KR101289210B1 - Method and apparatus for communication between devices with different transmission coverage - Google Patents

Abstract

The present invention relates to a management apparatus for managing communication between a plurality of short range communication devices and a plurality of long range communication devices located in one cell and having different transmission ranges, wherein the first short range communication device may request an association request from a network. An access resource allocator for allocating an access resource to a radio resource for downlink so that the access resource can be allocated; A selection unit for selecting a communication relay device for relaying relay data of the first short-range communication device among the plurality of long-range communication devices; Allocating at least one relay resource to a radio resource for uplink so that the communication relay device can relay the relay data to a second short range communication device or another long range communication device that is outside the transmission range of the first short range communication device. A relay resource allocation unit; And a receiver configured to receive the relay data using the at least one relay resource.

Description

TECHNICAL AND APPARATUS FOR COMMUNICATION BETWEEN DEVICES WITH DIFFERENT TRANSMISSION COVERAGE}

The present invention relates to an apparatus and method for communication, and more particularly, to an apparatus and method for communication between devices having different data transmission ranges.

The present invention is derived from the research conducted as part of the IT original technology development project of the Ministry of Knowledge Economy and the Ministry of Information and Telecommunication Research and Development. [Task management number: 2005-S-002-05, Title: Cognitive radio for improving spectrum use efficiency Technology development].

In the case of a Cognitive Radio (CR) system, the maximum transmission power that can be used by each communication device is determined by regulation. In this case, the maximum power value available in one cell may be different among communication devices, and thus all communication devices may not be able to communicate independently.

That is, communication devices having different transmission ranges of data exist in one communication cell, and a technique for transmitting data between communication devices having different transmission ranges is required.

One embodiment of the present invention is to provide a communication method and procedure to facilitate communication between communication devices having different communication ranges.

A management apparatus according to an embodiment of the present invention is a management apparatus for managing communication between a plurality of short range communication devices and a plurality of long range communication devices located in one cell and having different transmission ranges, wherein the first short range communication device is a network. An access resource allocator for allocating an access resource to a radio resource for downlink so as to make an association request; and a communication relay device for relaying relay data of the first short-range communication device among the plurality of long-range communication devices. At least one radio resource for uplink so that the communication relay device can relay the relay data to a second short range communication device or another long range communication device that is outside the transmission range of the first short range communication device. A relay resource allocator for allocating a relay resource of the at least one reel; It includes a receiving unit for receiving the relay data using a ray resource.

Short-range communication device according to an embodiment of the present invention includes a relay request unit for transmitting a signal for requesting communication to the long-range communication device and other short-range communication device located outside the transmission range to the management device; And

In response to the transmission, a radio unit for receiving a radio resource for the downlink from the management device, and a transmission unit for transmitting the relay data in synchronization with the allocated radio resource.

According to an embodiment of the present invention, a long range communication device may include a detector configured to detect whether a relay request signal from a first short range communication device exists in a radio resource for downlink allocated from a management device, and when the relay request signal is detected. And a relay data transmitter configured to demodulate and transmit relay data to be transmitted to a second short range communication device or another long range communication device outside the transmission range of the first short range communication device to a relay resource among uplink radio resources allocated from the management device. Include.

The long-range communication device according to an embodiment of the present invention allocates at least one access resource, at least one short-range communication device resource, and at least one relay resource to a packet in at least one of a time domain, a frequency domain, and a code domain. A resource allocation unit; And

And a transmitting unit transmitting the relay data of the first short range communication device to the second short range communication device or another long range communication device outside the transmission range of the first short range communication device by using the at least one relay resource.

A short range communication device according to an embodiment of the present invention accesses a network through at least one or more access resources allocated from a long range communication device, and transmits relay data using the short range communication device resource allocated from the long range communication device.

A control method of a management device according to an embodiment of the present invention is a management device for managing communication between a plurality of short-range communication device and a plurality of long-range communication device located in one cell and different transmission range, the first short-range communication Allocating an access resource to a radio resource for downlink so that the device can make an association request to a network; a communication relay device for relaying relay data of the first short-range communication device among the plurality of long-range communication devices; Selecting at least one of a radio resource for uplink so that the communication relay device can relay the relay data to a second short range communication device or another long range communication device that is outside the transmission range of the first short range communication device. Allocating a relay resource, and using the at least one relay resource And receiving the relay data from the communication relay device.

In a method of controlling a short range communication device according to an embodiment of the present invention, transmitting a signal for requesting communication to a long range communication device and another short range communication device located outside a transmission range to a management device, in response to the transmission, the management And allocating radio resources for downlink from the device, and transmitting relay data to the management device in synchronization with the allocated radio resources.

According to an embodiment of the present invention, communication devices having different transmission ranges can communicate without interfering with other communication devices.

