WO2010121470A1 - Resource mapping method - Google Patents

Abstract

A resource mapping method includes: making the protection sub-carriers between the continuous carrier frequencies as a physical resource unit, making the protection sub-carriers between the un-continuous carrier frequencies as the protection between the carrier frequencies, and not mapping the protection sub-carrier as a physical resource unit. Using the technical solutions of the present invention, when the resource mapping is performed to the multi-carrier system, mapping the protection sub-carriers between the continuous carrier frequencies as a physical resource unit, and keeping the original function of the protection sub-carriers between the un-continuous carrier frequencies, solve the problem which the resource mapping can't be processed in a multi-carrier system, and make the resource mapping progress of the wireless resource unit in the multi-carrier system canonical, make the use of the whole frequency spectrum resource more flexibly and fully, and improve the utilization ratio of the system frequency spectrum.

Description

 Resource mapping method

 The present invention relates to the field of communications, and in particular, to a resource mapping method. Background technique

 In a wireless communication system, a base station refers to a device that provides services to a terminal. Generally, the base station can communicate with the terminal through the uplink and the downlink, where the downlink refers to the direction of the base station to the terminal, and the uplink refers to the direction of the terminal to the base station. Also, a plurality of terminals can simultaneously transmit data to the base station through the uplink, or can simultaneously receive data from the base station through the downlink. The base station provides resource allocation information for downlink transmission from the base station to the terminal, and resource allocation information that can be used when the terminal transmits uplink to the base station, in order to implement uplink/line communication with the terminal. Generally, the resource allocation information may include parameter information such as an actual physical resource location and a transmission method that the terminal needs to know. Different communication systems have different requirements for resource allocation and mapping. Communication systems based on specific technologies also have specific requirements for specific resource allocation and resource mapping.

 With the continuous development of wireless communication technology, users have higher requirements for transmission rate. In the framework and overall objectives of the International Mobile Telecommunications-2000 (IMT-2000) system and the Super IMT-2000 system, the requirements of the IMT-2000 system can be achieved at high speeds in the terminal. The rate of 100 Mbits/s reaches the rate of 1 Gbits/s when the terminal moves at a low speed. In order to meet such rate requirements, the system needs to be able to provide more bandwidth. However, due to the increasing tension of wireless spectrum resources caused by the coexistence of multiple communication systems, the relatively large bandwidth used by IMT-2000 systems is usually the following two situations: one is continuous large bandwidth, and the other is discontinuous. Large bandwidth.

On the terminal side, the processing capabilities of different terminals are different. Some terminals can handle continuous large bandwidth, while some terminals can only handle relatively small bandwidth. Send and receive data on different carrier frequencies. Therefore, in order to provide higher transmission rates and support for different types of terminals, the base station needs to support multi-carrier operation, for example, multi-carrier frequency control and handover management.

 At present, multi-carrier operation is the key research object in current wireless communication. At present, the main carrier mapping technology is mainly for single carrier. However, the resource mapping process of multiple carrier frequencies (especially the resource mapping process in Orthogonal Frequency Division Multiple Address (OFDMA) based wireless communication systems) is much more complicated than the resource mapping of single carriers.

 Specifically, the OFDMA system belongs to a multi-carrier system, and each symbol in the OFDMA system may include multiple sub-carriers, and the interference control technology is flexible and complex, and a partial frequency reuse (FFR) technology can be used to achieve good coverage. And relatively high spectrum utilization efficiency.

 Although a multi-carrier system such as an OFDMA system has various advantages, a solution for resource mapping based on a multi-carrier system has not been proposed in the related art. Summary of the invention

 For the problem that the resource mapping cannot be implemented in the multi-carrier system in the related art, the main object of the present invention is to provide a resource mapping method to solve at least one of the above problems according to an aspect of the present invention, and to provide a Resource mapping method.

 The resource mapping method according to the present invention includes: using a guard subcarrier between consecutive carrier frequencies as a physical resource unit, and using a guard subcarrier between non-contiguous carrier frequencies for protection between carrier frequencies, and not protecting the protector The carrier map is a physical resource unit.

 The protection subcarrier refers to: all or part of the protection subcarriers between consecutive carrier frequencies. Moreover, the frequency interval between consecutive carrier frequencies is an integer multiple of the subcarrier spacing.

The physical resource unit may belong to the 0th frequency partition of the carrier frequency in which it is located; in addition, the physical resource unit may also belong to the carrier frequency of the carrier frequency other than the 0th frequency partition. Some or all of the frequency partitions.

