KR101349832B1 - Method for transmitting and receiving signals using multi-band rf - Google Patents

Abstract

A method for transmitting and receiving a multi-band radio frequency signal is disclosed. That is, unit information of a specific layer corresponding to a layer higher than a physical layer (PHY) is transmitted through a plurality of frequency allocation bands managed by one entity corresponding to the specific layer, and the plurality of frequency allocations are transmitted. It is proposed to include a process of transmitting control information for classifying each band. In this case, each of the plurality of frequency allocation bands managed by the one entity has a frequency allocation band size allocated for a specific service according to a predetermined frequency policy, and the control for distinguishing each of the plurality of frequency allocation bands. The information may include a second identifier obtained by converting a first identifier for distinguishing between the plurality of frequency allocation bands in the physical layer for mutual discrimination within a plurality of frequency allocation bands managed by the one entity in the specific layer. To include.

Multi-band radio frequency

Description

[0001] METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RF [0002]

The following description relates to a method of defining a multi-band identifier in order to efficiently manage the multi-band radio frequency in a communication system supporting the multi-band radio frequency (RF), signaling the same, and transmitting and receiving a signal.

In the following description, a DL (DL) situation in which a signal transmitted from a base station is transmitted to one or more terminals is mainly described. It should be appreciated, however, that the principle described below can be applied as it is simply in the reverse order of the downlink even in the uplink (UL) situation.

In order to efficiently use a multi-band or a multi-carrier, multiple carriers (multiple frequency allocation bands) are managed by one entity corresponding to a specific layer above the physical layer. Techniques have been proposed.

1 (a) and 1 (b) are diagrams for conceptually explaining a method of transmitting and receiving a multi-band RF-based signal in terms of a transmitting side and a receiving side.

PHY0, PHY1, PHY n-2 and PHY n-1 in FIG. 1 (a) and FIG. 1 (b) represent multi-bands according to the present invention, and each band includes a specific service according to a predetermined frequency policy (FA) size to allocate to the base station. For example, PHY0 (RF carrier 0) may have a size of a frequency band allocated for general FM radio broadcasting, and PHY1 (RF carrier 1) may have a frequency band size allocated for mobile communication. As described above, each frequency band may have different frequency band sizes depending on the respective frequency band characteristics. In the following description, it is assumed that each frequency band FA has a size of A [MHz] for convenience of explanation. In addition, each frequency allocation band may be represented by a carrier frequency for using a baseband signal in each frequency band, hereinafter, each frequency allocation band is referred to as a "carrier frequency band" or simply "carrier" when there is no confusion. It will be referred to.

In order to transmit a signal through multiple bands as shown in FIG. 1 (a) and to receive signals through multiple bands as shown in FIG. 1 (b), all transmitters / receivers use an RF module . In Fig. 1, "MAC" is determined by the base station regardless of DL and UL.

In short, the present technology allows one particular layer entity, e.g., one MAC entity (hereinafter simply referred to as "MAC" when there is no confusion), to manage / operate a plurality of RF carriers, The technology of transmitting and receiving. In addition, the RF carriers managed in one MAC need not be contiguous with each other. Therefore, according to this technology, there is an advantage that it is more flexible in terms of resource management.

For example, the following frequency uses are assumed.

2 is a diagram illustrating an example of frequency allocation in a multi-band supporting communication method.

In Fig. 2, FA0 to FA7 can be managed by RF0 to RF7. In the example of FIG. 2, it is assumed that FA0, FA2, FA3, FA6, and FA7 are already allocated to existing specific communication services. On the other hand, it is assumed that available RF1 (FA1), RF4 (FA4), and RF5 (FA5) can be effectively managed by one MAC (MAC # 5). Here, since the RF carriers constituting one MAC may not be adjacent to each other as described above, frequency resources can be more effectively managed.

In the downlink reference, an example of the following base station / terminal scenario can be heard with respect to the concept of the multi-band supporting method described above.

3 is a diagram illustrating an example of a scenario in which communication is performed between one base station and a plurality of terminals in a multi-band supporting method.