1 is a block diagram of a management device (LRMD) 100 in accordance with one embodiment of the present invention.
2 is a block diagram of a short range communication device (SRD) 200 in accordance with one embodiment of the present invention.
3 is a block diagram of a long distance communication device (LRD) 300 in accordance with one embodiment of the present invention.
4 is a diagram illustrating an operation between a management device (LRMD) 410, a short range communication device (SRD) 430, and a long range communication device (LRD) 450 according to an embodiment of the present invention.
5 is a diagram illustrating allocation of access resources (SRD Access slots) and relay resources (SRD Relay slot) according to an embodiment of the present invention.
6 is a diagram illustrating resource allocation and data transmission according to the first embodiment of the present invention.
7 is a diagram illustrating resource allocation and data transmission according to the second embodiment of the present invention.
8 is a diagram illustrating resource allocation and data transmission according to the third embodiment of the present invention.
9 is a diagram illustrating resource allocation and data transmission according to the fourth embodiment of the present invention.
10 is a diagram illustrating a case in which a mobile short-range communication device according to an embodiment of the present invention exists.
11 is a diagram illustrating a case in which a short range communication device group (SRD group) is formed according to an embodiment of the present invention.
12 and 13 illustrate resource allocation and data transmission when a short range communication device group (SRD group) is formed according to an embodiment of the present invention.
14 and 15 are diagrams illustrating resource allocation and data transmission when a short range communication device group (SRD group) is formed according to another embodiment of the present invention.
16 is a block diagram of a long-distance communication device according to an embodiment of the present invention.
17 is a diagram illustrating resource allocation and data transmission in a network without a separate management device according to an embodiment of the present invention.
FIG. 18 is a diagram illustrating communication between communication devices in a network without a separate management device as shown in 17. FIG.
19 is a diagram illustrating a transmission and reception process in a network without a management device according to an embodiment of the present invention over time.
20 is a flowchart illustrating a control method of a management device (LRMD) according to an embodiment of the present invention.
21 is a flowchart illustrating a method of controlling a short range communication device (SRD) according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

In the case of the radio recognition system, the maximum available transmission power is determined according to the characteristics of the communication device by regulation. In this case, the maximum power value available in one cell may be different among communication devices, and thus all communication devices may not communicate with each other.

Therefore, in a system composed of communication devices having different communication ranges, a communication device having a relatively wide communication range (Long Range Device (LRD)) has a narrow communication range (short range device: Small Range Device). (SRD) allocates communication resources to relay data.

At this time, if there is a communication device that allocates communication resources to each communication device opportunistically or manages a system or a network, it is controlled by the corresponding communication device.

Here, the short range communication device may receive a signal from another long range communication device, but the long range communication device relaying data of the short range communication device may be opportunistically selected as it is unable to transmit a signal to the long range communication device. .

1 is a block diagram of a management device (LRMD) 100 in accordance with one embodiment of the present invention.

Referring to FIG. 1, a management device (LRMD) 100 manages communication between a plurality of short range communication devices and a plurality of long range communication devices located in one cell and different from each other in a transmission range, and the access resource allocating unit 110. , A selector 130, a relay resource allocator 150, and a receiver 170. In addition, the management device (LRMD) 100 may further include a short-range communication resource allocation unit 190.

The access resource allocating unit 110 connects the first short-range communication device to request the connection to the network by the communication relay device selected from the plurality of long-distance communication devices by a signal (connection request signal pattern) having the connection request data or pattern ( Allocates SRD Access slots to radio resources for downlink so that Association can be requested.

In order for a short-range communication device to initially attempt to access a network, a resource for transmitting a connection request signal pattern or access request data is required, and access resources (SRD Access slots) play a role therein. When the short-range communication device transmits the access request signal pattern or the access request data through the access resource, the long-distance communication device in the vicinity detects the access request signal pattern or the access request data transmitted through the access resource.

Here, the communication relay device refers to a long-distance communication device that serves as a relay that relays signals or relay data from a short-range communication device among the long-distance communication devices.

The selector 130 selects a communication relay device for relaying relay data of the first short-range communication device among the long-distance communication devices.

The communication relay device selected here may transmit data of the first short-range communication device when the transmission distance between the communication devices is different due to transmission power, antenna pattern, or other communication control condition. It relays to other short range communication device or long range communication device located outside.

In this case, the relay data refers to data to be transmitted by the short range communication device to another short range communication device or a long range communication device through the selected communication relay device after the network connection.

The selector 130 may select the communication relay device based on at least one of distance information from the first short range communication device, channel state information, and data transmission capacities of the plurality of long range communication devices.

The relay resource allocator 150 may relay the relay data selected by the selector 170 to another long range communication device including a second short range communication device or a management device that is outside the transmission range of the first short range communication device. At least one relay resource (SRD Relay slot) is allocated to the radio resource for the uplink.

