uplink data by transmitting a memory address received from an upper layer media access control layer to a terminal transmission controller and storing a data block to be transmitted for each physical channel in a transmission buffer; b) receiving downlink 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 releasing downlink physical channels; d) adjusting uplink timing and frequency offset; e) setting and controlling physical layer parameters for each physical layer state of the terminal; And f) reporting motivation and deviations Physical layer interface processing method of a mobile communication terminal comprising a. The method of claim 1, wherein step a) comprises: a-1) the terminal physical layer interface processor receiving a data transmission message from a media access control layer; a-2) the terminal physical layer interface processor calling a data transmission function to transfer a data block to the terminal transmission controller; And a-3) copying the data block received by the terminal 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 terminal comprising a. The method of claim 1, wherein b), b-1) passing the data block stored in the reception buffer through the physical channel reception processor and the decoding processor, and transmitting the data reception function to a terminal 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 terminal comprising a. The method of claim 1, wherein c) is c-1) receiving a downlink physical channel establishment message from the medium access control layer; c-2) the terminal physical layer interface processor calling a physical channel setting function to set a corresponding physical channel; c-3) when the terminal receives the data, calling the data receiving function; c-4) copying the data block stored in the receiving buffer to a predetermined memory address; c-5) delivering a 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 terminal comprising a. The method of claim 1, wherein the d) step, d-1) receiving an uplink timing adjustment message from the medium access control layer; d-2) the terminal physical layer interface processor calculating a timing offset; And d-3) the terminal physical layer interface processor calling a timing offset adjustment function to cause the terminal transmission controller to adjust the uplink timing offset. Physical layer interface processing method of a mobile communication terminal comprising a. The method of claim 1, wherein the d) step, d-1) receiving an uplink frequency adjustment message from the medium access control layer; d-2) the terminal physical layer interface processor calculating a frequency offset; And d-3) the terminal physical layer interface processor calling a frequency offset adjustment function to cause the terminal transmission controller to adjust the uplink frequency offset. Physical layer interface processing method of a mobile communication terminal comprising a. The method of claim 1, wherein step e) e-1) transmitting, by the radio control layer, a physical layer parameter in a message; e-2) the terminal physical layer interface processor setting a corresponding parameter; e-3) receiving a state transition message from the medium access control layer; e-4) the terminal physical layer interface processor performing the received state transition; And e-5) calling the physical layer parameter setting function so that the terminal transmission controller and the terminal reception controller control the terminal transmission terminal and the terminal reception terminal according to each state. Physical layer interface processing method of a mobile communication terminal comprising a. The method of claim 1, wherein f) is f-1) transmitting, by the radio control layer, a synchronization start message to a terminal physical layer interface processor; f-2) the terminal physical layer interface processor calling a synchronization start function to cause the terminal reception controller to start a synchronization procedure; f-3) invoking a synchronization acquisition function from a terminal physical layer interface processor when the terminal reception controller acquires synchronization; f-4) determining whether synchronization acquisition has been made; f-4) transmitting, by the terminal reception controller, cell information to a terminal physical layer interface processor when synchronization is acquired; f-5) the terminal physical layer interface processor transmitting to the radio control layer through a synchronization acquisition message; f-6) determining whether a deviation occurs after the synchronization acquisition; f-7) when a synchronization departure occurs, the terminal reception controller calling a synchronization departure function to the terminal physical layer interface processor and transferring the synchronization function to the terminal physical layer interface processor; And f-8) the terminal physical layer interface processor transmitting a departure synchronization message to a radio control layer Physical layer interface processing method of a mobile communication terminal comprising a. An apparatus for processing a physical layer interface of a mobile communication terminal in a mobile communication system for high speed data transmission, A terminal physical layer interface processor for processing a physical layer interface; A terminal transmission controller for controlling the hardware of the transmitting end of the terminal; A terminal reception controller for controlling the reception hardware of the terminal; 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 synchronization and physical channels 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 terminal comprising a. The method of claim 9, The terminal physical layer interface processor may exchange messages between the medium access control layer and the radio control layer, and may exchange data between the terminal transmission controller and the terminal reception controller. Processing unit. The method of claim 9, And physical data exchange between the terminal transmission controller and the terminal reception controller through a function call. The method of claim 9, And the terminal physical layer interface processor transfers data to the terminal transmission controller and wirelessly transmits the data through a transmission buffer, an encoding processor, and a physical channel transmission processor. The method of claim 9, The physical layer interface processor of the mobile communication terminal, characterized in that the data passing through the physical channel receiving processor, the decoding processor receives the data stored in the receiving buffer from the terminal receiving controller.

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