In FIG. 3, it is assumed that the terminals 0, 1 and 2 are multiplexed with each other. The base station 0 transmits a signal through a frequency band managed by a carrier of RF0 and RF1. In addition, the terminal 0 has a capability of receiving only RF0, and the terminal 1 has a capability of receiving both RF0 and RF1, and the terminal 2 has a capability of receiving both RF0, RF1, and RF2 I suppose.

Herein, since the base station transmits only RF0 and RF1, the terminal 2 receives signals only for RF0 and RF1.

However, the multi-band based communication scheme as described above is somewhat conceptually defined, and there is no specific definition of an identifier definition method and a signaling method for more efficiently managing each frequency allocation band.

In order to solve the above problems, an embodiment of the present invention defines a method for defining identification information of a multiple frequency band and a method for efficiently signaling the same in a multi-frequency band-based communication system, and improved signal transmission and reception using the same I would like to suggest a method.

In an aspect of the present invention for solving the above problems, a plurality of units in which unit information of a specific layer corresponding to a higher layer than a physical layer (PHY) is managed by one entity corresponding to the specific layer is provided. Transmitting on a frequency allocation band; And transmitting control information for identifying each of the plurality of frequency allocation bands, wherein each of the plurality of frequency allocation bands managed by the one entity is allocated for a specific service according to a predetermined frequency policy. The control information for classifying each of the plurality of frequency allocation bands has a frequency allocation band size, and includes a first identifier for distinguishing the plurality of frequency allocation bands from the physical layer to the one entity in the specific layer. The present invention proposes a signal transmission method comprising converting a second identifier to include a second identifier to distinguish between the plurality of frequency allocation bands managed by the second identifier.

In this case, the control information may be transmitted through any one or more of a preamble or a control signal, including the first identifier and the second identifier for each of a plurality of frequency allocation bands managed by the one entity. have.

In addition, when the control information is transmitted through the preamble, the control information may be distinguished from each other by different preamble codes or preamble timing offsets. In this case, the preamble timing offset may mean that the preamble timing offset is applied as a timing offset of the entire frame including the preamble.

Further, control information for each of the plurality of frequency allocation bands managed by the one entity may be separately defined and transmitted for each of the plurality of frequency allocation bands. Alternatively, the control information managed by the one entity A plurality of frequency allocation bands may be divided into a primary carrier frequency band and a subsidiary carrier frequency band, and the primary carrier frequency band may be set to include control information for a predetermined number of auxiliary carrier frequency bands. have.

In addition, the primary carrier frequency band may be plural, and in this case, the plurality of primary carrier frequency bands may be used to transmit information on a predetermined number of auxiliary carrier frequency bands.

On the other hand, in another aspect of the present invention for solving the above problems, the unit information of a specific layer corresponding to a layer higher than the physical layer (PHY) is managed by one entity corresponding to the specific layer. Receiving through a plurality of frequency allocation bands; And receiving control information for distinguishing each of the plurality of frequency allocation bands, wherein each of the plurality of frequency allocation bands managed by the one entity is allocated for a specific service according to a predetermined frequency policy. The control information for classifying each of the plurality of frequency allocation bands has a frequency allocation band size and includes: a first identifier for distinguishing between the plurality of frequency allocation bands in the physical layer by the one entity in the specific layer; Provided is a signal receiving method comprising information converted to a second identifier for mutual discrimination in a plurality of managed frequency allocation bands.

According to each embodiment of the present invention as described above, it is possible to more efficiently manage a plurality of carrier frequency bands managed by one entity, and the process of receiving a signal through a plurality of carriers more easily the receiving side Can be set to

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced.

The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details. In some instances, well-known structures and devices are omitted or shown in block diagram form around the core functions of each structure and device in order to avoid obscuring the concepts of the present invention. In the following description, the same components are denoted by the same reference numerals throughout the specification.