 Preferably, when the physical resource unit is mapped to a logical resource unit, the physical resource unit is not subjected to subband division and/or microstrip replacement.

 Preferably, when performing logical resource unit mapping, the physical resource unit independently performs at least one of the following operations: DRU allocation and subcarrier replacement, CRU allocation.

 The type of the logical resource unit includes at least one of the following: a continuous resource unit and a distributed resource unit.

 Further, before performing logical unit mapping, the foregoing method further includes: determining a type of the logical unit according to pre-configuration of the system or control information of the control channel.

 Wherein, if the determined logical unit type is a distributed resource unit, the physical resource unit of the protected subcarrier mapping is mapped to the distributed resource unit according to a predetermined subcarrier mapping rule when the logical unit mapping is performed.

 Preferably, the control information includes an indication bit for indicating a logical resource unit type, and the indication bit is used to indicate a logical resource unit type to which the physical resource unit of the protection subcarrier mapping of the one or more carrier frequencies is required to be mapped.

 Further, the above method further comprises: sorting and numbering the consecutive resource units, and/or sorting and numbering the distributed resource units.

 The continuous carrier frequency refers to: two adjacent carrier frequencies, and the frequency domain interval of the protection subcarriers between the two carrier frequencies is less than or equal to a predetermined value.

 Preferably, the number and/or identification of guard subcarriers as physical resource units may be indicated according to one of the following ways: pre-configuration of the system, control information of the control channel, management messages.

 Preferably, whether the guard subcarrier between consecutive carrier frequencies is used as a physical resource unit according to one of the following ways: pre-configuration of the system, control information of the control channel, management message.

Preferably, the frequency partition to which the physical resource unit belongs may be indicated according to one of the following ways: pre-configuration of the system, control information of the control channel, and management message. By means of the above technical solution of the present invention, by performing resource mapping on a multi-carrier system, the protected sub-carriers between consecutive carrier frequencies are mapped into physical resource units, and the original of the protected sub-carriers between the discontinuous carrier frequencies is maintained. It has the function of solving the problem of resource mapping in the multi-carrier system, standardizing the resource mapping process of the radio resource unit in the multi-carrier system, making the use of the entire spectrum resource more flexible and sufficient, and improving the spectrum utilization efficiency of the system. DRAWINGS

 1A is a schematic diagram of a multi-carrier system;

 1B is a schematic diagram of adjacent carriers of adjacent carrier bandwidths;

 2A is a schematic diagram of a specific example of a frame structure of an OFDMA wireless communication system; FIG. 2B is a schematic diagram showing a configuration of a first physical resource unit in one subframe of a 5 MHz OFDMA system;

 2C is a schematic diagram of mapping a physical resource unit to a logical resource unit in a 5 MHz OFDMA system;

 Figure 3 is a schematic diagram of resource mapping in a single carrier 5MHz bandwidth (the number of frequency partitions is 1, that is, only FP0);

 4 is a schematic diagram of mapping of protected subcarrier resource blocks of two adjacent 5 MHz bandwidths (the number of frequency partitions is all 1, that is, only FP0) in the embodiment of the present invention;

 5 is a schematic diagram of a resource mapping process of two adjacent 10 MHz bandwidth guard subcarrier resource blocks in an embodiment of the present invention;

 6 is a schematic diagram of a resource mapping process of a multi-carrier system with a 5 MHz bandwidth and a 10 MHz bandwidth adjacent thereto in the embodiment of the present invention;

 7 is a schematic diagram of another resource mapping process of two adjacent 5 MHz bandwidths in an embodiment of the present invention;

FIG. 8 is a schematic diagram of another resource mapping process of two adjacent 10 MHz bandwidth multi-carrier systems according to an embodiment of the present invention; FIG. 9 is another schematic diagram of a resource mapping process of two adjacent 10 MHz bandwidth guard subcarrier resource blocks in an embodiment of the present invention;

 10 is a schematic diagram of a resource mapping process of two adjacent 10 MHz bandwidth guard subcarriers in a large bandwidth mode according to an embodiment of the present invention;

 11 is a schematic diagram of a mapping process of two adjacent 20 MHz bandwidth guard subcarrier resources in an embodiment of the present invention;

 12 is a schematic diagram of a mapping process of two adjacent 20 MHz bandwidth guard subcarrier resources in an embodiment of the present invention;