Here, the peripheral long distance communication device that receives the access request signal or the access request data from the short range communication device is connected to the short range communication device transmitted through the access resources (SRD Access slots) using the relay resource (SRD Relay slot). Relay data transmitted through a signal or short-range communication resource (SRD slot) is relayed to the management device.

In this case, the relay resource allocator 150 may distinguish the relay data and the relay request signal according to the signal type of at least one relay resource.

In addition, the relay resource allocator 150 may relay the relay data by including the relay data in the data burst of the radio resource for the uplink.

In addition, the at least one relay resource is composed of a plurality of partial slots, and the communication relay device selected by the selector 130 relays relay data using any one of the partial slots.

The receiver 170 receives relay data from the communication relay apparatus selected by the selector 170 using a relay resource (SRD Relay slot).

The allocation of access resources and relay resources will be described later with reference to FIG. 5.

The short range communication resource allocator 190 allocates a short range communication device resource (SRD slot) to a radio resource for downlink, and at this time, the relay data is selected by the selecting unit 130 based on the allocated short range communication device resource. Send to the relay device.

When the communication relay device transmits a connection request signal pattern or connection request data for which the short-range communication device requests a relay through the access resource, to the management device, the management device that receives the request does not collide with the data allocated to the radio resource for the downlink. Allocate short-range communication device resources (SRD slots) so that the short-range communication device can send relay data to the communication relay device.

In addition, when the first short-range communication device requests peer-to-peer (P-to-P) communication to a third short-range communication device within a transmission range of the first short-range communication device, the short-range communication resource allocator 190 performs downlink. The short-range communication device resource may be allocated to either one of a radio resource and a radio resource for an uplink.

In this case, the relay data relayed through the communication relay device may include information on a communication environment between the first short range communication device and the third short range communication device.

2 is a block diagram of a short range communication device (SRD) according to an embodiment of the present invention. Referring to FIG. 2, a short range communication device (SRD) 200 may include a relay request unit 210 and a transmitter 230.

The relay request unit 210 transmits a signal for requesting communication to a long range communication device and another short range communication device located outside the transmission range, to the management device.

In response to the transmission of the relay requester 210, the transmitter 230 receives a radio resource for downlink from the management apparatus and transmits relay data in synchronization with the allocated radio resource.

In addition, the transmitter 230 may receive map data in accordance with downlink synchronization, and may include relay data in short-range communication device resources based on the map data and transmit the relayed data.

3 is a block diagram of a long distance communication device (LRD) 300 in accordance with one embodiment of the present invention. Referring to FIG. 3, the long distance communication device (LRD) 300 includes a detector 310 and a relay data transmitter 330.

The detector 310 detects whether a relay request signal from the first short-range communication device exists in the radio resource for the downlink allocated from the management device.

When the relay request signal is detected, the relay data transmitter 330 may include a second short-range communication device or a management device outside the transmission range of the first short-range communication device to a relay resource among uplink radio resources allocated from the management device. It demodulates and transmits relay data to be transmitted to another long distance communication device.

In this case, the relay data transmitter 330 may verify that an access resource (SRD access slot) is allocated to a radio resource for the downlink, and then demodulate and transmit the relay data.

In addition, the relay data transmitter 330 may transmit the relay request signal to another long distance communication device including a second short range communication device or a management device using at least one of a data burst or a relay resource of a radio resource of the long distance communication device. .

4 is a diagram illustrating an operation between a management device (LRMD) 410, a short range communication device (SRD) 430, and a long range communication device (LRD) 450 according to an embodiment of the present invention. According to an embodiment of the present invention, an access resource (SRD Access slots) and a relay resource (SRD Relay slot) are allocated.

Referring to FIGS. 4 and 5, operations between devices when the short-range communication device (SRD) 430 attempts to connect to a network for the first time are as follows.

First, a management device (LRMD) 410 is a device that manages communication between a plurality of short-range communication devices and a plurality of long-range communication devices located in one cell and having different transmission ranges, and managing resources or networks. For example, it may be configured by a long distance communication device (LRD).

The short-range communication device 430 refers to a communication device capable of receiving a signal from another long-distance communication device 450 but not transmitting a signal to the long-range communication device 450.

In addition, the long-range communication device 450 for relaying the signal of the short-range communication device is different from the conventional relay communication device because it is not necessary to retransmit the signal of the other long-range communication device 450 to the short-range communication device.

The management device 410 is a downlink of at least one of a time domain, a frequency domain, or a code domain so that the short-range communication device SRD can transmit a signal requesting association with other communication devices periodically or randomly. Allocates an access resource (SRD Access slot) 515 to a radio resource for the link 510.