As described above, the present invention provides an identifier (ID) method for effectively managing a plurality of RF carriers through a single MAC and a method of signaling the same. In the following description, the medium access control (MAC) layer is used as a generic term for a layer (eg, a network layer) having a higher concept than the physical (PHY) layer (layer 1) in the OSI 7 layer. However, it is not necessarily limited to the MAC layer. In addition, in the following description, although the multiband RFs show an adjacent example, the multiband according to the present invention does not necessarily need to be configured with physically adjacent RF carriers as described above with reference to FIG. 2. In order to simplify the description, only the cases where the bandwidths of the RF carriers are equal to each other have been described. However, the present invention does not exclude the case where the bandwidths of the frequency bands managed by the RF carriers are different from each other. For example, RF0 is 5 MHz and RF1 is 10 MHz, and these RF frequency bands are managed by one MAC entity.

In addition, in the present invention, the RF carriers may be RF carriers of the same system, but may be RF carriers to which another RAT (Radio Access Technology) is applied. For example, it is assumed that RF0, RF1 are LTE technology, RF2 is IEEE 802.16m technology, and RF3 is GSM technology.

In one embodiment of the present invention, it is proposed to convert a frequency band position in a real physical layer managed by one MAC into a logical index and manage the same. In addition, it is assumed that the limit of the number of RF carriers managed by one MAC in one system is M maximum.

In detail, the RF carriers managed by MAC # 5 in FIG. 2 will be described as an example.

In the example of FIG. 2, it is assumed that the maximum number of RF carriers managed by one MAC is three. In addition, it is assumed that each RF carrier is named RF 1, 4, and 5, which are frequency band index values on an absolute basis. In this case, according to the present embodiment, RF 1, 4, and 5 representing each physical frequency index may be converted into 0, 1, and 2 as a logical index and managed.

Accordingly, there is a need for a method for signaling information on the carrier ID according to the present embodiment to a receiving side. In some cases, it may be necessary to signal the maximum number of carriers managed in one MAC.

When the maximum number of carriers managed in one MAC is M, in this embodiment, 1) a method of informing a preamble for an ID signaling method, and 2) a common control channel or a broadcast channel. It is proposed to transmit through a (broadcast channel). In this case, the preamble ID signaling may be performed by including different signatures in the preamble and transmitting an offset in the preamble transmission timing. The offset of the preamble transmission timing may be interpreted as giving an offset to the transmission timing of the entire frame including the preamble as well as the preamble itself.

In the above example, for convenience, it is assumed that one carrier has one carrier ID. However, one or more physical carriers may be bundled and defined as one logical carrier ID. In addition, the preamble here means a signal transmitted on the downlink synchronization channel.

First, a description will be given of a method of signaling information on a carrier ID as described above and optionally information on the number of carriers managed by one MAC through a preamble.

As an example of a method of informing the carrier ID described in the above-described example, an embodiment of the present invention proposes a method of differently assigning a signature of each carrier ID. Specifically, as a method of differently marking each carrier ID, a method of allocating different codes for each carrier ID, a preamble transmission timing, or a transmission timing offset of the entire frame is proposed.

In the description of this embodiment, one preamble is transmitted per carrier for convenience, but a plurality of preambles may be transmitted per carrier.

In addition, with respect to the synchronization channel structure such as P-SCH and S-SCH, which are structures to be used in 3GPP LTE evolution, the same concept as described above is considered when the P-SCH and S-SCH are grouped together as a preamble. Applicable

As a more specific embodiment, the following describes a method of allocating different codes for each carrier ID.

First, the present embodiment proposes a method of representing different carrier IDs through different codes. Typically, the preamble is used for detecting a cell ID. For example, if it is necessary to distinguish a total of 114 cell IDs, it is required to be distinguished by at least 114 different codes, and according to the present embodiment, if additional 4 carrier IDs are to be distinguished, a total of 456 (= 114 * 4) different code assignments are required. Here, different codes are codes that can be identified from each other, and specific types of codes such as code combinations having a correlation value of less than a certain level, a cyclic shift sequence set, and a sequence set covered by an orthogonal sequence need not be particularly limited. .

In addition, another embodiment of the present invention using the above-described concept proposes a method of separately using carriers representing respective frequency allocation bands according to use.