 13 is a schematic diagram of a resource mapping process of two adjacent 20 MHz bandwidth guard subcarriers in a large bandwidth mode according to an embodiment of the present invention;

 14 is a schematic diagram of resource mapping of two adjacent 5 MHz forming an irregular PRU in a large bandwidth according to an embodiment of the present invention;

 15 is a schematic diagram of a resource mapping process using an irregular PRU in two adjacent 5 MHz bandwidth multi-carrier wireless communication systems according to an embodiment of the present invention;

 16 is a schematic diagram of a resource mapping process using an irregular PRU in two adjacent 5 MHz bandwidth multi-carrier wireless communication systems according to an embodiment of the present invention;

 17 is a schematic diagram of a resource mapping process for forming an irregular PRU in a large bandwidth mode by using two adjacent 5 MHz bandwidths in an embodiment of the present invention;

 FIG. 18 is a schematic diagram showing a specific example of a resource mapping process of two adjacent 5 MHz multi-carrier frequency wireless communication systems in a special case according to an embodiment of the present invention. detailed description

For the problem that the resource mapping cannot be implemented in the multi-carrier system in the related art, the present invention proposes to map the Guard Subcarriers between the continuous carrier frequencies into physical resource units when performing resource mapping on the multi-carrier system. The protection subcarriers between the discontinuous carrier frequencies are not mapped, the original functions are maintained, and the resource mapping of the radio resource units in the multi-carrier system is standardized. The shooting process solves the problem that resource mapping cannot be performed in a multi-carrier system, and the mapping of resources can adapt to the characteristics of a multi-carrier OFDMA system, so that a base station using multiple carrier frequencies can select an appropriate protection band resource mapping method according to scheduling requirements. Therefore, the use of the entire frequency transmission resource more flexibly and fully ensures the spectrum utilization efficiency of the wireless communication system based on OFDMA technology.

 According to an embodiment of the present invention, a resource mapping method is provided.

 The resource mapping method according to an embodiment of the present invention includes: using a guard subcarrier between consecutive carrier frequencies (two or more consecutive carrier frequencies) as a physical resource unit (PRU); where, the continuous carrier frequency is Refers to: two adjacent carrier frequencies, and the frequency domain spacing of the guard subcarriers between the two carrier frequencies is less than or equal to a predetermined value, that is, one of the two adjacent carrier frequencies, one carrier frequency (carrier frequency) The frequency domain interval between the last protected subcarrier of the smaller one and the first guard subcarrier of the other carrier frequency (larger carrier frequency) is less than or equal to a predetermined value (the predetermined value can be flexibly set as needed, There is no limitation here; the protection subcarrier between consecutive carrier frequencies means: all or part of the protection subcarriers between consecutive carrier frequencies; and, the frequency spacing between consecutive carrier frequencies is an integer multiple of the subcarrier spacing, ie The frequency spacing between the center frequency points of the two consecutive carrier frequencies is an integer multiple of the subcarrier spacing.

 For the protection subcarriers between the discontinuous multi-carrier frequencies, it is still used as protection between the carrier frequencies, that is, still as a protection subcarrier, and is not used to form a PRU.

For a certain PRU formed by the protection subcarrier of the multi-carrier system, the PRU belongs to the 0th frequency partition (Frequency Partition 0, or simply FP0) of the carrier frequency in which it is located, that is, the PRU The PRU is scheduled to be allocated to the 0th frequency partition of the carrier system; or, the PRU may be attributed to other part or all frequency partitions of the carrier frequency in which it is located, that is, the PRU belongs to other part or all frequency partitions of the carrier system. Optionally, the PRU may also belong to other part or all frequency partitions of the carrier frequency, for example, the PRU may also belong to the first part of the carrier system, based on the 0th frequency partition. 2, 3 frequency partitions (Frequency Partition 1, 2, 3, which can be simply referred to as FP1, FP2, FP3), that is, the PRU It can also be scheduled for the first, second, and third frequency partitions of the carrier system. Preferably, the frequency partition to which the physical resource unit belongs may also be indicated according to one of the following ways: pre-configuration of the system, control information of the control channel, and management message (the management message is a MAC layer data packet for transmitting management information) The difference from a normal data packet is that its payload is a field that carries management information, for example, a capability negotiation message in network initialization. For example, the 1-bit indication information may be set in a control channel of the multi-carrier system, where the bit indication information is used to indicate whether the protection sub-carrier of the multi-carrier system belongs to the 0th frequency partition (FP0), and the indication is When the bit is 1, it indicates that the physical resource unit belongs to the FP0 of the carrier frequency where it is located; when the indication bit is 0, it may indicate that the physical resource unit belongs to one or more of the following frequency partitions of the carrier frequency where it is located: FP1, FP2, FP3.