Here, the downlink 510 may be defined as a section for transmitting data to another communication device (for example, a short range communication device or a long range communication device) managed by the management device 410. A short range communication device (SRD slot) is allocated so that the short range communication device can transmit relay data to the communication relay device without colliding with data allocated to the radio resource for the downlink.

The management device 410 allocates an access resource (SRD Access Slot) 515 to a radio resource for the downlink 510 and the short distance and the data allocated to the radio resource for the downlink transmitted by the management device 410. An access resource (SRD Access slot) 515 may be configured and allocated so that relay data to be transmitted to the communication relay device to relay the data of the communication device does not collide.

At this time, the access resource (SRD Access Slot) 515 is mapped by a downlink map (DL MAP) 511 included in the radio resource for the downlink, the relay resource (SRD Relay Slot) 551 also downlink It is mapped and allocated by an uplink map (UL MAP) 513 included in a radio resource for the purpose.

In addition, the management device 410 may be relayed to at least one of a time domain, a frequency domain, or a code domain so that relay data of the short-range communication device 430 may be relayed and received in a radio resource for the uplink 550. A relay resource (SRD Relay Slot) 551 is allocated. Here, the uplink 550 may be defined as a section in which a communication device other than the management device (for example, a long range communication device or a short range communication device) transmits a signal to the management device.

The management device 410 configures the relay resource 551 or transmits the relay resource to the relay resource so that the relay resource SR can separately receive at least one relay request signal or at least one relay data. The shape of the

The short-range communication device 430 may synchronize with a radio resource for the downlink 510 of the management device 410 previously transmitted.

In addition, the short-range communication device 430 may transmit an access request signal in synchronization with an assigned SRD access slot 515 of the allocated downlink 510.

In this case, the access request signal transmitted by the short range communication device 430 may include a signal or symbol that is predefined so that another short range communication device receiving the relayed signal performs synchronization and estimates a channel.

In addition, the connection request signal transmitted by the short-range communication device 430 may be transmitted at least in a specific signal pattern or in the form of relay data including a predefined or known signal so that another long-distance communication device can demodulate the transmitted relay data. Can be.

The long-distance communication device 450 connected in the cell confirms that an access resource (SRD Access slot) 515 is allocated among the downlinks 510, and then, there exists a connection request signal pattern in the corresponding access resource 515. The presence or absence of demodulation of the transmitted data can be determined.

If the access request signal pattern exists in the corresponding access resource 515, the long distance communication device 450 transmits information indicating whether the access request signal pattern is detected or demodulated data to a relay resource (SRD Relay slot).

At this time, if the long distance communication device 450 takes a long time to detect the connection request signal pattern or demodulate the data, the long distance communication device 450 is re-allocated after the currently allocated relay resource (SRD Relay slot) 551 Other relay resources (SRD Relay slot) can be used.

The relay request signal detected by the at least one long-range communication device 450 in the access resource (SRD Access slot) 515 may be relayed to another short-range communication device by using a relay relay slot (551). Can be.

At this time, the short-range communication device 430 may receive a relay request signal or relay data of the user (short-range communication device) transmitted to the relay resource (SRD Relay slot) 551, and may confirm that the own signal is being transmitted.

If it is determined that the relay request signal cannot be accurately determined due to collision with another signal, the short range communication device 430 may prepare to transmit the relay request signal again using the next frame.

The management device 410 may confirm that the at least one short-range communication device 430 is requesting access by a signal received through the relay resource (SRD Relay slot) 551.

The management device 410 may separately receive one or more relay request signals or one or more relay data transmitted to a relay resource (SRD Relay slot).

The management device 410 may include a time domain, a frequency domain, or a code domain so that the short-range communication device 430 attempting to access a frame after or after the relay request signal or the relay data is transmitted may transmit data without interference from other signals. Short-range communication device resources (SRD slots) may be allocated to at least one region.

The operation after the short-range communication device first attempts to connect to the network by the above process will be described with reference to FIGS. 6 to 9. 6 to 9, components having the same name are considered to have the same functions and actions, and repeated descriptions of the components will be omitted.

6 is a diagram illustrating resource allocation and data transmission according to the first embodiment of the present invention.

Referring to FIG. 6, it can be seen that short-range communication device resource (SRD slot) 617 is allocated and relay data (SRD data) is transmitted through a relay resource (SRD Relay slot) 651.

The management device 410 confirming the connection request of the short range communication device 430 allocates a short range communication device resource (SRD slot) 615 to the downlink 610 so that a signal can be relayed and received. This allows the short-range communication device to transmit relay data to the communication relay device for transmission to other long-range communication devices, including other short-range communication devices or management devices.