Specifically, this embodiment proposes to define one or more carriers among the plurality of carriers as primary carriers. This primary carrier is a carrier that attempts to find the first time when the terminal performs initial cell search or initial neighbor cell search. Typically, this carrier is broadcast information, common control signal, system bandwidth, or multi-carrier configuration. It can be used for transmitting a system configuration, etc., which informs the configuration. In this case, the terminal only needs to identify whether the corresponding carrier is a primary carrier or another carrier (hereinafter, referred to as a subsidiary carrier).

In this case, it is preferable that two codes are additionally allocated to distinguish the use of each carrier. do. In this case, it should be noted that the two codes additionally allocated are not used to distinguish the carrier ID in the above-described example. In this example, for example, when the number of cell IDs is 114, the total number of necessary codes is 228 (= 114 * 2).

Hereinafter, as another embodiment of the present invention, a method of classifying a carrier ID using a preamble timing offset will be described.

For example, assume a multi-carrier support system in which a primary carrier is defined, and assume that the number of carrier IDs (including the primary carrier) is N carriers.

4 is a diagram for describing a method of classifying a carrier ID using a preamble timing offset according to the present embodiment.

In FIG. 4, a primary carrier and a secondary carrier are distinguished using two preamble signatures. More specifically, an example of using a marker 0 for the primary carrier and a marker 1 for the secondary carrier is shown. have.

In the example of FIG. 4, the example which set the timing offset value of one carrier unit to "d" is shown. Here, the d value may be set variously as follows.

First, in one embodiment of the present invention, the d value may be set to be equal to or less than a preamble transmission period or a transmission period of a synchronization channel. Referring to the 3GPP LTE system as an example, P-SCH and S-SCH signals constituting a synchronization channel (hereinafter referred to as P-SCH signal as "PSS (Primary Synchronization Signal)" and S-SCH signal as "SSS (Secondary Synchronization) Signal) "is transmitted every 5ms corresponding to the subframe length, and two PSS / SSS pairs are transmitted in a 10ms frame composed of two subframes.

Two SSSs transmitted within 10 ms have different signatures, for example, short length sequences swapped with each other, so that the receiving end determines whether the corresponding subframe is subframe 1 in subframe 0 within 10 ms frame. I can recognize it. Under this assumption, d may be set to 5 ms.

In another embodiment of the present invention, the d value may be set to be equal to or greater than a preamble transmission period or a synchronization channel transmission period. In the above-described 3GPP LTE system, the same SS is repeatedly transmitted every 10 ms in the 3GPP LTE system. Therefore, it may be difficult to infer the d value set above the synchronization channel transmission period using only the synchronization channel. In this case, the present embodiment proposes to infer the d value through SFN (System Frame Number).

In 3GPP LTE system, SFN is transmitted through P-BCH in subframe 0 (0 to 4095). Assuming that d is set to 10 ms, since SFN is 10 in carrier 0 and SFN is 11 in carrier 1, the value of d can be inferred. The SFN counts up by one every 10 ms.

At this time, the data to be transmitted may be transmitted so that only the preamble has an offset according to the value d. It is also possible to simply increase the SFN transmitted on the P-BCH while leaving the data to be transmitted. This may replace the transmission method by giving an offset to the preamble / synchronization channel according to the d value in the above-described method. Meanwhile, the data to be transmitted is also transmitted by giving an offset according to the d value, and accordingly, a method of setting the SFN to increase is also possible.

For reference, in the 3GPP LTE system, SFN consists of 12 bits. The most significant 10 bits of these 12 bits are explicitly transmitted through the P-BCH corresponding to 40 ms, and may have a value of 0 to 1023 for 40 ms. In addition, the least significant two bits of the above-described 12-bit SFN may be inferred by blind decoding through a unique starting point (RV) of the circular buffer.

In addition, in another embodiment of the present invention, the d value may be variously set so that the receiving side knows the d value through the combination of the preamble / sync channel and the SFN described above.

For example, in the above description, the case where the offset is applied by setting the d value in P-BCH units (10 ms) has been described. However, the d value is set in units of transmitting 4 P-BCHs, that is, 40 ms. It is also possible to apply an offset.

According to the embodiment as shown in FIG. 4, there is an advantage in that the corresponding carrier ID can be efficiently detected with a small amount of calculation. In addition, there is an advantage that no separate control signaling is required to carry the carrier ID. For example, the signal processing of the initial terminal may be performed in the following order.