 After the mapping of physical resource units is performed, mapping of logical resource units is also required. In this case, the PRU mapped by the guard subcarrier on the carrier frequency and other PRUs on the carrier frequency can be mapped into logical resource units.

 When performing logical resource unit mapping, the multi-cell related resource mapping process operates only on PRUs formed by non-protected subcarriers, and one or more PRUs formed by protected subcarriers of the multi-carrier system do not participate in multi-cell resources. The mapping process. This is because the protection subcarriers in the normal system do not form a PRU. All normal data PRUs will independently perform multi-cell resource mapping procedures. Terminals that do not support multi-carrier systems will only map according to the multi-cell resource mapping process of common data. The PRU formed by the protection sub-carriers also joins the multi-cell resource mapping process, which will disrupt the normal mapping of the normal data PRUs, and the normal data PU mapping relationship may not be correctly obtained when the ordinary terminals that do not support the multi-carrier system are accessed. Therefore, one or more PRUs formed by the protected subcarriers of the multi-carrier system do not participate in the resource mapping process of the multi-cell.

In order to avoid the problem that the PRU cannot be mapped normally, it is necessary to perform subband division and/or microstrip replacement only on PRUs other than the protection subcarrier mapping PRU on the carrier frequency, that is, Sub- and/or microstrip replacement processing.

 Preferably, one or more PRUs mapped by the protection subcarriers of the multi-carrier system can independently participate in the cell-specified resource mapping process, and the cell-specific mapping process of these PRUs is independent of the cell-specific mapping process of the common data PRU. Specifically, at least one of the following operations may be independently performed on one or more PRUs mapped by the protection subcarriers: a distributed resource unit

(Distributed Resource Unit, DRU) allocation and subcarrier permutation, centralized resource unit

(Contiguous Resource Unit, CRU).

 The type of logical unit mapped by the PRU may include: a contiguous resource unit and/or a distributed resource unit. The specific logical resource unit that needs to be mapped to can be determined according to the pre-configuration of the system or the control information of the dedicated control channel. The control information may include an indication bit for indicating a logical resource unit type, and the indication bit is used to indicate a logical resource unit type of the PRU required to be mapped by the protection subcarrier mapping of one or more carrier frequencies, for example, an indication bit. It can be used to indicate the type of logical resource unit to be mapped by the PRU mapped by the protection subcarrier on all carrier frequencies of the multi-carrier system, and also to the logical resource unit to which the PRU mapped by the protection subcarrier of each carrier frequency needs to be mapped. Types are indicated separately.

 On the one hand, if it is determined that the logical unit type mapped by the PRU mapped by the protection subcarrier of the multi-carrier system is a distributed resource unit, the predetermined subcarrier mapping rule according to the distributed resource unit may be used when performing logical unit mapping. The PRUs that protect the subcarrier mapping are mapped to distributed resource units. Also, these distributed resource units can be numbered by default or in a specified order.

On the other hand, if it is determined that the logical unit type to be mapped by the PRU mapped by the protection subcarrier of the multi-carrier system is a continuous resource unit, the consecutive or subsequent consecutive resource units may be numbered for these consecutive resource units. In addition, how many quantities are used for the multi-carrier system and which protection sub-carriers are used for mapping to PRUs, control signaling can be performed by the multi-carrier system, or management messages (management messages are MAC layer packets for transmitting management information) The difference from a normal data packet is that its payload is a field that carries management information, for example, a capability negotiation message in network initialization. It can also be configured by default. And, whether the protection subcarrier of the multi-carrier system is available for mapping to a PRU may be indicated by the multi-carrier system in control signaling, or a management message (for example, a capability negotiation message in network initialization), or may be configured by default .

 The resource mapping process according to an embodiment of the present invention will be described in detail below in conjunction with the resource mapping and scheduling modes of the current multi-carrier communication system.