In this case, the management device 410 allocates a short range communication device resource (SRD slot) 617 to the downlink 610, and the data and the short distance allocated to the radio resource for the downlink transmitted by the management device 410. Short-range communication device resources (SRD slots) 617 may be allocated to radio resources for the downlink so that relays of the communication devices do not collide.

Allocation of short-range communication device resources (SRD slot) 617 is also mapped by DL MAP 611 assigned to radio resources of downlink 610.

Also, the management device 410 may allocate an access resource (SRD access slot) 615 to a radio resource for the downlink 610 together with a short range communication device resource (SRD slot) 617.

The management device 410 may allocate a relay resource (SRD Relay slot) 651 to a radio resource for the uplink 650 so that a signal can be relayed and received.

At this time, the management device 410 is different from the relay resources (SRD Relay slot) as shown in Figure 7 so that different signals can be independently transmitted in allocating a relay resource (SRD Relay slot) to the radio resource for the uplink. It may be divided into slots 751 and 755 having a personality.

7 is a diagram illustrating resource allocation and data transmission according to the second embodiment of the present invention.

Referring to FIG. 7, a short range communication device resource (SRD slot) 717 is allocated to a radio resource for the downlink 710, and a data burst 751 of a radio resource for the uplink 750. It can be seen that the relay data (SRD Relay Data) 755 is transmitted through.

In addition, the management device 410 may allocate at least one SRD relay slot 851 and 853 to a radio resource for the uplink 850 as shown in FIG. 8.

8 is a diagram illustrating resource allocation and data transmission according to the third embodiment of the present invention.

Referring to FIG. 8, short-range communication device resources (SRD slots) 817 are allocated to radio resources for the downlink 810, and a plurality of relay resources (SRD Relay slots) 851 and 853 in the radio resources for the uplink. You can see that the relay data is transmitted through.

In this case, the short-range communication device 430 may receive information of the downlink map (DL MAP) 811 in synchronization with a radio resource for the downlink 810.

The short range communication device 430 transmits relay data to other long range communication devices including other short range communication devices or management devices through the short range communication device resource (SRD slot) 817 defined in the downlink map (DL MAP) 811. Can be transmitted to the communication relay device.

The long-range communication device selected as the communication relay device for transmitting data to another short-range communication device may include at least one of an area allocated to transmit its data or an SRD relay slot 851 and 853 allocated to the uplink 850. The relay request signal and relay data are transmitted to one area.

In addition, the management device 410 receives the relay request signal and the relay data through a data transmission area of a radio resource for the uplink 850 or one of the relay resources (SRD Relay slots) 851 and 853.

In addition, the management device 410 may define an uplink to transmit relay data 953 and 957 to the data bursts 951 and 955 of the long-distance communication device 450 as shown in FIG. 9.

9 is a diagram illustrating resource allocation and data transmission according to the fourth embodiment of the present invention.

Referring to FIG. 9, a short range communication device resource (SRD slot) is allocated to a radio resource for the downlink 910 and a plurality of data bursts 951 and 955 allocated to the radio resource for the uplink 950. It can be seen that the relay data (953, 957) is delivered through.

The management device 410 may allocate at least one data burst 951 and 955 to transmit the relay request signal and the relay data.

In addition, the management device 410 may select the long-distance communication device 450 to relay the signal of the short-range communication device 430 requesting a connection.

Also, the management device 410 may set at least one long distance communication device 450 as a relay communication device so that the plurality of long distance communication devices 450 may transmit the same relay request signal and relay data.

The management device 410 is a long-distance communication device that does not transmit or receive data with the current management device, a long-distance communication device that transmits / receives data with the current management device but does not have any problem in transmitting or receiving data, a long-range communication device rich in channel capacity, and a short-range communication device. Some of the long range communication devices closest to the long range communication device, the short range communication device having the best communication channel environment, and the long distance communication device having the best communication channel with the management device (e.g., distance information, channel status information, or long distance communication). At least one long distance communication device that satisfies the data transmission capacity of the communication device, etc. may be set as a relay communication device for relaying relay data of the short range communication device.

In this case, the management device 410 may obtain a reception gain by collecting signals transmitted from at least one communication relay device by signals of the same short-range communication device 430.

This is a diversity effect, and since the same data can be received from multiple communication relay devices, even if a signal received from one communication relay device has an error, the signals received from the other communication relay devices may be correct. When transmitting, it is possible to receive the correct signal.

In addition, even when an unknown signal is received due to insufficient transmission power, transmission powers of the remaining signals are summed to represent an accurate signal originally intended.

10 is a diagram illustrating a case in which a mobile short-range communication device according to an embodiment of the present invention exists.

Referring to FIG. 10, the management device 1010 may receive a message that a communication device is mobile, or have long distance communication devices (LRDs) in which the same short range communication device (SRD) 1030 is present at another location ( When detected from 1050 and 1070, it may be confirmed that the short range communication device (SRD) 1030 is mobile.