1. Find the preamble signature 0 for the primary carrier (carrier ID = 0) and be time synchronized.

2. Synchronize time with the preamble of marker 1 for the particular carrier.

3. Use the time offset with the primary carrier to detect the carrier ID of the current state.

FIG. 5 is a diagram for describing another embodiment according to a method of classifying a carrier ID using a preamble timing offset.

FIG. 5 shows an example in which all carriers use the same preamble mark (code), and carrier ID is represented by a timing offset. At this time, it is preferable to transmit an indicator indicating the carrier ID next to the preamble of the primary carrier to provide a reference for comparing the timing offset. In FIG. 5, such an indicator is indicated as a "Primary carrier ID indicator."

According to the present embodiment, the signal processing of the initial terminal may be performed in the following order.

1. Find the primary carrier (carrier ID = 0) through the preamble indicator 0 and the primary carrier indicator and time synchronize.

2. Time synchronization is achieved through the preamble of the marker 0 for a particular carrier.

3. Use the time offset with the primary carrier to detect the carrier ID of the current state.

Similar to the embodiment of FIG. 5, another example of transmitting carrier ID information for each carrier will be described.

FIG. 6 is a diagram for describing another embodiment according to a method of classifying a carrier ID using a preamble timing offset.

In the case of the embodiment shown in FIG. 6, the method of including and transmitting the control signal which shows carrier ID is shown about each carrier. In this case, once the UE detects only one carrier ID, the remaining carrier IDs can be detected in the preamble detection step even without decoding the control signal information.

7 and 8 are diagrams for describing still other embodiments according to a method of classifying a carrier ID using a preamble timing offset.

Specifically, FIG. 7 is similar to the embodiment of FIG. 6, but illustrates a method of separately transmitting a carrier ID indicator into a primary carrier and a secondary carrier. 8 is similar to the embodiment of FIG. 6, but illustrates a method of differently using a preamble code for each carrier ID and defining carrier indication information differently.

The main gist of the embodiments of the present invention as described above is to transmit information on the carrier ID using the timing offset, and the specific carrier information transmission scheme may be various in addition. In addition, in the embodiments described above with reference to FIGS. 4 to 8, applying an offset to a preamble transmission timing is interpreted as applying information about a carrier ID by applying a time offset to the entire frame including the corresponding preamble. You may.

Meanwhile, embodiments in which carrier related information according to the present invention are transmitted through a common control channel (broadcast channel) and the like are also possible. The carrier ID defined according to the present invention may be transmitted through a broadcast channel or a control signal per carrier. For example, in case of IEEE 802.16m in the legacy support mode, the carrier ID may be signaled using a 5-bit reserved bit of DLFP, which is a broadcast channel used in the conventional IEEE 802.16e, and DL-MAP. The carrier ID may be signaled through. Alternatively, a carrier ID may be transmitted by defining a new DLFP / DL-MAP format. In addition, in case of 3GPP LTE, a carrier ID may be transmitted through a broadcast channel of a BCH.

In other words, in case of 3GPP LTE, whether the corresponding carrier is a primary carrier or a secondary carrier may be transmitted as 1-bit signaling through the P-BCH. That is, in the P-BCH (Physical Broadcast Channel), the primary carrier can be signaled to 0 and the secondary carrier can be signaled to 1 (in contrast, the primary carrier can be signaled to 1 and the secondary carrier to 0). In this case, the primary carrier refers to a carrier to which the terminal attempts initial access as described above.

Hereinafter, as another embodiment of the present invention, a method of transmitting a control signal (i.e., a carrier related control signal such as a carrier ID) on a primary carrier will be described.