Generally, in the multi-carrier communication system currently used, the bandwidth may be composed of bandwidths on multiple carrier frequencies, and the bandwidth of multiple carrier frequencies may be continuous or discontinuous, and different types of terminals may support different types. bandwidth. For example, as shown in FIG. 1A, the frequency of carrier 1 and carrier 2 is continuous. As shown in FIG. 1B, the 511th subcarrier of carrier frequency 1 (a total of 512 subcarriers, numbered 0 to 511) is adjacent to the 0th subcarrier of carrier frequency 2 (a total of 512 subcarriers, numbers 0 to 511) For example, in a certain type of OFDMA system, the frequency interval between two consecutive subcarriers is 10.94 KHz, and the carrier frequency 1 (a total of 512 subcarriers, numbered 0 ~ 511) of subcarrier No. 511 and carrier frequency 2 The frequency interval between subcarriers 0 of 512 subcarriers (numbered from 0 to 511) is also 10.94 KHz. In this case, the bandwidth of the two carriers can be considered to be adjacent, and the frequency and carrier of carrier frequency 3 are considered to be adjacent. The frequency sums of frequencies 1 and 2 are discontinuous, and the last subcarrier of carrier frequency 2 and the first carrier of carrier frequency 3 are separated by a relatively large frequency segment, for example, in the above OFDMA system, two consecutive subcarriers The frequency interval between them is 10.94 KHz. However, the frequency difference between the last subcarrier of carrier 2 and the first carrier of carrier 3 is 5 MHz. At this time, it is considered that the frequency of carrier 3 and the frequency of carrier 2 are discontinuous. Terminal 1 can receive data on three carrier frequencies at the same time, and terminal 2 can simultaneously 1 and frequency 2 receives the data, the first terminal 3 only at different times The data is then received on carrier frequencies 2 and 3, while terminals 4, 5 and 6 can only receive data on one carrier frequency. In a wireless communication system based on OFDMA technology, a resource mapping process can map physical resources (eg, including physical subcarriers) into logical resources, for example, map physical subcarriers into logical resource units (LRUs), base stations. The scheduling of radio resources is implemented by scheduling logical resource blocks. The main basis of resource mapping is the frame structure and resource structure of the OFDMA system. The frame structure divides the radio resources into different levels of units in the time domain for scheduling, for example, it can be classified into a super-frame, a frame, a sub-frame, and a symbol.

 As shown in FIG. 2A, the radio resource is divided into super frames in the time domain, each super frame includes 4 frames, each frame includes 8 sub-frames, and the sub-frame is composed of 6 basic OFDM symbols (may also be other numbers The OFDM symbol is composed of, and the actual system determines how many OFDM symbols are included in each level unit in the frame structure according to factors such as the moving speed, service rate, and service type of the terminal to be supported.

 For the resource structure, the available frequency bands can be divided into frequency sub-bands (FPs) in the frequency domain according to factors such as the coverage supported by the terminal, the moving speed of the terminal, the service rate, and the service type, and then the frequency subbands are The internal frequency resource is divided into several physical ones, wherein the logical resource unit can be further divided into: a centralized resource unit and/or a distributed resource unit.

 As shown in Fig. 2B, the 5 MHz OFDMA system, each physical resource unit, consists of 18 consecutive carriers and 6 time domain symbols.

As shown in FIG. 2C, for 24 PRUs in the above 5 MHz bandwidth, all sub-PRUs can be divided into two parts by sub-band division (subband Partition), and one part is a sub-band part (as shown in the white PRU part). The other is the microstrip part (shown in the dark part of the figure). The PRU of all microstrip parts will be reordered after a microband permutation (Miniband Permutation). For PPRUMB; then, all PRUs Then, the frequency partition is allocated to one or more frequency partitions. As shown in FIG. 3, 24 PRUs are all divided into frequency partition 0, that is, divided into FP0, and the above-mentioned sub-band division , microstrip replacement and frequency partitioning processes all belong to multi-cell resource mapping

(Multi-Cell Resource Mapping) process, in each frequency partition, all PRUs of the frequency partition will be replaced by CRU/DRU Allocation and subcarrier replacement

(Subcarrier Permutation) process, which is mapped to logical resource unit (LRU). ₀ These logical resource units can be divided into CRU and DRU, as shown in Figure 2C, where there are 12 CRUs, and the CRU numbers are 0, 1, 2, respectively. ..., 11, there are 12 DRUs, the DRU numbers are 0, 1, 2, 11. The CRUDRU allocation process will determine how many and which PRUs are mapped to CRUs. The process of mapping PRUs to CRUs is to directly map all carriers to the CRU without any order change. For all DRUs that are not CRUs, the sub-carrier replacement process will be adopted. Mapped to DRU, where the mapping process of subcarrier permutation will scramble and reorder the positions of all carriers in the PRU divided into DRUs, for example, for the sth on the first time domain symbol in the tth subframe The mth carrier pair above the LRU, the index k of the actual physical carrier pair of the carrier pair can be obtained by:

K― L _{DRU FPi} ■ f (^m,s) + g^PermSeq^ ),^, m ,t^

 among them,

 G^PermSeq ),s,m,l,t^

= ( PermSeq {^f [m,s) + s + l^ mod L _{DRU FPi} + DL _ PermBase ) mod L _{DRU PPi} where PermSeqQ is a permutation sequence of length L brain! The above CRU/DRU allocation and subcarrier replacement procedures belong to Cell-Specific Resource Mapping.