In addition, the management device 1010 detects a long range communication device (LRD) 1050 or a short range communication device (SRD) present in a movable position of the short range communication device (SRD) 1030. 1070 may be allocated as an additional relay communication device.

The at least one long range communication device (LRD) 1050, 1070 may transmit the relay request signal and the relay data from the same short range communication device using radio resources for at least one uplink.

When no signal from the short range communication device (SRD) 1030 is detected or an error occurs in the received short range communication device (SRD) signal, the long distance communication device (LRD) 1050 stops or manages to perform as a relay communication device. The device 1010 may be informed of this fact.

If the management device 1010 does not detect a signal from the short range communication device (SRD) 1030 or if an error occurs in the signal of the received short range communication device (SRD) 1030, the management device 1010 ( 1050 may be excluded from the relay communication device.

In addition, in the case of a communication device capable of moving a short-range communication device, hand-off is possible between neighboring long-range communication devices, and cooperative communication is also possible.

11 is a diagram illustrating a case in which a short range communication device group (SRD group) is formed according to an embodiment of the present invention. An operation when a short range communication device group (SRD group) is formed will be described with reference to FIGS. 12 to 15.

12 to 15 are diagrams illustrating resource allocation and data transmission when a short range communication device group (SRD group) is formed according to embodiments of the present invention.

12 and 13, when a short-range communication device group (SRD group) is formed, short-range communication device resources (SRDs slots) 1217, 1219, 1317, and 1319 are included in radio resources for the downlinks 1210 and 1310. You can see this assigned.

In addition, referring to FIGS. 14 and 15, when a short range communication device group (SRD group) is formed, a short range communication device corresponds to a radio resource for the downlinks 1410 and 1510 and a radio resource for the uplinks 1450 and 1550. It can be seen that resources (SRDs slots) 1417, 1453, 1517, and 1553 are allocated.

The management device 1110 may include a time domain as shown in FIG. 12 or 13 when at least one short-range communication device (SRD) 1130, 1150, 1170 requests peer-to-peer communication. Short-range communication device resources (SRD slots) 1217, 1219, 1317, and 1319 may be allocated to radio resources for the downlinks 1210 and 1310 of at least one of the frequency domain and the code domain.

In addition, as shown in FIG. 14 or FIG. 15, the management device 1110 may include short-range communication device resources (SRD) in the downlinks 1410 and 1510 and the uplinks 1450 and 1550 of at least one of a time domain, a frequency domain, and a code domain. slots (1417, 1517, 1453, 1553) can be allocated.

A short-range communication device group (SRD group) composed of short-range communication devices (SRDs) 1130, 1150, and 1170 is a short-range communication device (SRD) and a management device (LRMD) capable of communicating with a long-range communication device (LRD) 1190. And a short range communication device (SRD) capable of receiving a signal of a CDMA), a long range communication device (LRD) 1190, and a short range communication device (SRD) that cannot communicate with a management device (LRMD) 1110.

The management device 1110 may allocate at least one short range communication device resource (SRD slot) when at least one short range communication device group (SRD group) exists.

The management device 1110 may manage a short range communication device group (SRD Group) through a representative short range communication device (SRD) of the short range communication device group (SRD Group). That is, for example, the short range communication device 2 1150 and the short range communication device 3 1170 included in the short range communication device group may be managed through the short range communication device 1 1130.

The management device 1110 may manage at least one short range communication device (SRD) or all short range communication devices (SRD) 1130, 1150, and 1170 of a short range communication device group (SRD Group).

In addition, short-range communication devices (SRDs) of the short-range communication device group (SRD Group) may perform communication in the allocated short-range communication device resources (SRD slot).

The management device 1110 may request and receive various communication environment state information of a short range communication device group (SRD Group) in the form of relay data or a relay request signal.

Meanwhile, the network may be configured using a packet method without a separate management apparatus in the network, which will be described with reference to FIGS. 16 to 19.

16 is a block diagram of a long-distance communication device according to an embodiment of the present invention. Referring to FIG. 16, a long-distance communication device 1600 according to an embodiment for transmitting data in a packet manner in a network without a management communication device includes a resource allocator 1610 and a transmitter 1630.

The resource allocator 1610 allocates at least one access resource, at least one short-range communication device resource, and at least one relay resource to a packet in at least one of a time domain, a frequency domain, and a code domain.

In this case, the resource allocator 1610 may allocate at least one short-range communication device resource to the first short-range communication device when receiving a relay request signal or relay data through at least one access resource.

The transmitter 1630 transmits the relay data of the first short range communication device to the second short range communication device or another long range communication device outside the transmission range of the first short range communication device by using the at least one relay resource.