When the primary carrier is defined according to the above-described embodiment of the present invention, the present embodiment proposes to transmit the entire control signal or carrier ID managed by the MAC using the primary carrier. At this time, when transmitting the entire carrier ID-related information using the primary carrier, to transmit the physical index occupied by the secondary carrier, a logical index for the available frequency band, or a carrier index that can be managed by one MAC using the primary carrier Can be set. In addition, in the description of the present invention, the MAC is exemplary, and as described above, it is possible to manage a plurality of carriers and is just one example of any layer corresponding to a higher layer than the physical layer. In addition, in a specific layer exemplified as "MAC", "MAC" can be seen to include not only the concept defined by the IEEE, but also the concept of MAC existing for each carrier band in the 3GPP system.

The example shown in FIG. 2 is demonstrated. Assume that FA1, FA4, and FA5 are frequency allocation bands available in a multi-carrier support system, and FA1 is the main carrier frequency band. In this case, according to the present embodiment, control information related to multiple carriers can be transmitted through FA1, which is the main carrier frequency band. In the present embodiment, since the system can use FA0 to FA7, 1, 4, and 5, which are carrier indices covered by the MAC, can be transmitted as a control signal of the main carrier. Alternatively, when FA 1, 4, and 5 are replaced with logical indices in the MAC, indexes 0, 1, and 2 become logical indexes 0 on physical channel FA1 on the primary carrier, logical index 1 on FA4, or FA5. It is also possible to signal in the same way as logical index 2. In addition, a method of transmitting all the above-described control signals is also possible.

FIG. 9 is a diagram for describing a concept of transmitting total carrier related control information using a primary carrier according to an embodiment of the present invention.

Here, the control signal transmitted from the primary carrier includes all of the above-described control signals such as a carrier-related control signal, a general control signal, and a carrier ID, and FIG. 9 conceptually illustrates this.

In the above-described embodiments, the preamble in the case of transmitting the control signal using the primary carrier may or may not be the same between carriers. In addition, the method of transmitting the entire carrier related information using the primary carrier according to the present embodiments can be used in combination with the embodiment of transmitting the carrier information using the preamble.

Up to now, the case where the primary carrier is one of the carriers managed by one MAC has been described as an example. However, there may be a plurality of primary carriers according to the present invention. Hereinafter, the case where the primary carriers are two or more among the carriers managed by one MAC will be described.

In describing the present embodiment, a method of separately specifying carrier-related information and transmitting the information using a preamble, a timing offset, and the like and a method of transmitting all the carrier-related information using the primary carrier are applicable. For convenience, a case where all carrier related information is transmitted using a primary carrier will be described.

FIG. 10 is a diagram for explaining a concept in which one primary carrier is defined and the one primary carrier controls the remaining secondary carriers.

FIG. 11 is a diagram for describing a concept in which two primary carriers are defined, and two primary carriers each control a predetermined number of auxiliary carriers.

That is, FIG. 10 illustrates a method in which one primary carrier signals and manages all remaining n-1 carrier related information. In FIG. 11 according to the present embodiment, two primary carriers divide all auxiliary carriers by two. In this case, each transmits the remaining auxiliary carrier related information.

According to the present embodiment as illustrated in FIG. 11, when a plurality of primary carriers are defined, there is an advantage in that a more flexible configuration can be supported in multiplexing between multiple terminals. For example, suppose that one MAC manages six carriers, and the number of terminals bound to the MAC is six, and six terminals form two groups of three. In this case, it is possible to support the terminal corresponding to each group as follows.

FIG. 12 is a diagram for describing a method of supporting each group including a plurality of UEs in which a plurality of primary carriers are grouped according to an embodiment of the present invention.

That is, the RF carrier 0 and the RF carrier 3 corresponding to the primary carrier manage information on the remaining carriers, and provide services by allocating six terminals grouped into two groups to a carrier group managed by each primary carrier. It is possible.

In the example of FIG. 12, six terminals are grouped into two groups to communicate with each other. However, the terminals may be grouped into n groups according to the number of primary carriers.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The foregoing description of the preferred embodiments of the present invention has been presented for those skilled in the art to make and use the invention. Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. I can understand that you can. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

As described above, the signal transmission / reception method according to each embodiment of the present invention can be widely used in a multi-carrier system in which a plurality of carrier frequency bands are managed by one MAC entity. That is, it can be applied to various systems as long as a multi-carrier system as described above is applied regardless of the 3GPP LTE system, IEEE 802.16m, or the like.