After the base station side maps all PRUs to LRUs by using the resource mapping process described above, all the schedulings are performed on the LRUs, and a specific terminal is notified to inform the terminal which LRUs the data resources are allocated to, and the connected terminals. After knowing the index of these LRUs, they will use The same mapping rule and mapping parameters as above are actually mapped to the actual LRU of the LRU allocated to the terminal, so as to know which real physical subcarriers the data is located on, and then receive the data at the correct time-frequency position. .

 The necessary parameters required for the above mapping process can be transmitted to the terminal through the control channel or control signaling. For example, how many PRUs are allocated to the Subband part, how many are allocated to the Miniband part, how many frequency partitions are divided, and how many CRUs are allocated in each frequency partition. DRU and so on.

 Based on the above multi-carrier frequency communication system, a plurality of examples of the resource mapping process according to an embodiment of the present invention will be described in detail below.

 Example 1 :

 In this example, referring to Figure 4, a resource mapping process for two adjacent 5 MHz bandwidth multi-carrier wireless communication systems is shown.

 Among them, the 5MHz bandwidth FFT (Fast Fourier Transform) points are 512, and the available subcarriers in the sub-frame are 432, which are divided into 24 physical resource units, each of which is 18 x 6, each 5MHz. The left (low frequency) protection of the bandwidth has 40 guard subcarriers and the right (high frequency) has 39 guard subcarriers.

 The resource configuration information of each 5 MHz bandwidth is divided into one frequency sub-band FP0, and the frequency sub-band 0 includes three resource sub-bands (Subband), which includes 12 physical resource units.

 On the left (low frequency) left side of the 5MHz bandwidth (low frequency), there are 40 guard subcarriers, and on the right (high frequency) there are 39 guard subcarriers. Between two adjacent bandwidths, there are 39+40=79 guards. Carrier.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

As shown in FIG. 4, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 to 472. The subcarrier is used as a normal data carrier (which includes a zero frequency carrier that does not modulate baseband data), and subcarrier 473 490 is used to participate in forming a physical resource unit. The remaining 21 subcarriers, i.e., the 491 511 carrier, still serve as guard subcarriers.

 As shown in FIG. 4, the leftmost 22 guard subcarriers of the second 5 MHz bandwidth on the right side, that is, the second 5 MHz bandwidth subcarriers 0 to 21, still serve as guard subcarriers, and the subsequent 18 guard subcarriers, that is, The subcarrier 22 39 is configured to form one physical resource unit, and the middle 433 subcarriers, that is, 40 to 472 subcarriers are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 39 subcarriers That is, the carrier number 473 511 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 4, for the 5 MHz bandwidth of the first carrier, the sub-band division (Subband Partition) is performed on the 24 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partitioning of the first carrier, and the frequency partition is zero FP0 scheduling, and is renumbered in the FP0. CRU12.

 As shown in FIG. 4, for the 5 MHz bandwidth of the second carrier, the sub-band division (Subband Partition) is performed on the 24 physical resource units formed by the normal data sub-carriers, and then the micro-band permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partition zero FP0 scheduling of the second carrier bandwidth, and is renumbered as CRU12 in FP0.

 Example 2:

Figure 5 illustrates the resource mapping process for two adjacent 10 MHz bandwidth multi-carrier wireless communication systems in this example. Among them, the FFT point of the 10MHz bandwidth is 1024, the available subcarriers in the sub-frame are 864, and are divided into 48 physical resource units, each of which is 18, and the left (low frequency) protection of each 10MHz bandwidth has 80 protections. Subcarriers, right (high frequency) have 79 guard subcarriers.

 The carrier resource configuration information of each 10 MHz bandwidth is divided into four frequency sub-bands, which are FP0, FP1, FP2, and FP3, respectively, and each frequency sub-band includes 12 resource units.