The short-range communication device according to the embodiment for transmitting data in a packet manner in a network without a management communication device operating with the long-range communication device, accesses the network through at least one or more access resources allocated from the long-distance communication device. Data is transmitted using short-range communication device resources allocated from the long-range communication device.

FIG. 17 illustrates resource allocation and data transmission in a network without a separate management device according to an embodiment of the present invention. FIG. 18 illustrates communication between communication devices in a network without a separate management device as shown in FIG. It is a diagram showing.

19 is a diagram illustrating a transmission and reception process in a network without a management device according to an embodiment of the present invention over time.

Referring to FIG. 17, it can be seen that a short range communication device (SRD) accesses a network or transmits data using a packet of a long range communication device (LRD packet).

In addition, referring to FIG. 18, a process of transmitting and receiving a signal through a plurality of short-range communication devices (SRDs) may be seen.

Referring to FIG. 19, a plurality of short-range communication devices (SRDs) may see a time flow for a process of transmitting and receiving a signal through a long-range communication device (LRD).

The long-range communication device (LRD) 1810 may include at least one of a time domain (TDM), a frequency domain (FDM), or a code domain (CDM) of a packet transmitted by the long distance communication apparatus (LRD) 1810. One access resource (SRD access slot) 1715, 1915, 1925, at least one short range communication device resource (SRD slot) 1735, 1935, 1945, at least one short range communication device group resource (SRDs Slot), and At least one relay resource (SRD relay slot) 1755, 1955, 1965 may be allocated.

The short-range communication devices SRD1 and SRD2 1830 and 1870 may connect to the network through at least one or more access resources 1715, 1915, and 1925.

Long-range communication devices (LRD1, LRD2) 1810, 1850, which have received a relay request signal or relay data through an access resource (SRD access slot) 1915.1925, allocate short-range communication device resources (SRD slots 1935, 1945). do.

The short range communication devices SRD1 and SRD2 1830 and 1870 transmit data to the allocated short range communication device resources (SRD slots).

The long range communication device (LRD) 1810 uses at least one other long range communication device (LRD) 1850 or at least one other short range communication device (SRD) using a relay resource (SRD Relay slot) 1955, 1965 ( 1830 or 1870 may be signaled.

20 is a flowchart illustrating a control method of a management device (LRMD) according to an embodiment of the present invention.

Referring to FIG. 20, a control method of a management apparatus relaying communication between a plurality of short range communication devices and a plurality of long range communication devices located in one cell and having different transmission ranges is as follows.

An access resource is allocated to a radio resource for downlink (2010) so that the first short-range communication device can make an association request to the network. Thereafter, the management device selects a communication relay device for relaying relay data of the first short-range communication device among the plurality of long-range communication devices (2030).

In this case, the communication relay device may be selected based on at least one of distance information from the first short-range communication device, channel state information, and data transmission capacity of the long-range communication device.

The management device may include at least one of the at least one radio resource for the uplink so that the communication relay device selected through step 2030 may relay the relay data to a second short range communication device or another long range communication device that is outside the transmission range of the first short range communication device. Allocates a relay resource (2050).

The management device receives relay data from the communication relay device using the at least one relay resource allocated in step 2050 (2070).

In this case, in operation 2050, at least one relay resource may be configured as a plurality of partial slots, and relay data may be relayed using any one of the partial slots.

21 is a flowchart illustrating a method of controlling a short range communication device (SRD) according to an embodiment of the present invention.

Referring to FIG. 21, in a method of controlling a short range communication device, a signal for requesting communication to a long range communication device and another short range communication device located outside a transmission range is transmitted to a management device (2110), and in response to the transmission, the management device In step 2130, a radio resource for downlink is allocated. Thereafter, the short-range communication device transmits relay data to the management device in synchronization with the radio resource allocated in step 2130.

The control method of the management device and the short-range communication device according to the embodiment of the present invention described with reference to FIGS. 20 through 21 are steps processed in time series in the management device and the short-range communication device described with reference to FIGS. 1 through 19. Can be configured.

Therefore, even if omitted below, the above descriptions of the management device and the short-range communication device described with reference to FIGS. 1 to 19 also apply to the control method of the management device and the short-range communication device according to an embodiment of the present invention. .