1 (a) and 1 (b) are diagrams for conceptually explaining a method of transmitting and receiving a multi-band RF-based signal in terms of a transmitting side and a receiving side.

2 is a diagram illustrating an example of frequency allocation in a multi-band supporting communication method.

3 is a diagram illustrating an example of a scenario in which communication is performed between one base station and a plurality of terminals in a multi-band supporting method.

4 is a diagram for describing a method of classifying a carrier ID using a preamble timing offset according to the present embodiment.

FIG. 5 is a diagram for describing another embodiment according to a method of classifying a carrier ID using a preamble timing offset.

FIG. 6 is a diagram for describing another embodiment according to a method of classifying a carrier ID using a preamble timing offset.

7 and 8 are diagrams for describing still other embodiments according to a method of classifying a carrier ID using a preamble timing offset.

FIG. 9 is a diagram for describing a concept of transmitting total carrier related control information using a primary carrier according to an embodiment of the present invention.

FIG. 10 is a diagram for describing a concept in which one primary carrier is defined and the one primary carrier controls the remaining secondary carriers.

FIG. 11 is a diagram for describing a concept in which two primary carriers are defined, and two primary carriers each control a predetermined number of auxiliary carriers.

12 is a diagram for describing a method of supporting each group of a plurality of terminals grouped with a plurality of primary carriers according to an embodiment of the present invention.

Claims (14)

In the communication system in the base station to transmit a signal to the user equipment using a plurality of carrier frequency bands, Transmitting control information for at least one subsidiary carrier frequency band for the user device to the user device through a primary carrier frequency band of the user device; The control information includes one or more second identifiers respectively assigned to the one or more auxiliary carrier frequency bands and one or more first identifiers respectively corresponding to a carrier frequency band used as the one or more auxiliary carrier frequency bands, The one or more first identifiers respectively identify the secondary carrier frequency bands in a physical layer and the one or more second identifiers each identify the one or more secondary carrier frequency bands in a particular layer that is higher than the physical layer, Each of the one or more second identifiers is one of integers ranging from '0' to 'maximum number of carrier frequency bands managed by the specific layer-1', Signal transmission method. The method of claim 1, Each of the one or more first identifiers corresponds to one of absolute frequency band indices, each assigned to carrier frequency bands defined in the communication system, Signal transmission method. The method of claim 1 The maximum number of carrier frequency bands managed by the specific layer is a preset value, Signal transmission method. 4. The method according to any one of claims 1 to 3, The main carrier frequency band is a carrier frequency band initially connected by the user equipment, Signal transmission method. 4. The method according to any one of claims 1 to 3, Transmitting to the user equipment information indicating which carrier frequency band is the primary carrier frequency band for the user equipment. Signal transmission method. When a user equipment receives a signal from a base station using a plurality of carrier frequency bands in a communication system, Receiving, from the base station, control information for one or more subsidiary carrier frequency bands for the user equipment through a primary carrier frequency band of the user equipment; The control information includes one or more second identifiers respectively assigned to the one or more auxiliary carrier frequency bands, and one or more first identifiers respectively corresponding to a carrier frequency band used as the one or more auxiliary carrier frequency bands, The one or more first identifiers respectively identify the secondary carrier frequency bands in a physical layer and the one or more second identifiers each identify the one or more secondary carrier frequency bands in a particular layer that is higher than the physical layer, Each of the one or more second identifiers is one of integers ranging from '0' to 'maximum number of carrier frequency bands managed by the specific layer-1', How to receive the signal. The method according to claim 6, Each of the one or more first identifiers corresponding to one of absolute frequency band indices assigned to carrier frequency bands defined in the communication system, How to receive the signal. The method of claim 6, wherein The maximum number of carrier frequency bands managed by the specific layer is a preset value, How to receive the signal. 9. The method according to any one of claims 6 to 8, The main carrier frequency band is a carrier frequency band initially connected by the user equipment, How to receive the signal. 9. The method according to any one of claims 6 to 8, Receiving from the base station information indicating which carrier frequency band is the primary carrier frequency band for the user equipment; How to receive the signal. delete delete delete delete

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