 On the left (low frequency) left side of the 10MHz bandwidth multicarrier system (low frequency;), there are 80 guard subcarriers, and on the right (high frequency) there are 79 guard subcarriers, between two adjacent systems, there are 79+80 = 159 protected subcarriers.

 The process of forming resources in the bandwidth protection according to the resource configuration information is:

 As shown in FIG. 5, the leftmost 80 subcarriers of the first 10 MHz bandwidth on the left side, that is, the first 10 MHz bandwidth subcarriers 0 to 79, still serve as guard subcarriers, and the middle 865 subcarriers, that is, 80 to 944. The subcarrier is used as a normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), and the next 36 subcarriers, ie, subcarriers 945-980, are used to form two physical resource units, and the remaining 43 sub-carriers The carrier, ie, the 981 1023 carrier still acts as a guard subcarrier.

 As shown in FIG. 5, the leftmost 44 guard subcarriers of the second 10 MHz bandwidth on the right side, that is, the second 10 MHz bandwidth subcarriers 0 to 43, still serve as guard subcarriers, and the subsequent 36 guard subcarriers, that is, The subcarrier 44 79 is used to form two physical resource units, and the middle 865 subcarriers, that is, the subcarriers 80 to 944 are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 79 sub-carriers The carrier, that is, the carrier number 945~1023 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

As shown in FIG. 5, for the 10 MHz bandwidth of the first carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then performed. Microband permutation, then CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements formed by guarding subcarriers within the band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency division of the first carrier of the 10 MHz bandwidth, zero FP0 scheduling, and is from left to right ( The order from low frequency to high frequency is renumbered as CRU8, CRU9 in FP0.

 As shown in FIG. 5, for the 10 MHz bandwidth of the second carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then the Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partition of the second carrier bandwidth, zero FP0 scheduling, and is from left to right (from low frequency to The order of the high frequency) is renumbered as CRU8 and CRU9 in FP0. Example 3:

 Figure 6 shows a multi-carrier wireless communication system with two adjacent bandwidths in this example, where the left (low frequency) is a 5 MHz bandwidth and the right (high frequency) is a 10 MHz bandwidth guard band resource mapping process.

 The FFT point of the 5MHz bandwidth is 512, the number of available subcarriers in the sub-frame is 432, and is divided into 24 physical resource units, each of which is 18 6 , and the left side (low frequency) of the 5 MHz bandwidth is protected with 40 guard subcarriers. There are 39 guard subcarriers on the right.

 Among them, the FFT point of the 10MHz bandwidth is 1024, the available subcarriers in the sub-frame are 864, which are divided into 48 physical resource units, each of which is 18 6 , and the left (low frequency) protection of each 10MHz bandwidth has 80 protections. Subcarriers, there are 79 guard subcarriers on the right.

The resource configuration information of the 5 MHz bandwidth is divided into one frequency sub-band FP0, and the 10 MHz carrier system resource configuration information is divided into four frequency sub-bands, which are respectively FP0 and FPU. FP2, FP3, where each frequency subband contains 12 resource elements.

 On the left (low frequency) left side of the 5MHz bandwidth (low frequency), there are 40 guard subcarriers, there are 79 guard subcarriers on the right side (high frequency) of the 10MHz bandwidth, between two adjacent systems, there are 39+80= 119 guard subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 6, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 to 472. The subcarrier is used as a normal data carrier (which includes a zero frequency carrier that does not modulate baseband data), and subcarriers No. 473-490 are used to participate in forming one physical resource unit, and the remaining 21 subcarriers, ie, 491 to 511 The number carrier still acts as a protection subcarrier.

 As shown in FIG. 6, the leftmost 62 guard subcarriers of the second 10 MHz bandwidth on the right side, that is, the second 10 MHz bandwidth subcarriers 0 to 61, still serve as guard subcarriers, and the subsequent 18 guard subcarriers, that is, Subcarriers 62 to 79 are used to form one physical resource unit, and 865 subcarriers in the middle, that is, subcarriers 80 to 944 are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 79 sub-carriers The carrier, that is, the carrier number 945~1023 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 6, for the 5 MHz bandwidth of the first carrier, the sub-band division (Subband Partition) is performed on the 24 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency division of the first carrier with a frequency partition of zero FP0 scheduling, and is from left to right ( The order from low frequency to high frequency is renumbered as CRU12 in FP0.