The methods according to the present invention can be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be construed as being limited to the embodiments described, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: management device (LRMD)
110: access resource allocation unit
130: selection unit
150: relay resource allocation unit
170:
190: short-range communication resource allocation unit
200: short range communication device (SRD)
210: relay request unit
230: transmission unit
300: long distance communication device (LRD)
310: detection unit
330: relay data transmission unit

Claims (19)

A management apparatus for managing communication between a plurality of short range communication devices and a plurality of long range communication devices located in one cell and having different transmission ranges,
An access resource allocator configured to allocate an access resource to a radio resource for downlink so that the first short-range communication device can make an association request to the network;
A selection unit for selecting a communication relay device for relaying relay data of the first short-range communication device among the plurality of long-range communication devices;
Allocating at least one relay resource to a radio resource for uplink so that the communication relay device can relay the relay data to a second short range communication device or another long range communication device that is outside the transmission range of the first short range communication device. A relay resource allocation unit; And
Receiving unit for receiving the relay data using the at least one relay resource
Management device comprising a. The method of claim 1, wherein the selection unit,
And selecting the communication relay device based on at least one of distance information from the first short range communication device, channel state information, and data transmission capacity of the plurality of long range communication devices. The method of claim 1, wherein the relay resource allocation unit,
And managing the relay data and the relay request signal according to a signal type of the at least one relay resource. The method of claim 1,
And a short range communication resource allocator for allocating short range communication device resources to the radio resources for the downlink and transmitting the relay data to the communication relay device based on the short range communication device resources. The method of claim 1,
The at least one relay resource is composed of a plurality of partial slots,
The communication relay device
And relaying the relay data using any one of the plurality of partial slots. The method of claim 1, wherein the relay resource allocation unit,
And relaying the relayed data to the data burst of the radio resource for the uplink. The method of claim 4, wherein the short-range communication resource allocation unit,
When the first short range communication device requests peer-to-peer communication to a third short range communication device within a transmission range of the first short range communication device,
And allocating the short-range communication device resource to either the radio resource for the downlink or the radio resource for the uplink. The method of claim 7, wherein
And the relay data includes information about a communication environment between the first short range communication device and the third short range communication device. A relay request unit for transmitting a signal for requesting communication to a long range communication device and another short range communication device located outside a transmission range to a management device; And
In response to the transmission, the transmission unit for receiving a radio resource for the downlink from the management device, and transmits the relay data in synchronization with the allocated radio resource
Short range communication device comprising a. The method of claim 9, wherein the transmission unit,
A short range communication device for receiving map data in synchronization with the downlink and transmitting the relayed data to a short range communication device resource based on the map data. A detector for detecting whether a relay request signal from the first short-range communication device exists in a radio resource for downlink allocated from the management device; And
When the relay request signal is detected, relay data to be transmitted to a second short range communication device or another long range communication device outside the transmission range of the first short range communication device to a relay resource among uplink radio resources allocated from the management device. Relay data transmission unit for demodulation and transmission
Long range communication device comprising a. The method of claim 11, wherein the relay data transmission unit,
And confirming that an access resource is allocated to the radio resource for the downlink, and then demodulating and transmitting the relay data. The method of claim 11, wherein the relay data transmission unit,
And transmitting the relay request signal to the second short range communication device or another long range communication device using at least one of a data burst of a radio resource of the long range communication device or the relay resource. A resource allocator for allocating at least one access resource, at least one short-range communication device resource, and at least one relay resource to a packet in at least one of a time domain, a frequency domain, and a code domain; And
Transmitter for transmitting the relay data of the first short-range communication device to the second short-range communication device or another long-range communication device outside the transmission range of the first short-range communication device using the at least one relay resource.
Lt; / RTI >
The first short-range communication device
Connecting to a network through the at least one access resource allocated from the long range communication device, and transmitting data using the at least one short range communication device resource allocated from the long range communication device. 15. The apparatus of claim 14,
And when the relay request signal or the relay data is received through the at least one access resource, allocate the at least one short range communication device resource to the first short range communication device. A control method of a management apparatus which manages communication between a plurality of short range communication apparatuses and a plurality of long range communication apparatuses located in one cell and having different transmission ranges,
Allocating an access resource to a radio resource for the downlink so that the first short-range communication device can make an association request to the network;
Selecting a communication relay device for relaying relay data of the first short-range communication device among the plurality of long-range communication devices;
Allocating at least one relay resource to a radio resource for uplink so that the communication relay device can relay the relay data to a second short range communication device or another long range communication device that is outside the transmission range of the first short range communication device. step; And
Receiving the relay data from the communication relay device using the at least one relay resource
Control method of the management device comprising a. The method of claim 16, wherein the selecting of the communication relay device comprises:
Selecting based on at least one of distance information from the first short range communication device, channel state information, and a data transmission capacity of the long range communication device.
The control method of the management device further comprising. 17. The method of claim 16,
Configuring the at least one relay resource into a plurality of partial slots; And
Relaying the relay data using any one of the partial slots
Control method of the management device comprising a. Transmitting a signal to the management device requesting communication to a long range communication device and another short range communication device located outside the transmission range;
In response to the transmission, allocating a radio resource for a downlink from the management apparatus; And
Transmitting relay data to the management device in synchronization with the allocated radio resource;
Control method of a short-range communication device comprising a.

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