As shown in Figure 6, for the 10MHz bandwidth of the second carrier, it is first for the normal data subcarrier. The 48 physical resource units formed by the wave perform Subband Partition, then perform Mmiband Permutation, then perform CRU/DRU allocation, and subcarrier replacement in the DRU. None of these processes involve physical resource elements formed by guarding subcarriers within the band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency division of the second carrier 10 MHz bandwidth, zero FP0 scheduling, and follows from left to right (from low frequency The order to the high frequency) is renumbered as CRU8 in FP0. Example 4:

 Figure Ί shows the resource mapping process for two adjacent 5 MHz bandwidth multi-carrier wireless communication systems in this example.

 The FFT points of the 5MHz bandwidth are 512, and the number of available subcarriers in the sub-frame is 432, which are divided into 24 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 5MHz bandwidth has 40 The subcarrier is protected, and there are 39 guard subcarriers on the right (high frequency).

 Each 5MHz carrier bandwidth resource configuration information is divided into one frequency subband FP0, and the frequency subband 0 includes a centralized resource group, which includes six physical resource units.

 On the left (low frequency) 5MHz bandwidth multicarrier system (low frequency), there are 40 guard subcarriers, and the right (high frequency) has 39 guard subcarriers. Between two adjacent systems, there are 39+40= 79 protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 7, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 to 472. The subcarrier is used as a normal data carrier (which includes a zero frequency carrier that does not modulate baseband data), and subcarriers No. 473-508 are used to participate in forming two physical resource units, and the remaining three subcarriers, ie, 509~ Carrier 511 still acts as a protection subcarrier.

As shown in FIG. 7, the leftmost 40 guard subcarriers of the second 5 MHz bandwidth on the right side, that is, the second 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, with 433 subcarriers in the middle. The wave, that is, the subcarriers 41 to 473 is used as the normal data carrier (which includes a zero frequency carrier that does not modulate the baseband data), and the remaining 39 subcarriers, that is, the 474 511th carrier still serve as the guard subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 7, for the 5 MHz bandwidth of the first carrier, the sub-band division (Subband Partition) is performed on the 24 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (based on the indication information of the foregoing control channel), two physical resource units in the guard band are mapped into DRUs, and subcarrier replacement is performed according to the subcarrier replacement rule in the two physical resource units, belonging to the first one. The frequency division of the 5 MHz bandwidth of the carrier is zero FP0 scheduling, and is renumbered as DRU 12, DRU 13 in FP0 in order from left to right (from low frequency to high frequency).

 As shown in FIG. 7, for the 5 MHz bandwidth of the second carrier, the subband Partition is performed on the 24 physical resource units formed by the normal data subcarriers, and then the Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU.

 Example 5:

 Figure 8 shows the resource mapping process for two adjacent 10 MHz multi-carrier wireless communication systems in this example.

 Among them, the FFT point of the 10MHz bandwidth is 1024, the available subcarriers in the sub-frame are 864, and are divided into 48 physical resource units, each of which is 18, and the left (low frequency) protection of each 10MHz bandwidth has 80 protections. Subcarriers, right (high frequency) have 79 guard subcarriers.

Each 10 MHz carrier system resource configuration information is divided into four frequency sub-bands, which are FP0, FP1, FP2, and FP3, wherein each frequency sub-band includes 12 resource elements. On the left (low frequency) 10MHz multi-carrier system on the left (low frequency), there are 80 guard subcarriers, and on the right (high frequency) there are 79 guard subcarriers, between two adjacent systems, there are 79+80=159 Protection subcarriers.

 The process of forming resources in the bandwidth protection according to the resource configuration information is:

 As shown in FIG. 8, the leftmost 80 subcarriers of the first 10 MHz bandwidth on the left side, that is, the first 10 MHz bandwidth subcarriers 0 to 79, still serve as guard subcarriers, and the middle 865 subcarriers, that is, 80 to 944. The subcarrier is used as a normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), and the next 36 subcarriers, ie, subcarriers 945-980, are used to form two physical resource units, and the remaining 43 sub-carriers The carrier, ie, the 981 1023 carrier still acts as a guard subcarrier.

 As shown in FIG. 8, the leftmost 44 guard subcarriers of the second 10 MHz bandwidth on the right side, that is, the second 10 MHz bandwidth subcarriers 0 to 43 are still used as guard subcarriers, and the subsequent 36 guard subcarriers, that is, Subcarriers 44 to 79 are used to form two physical resource units, and 865 subcarriers in the middle, that is, subcarriers 80 to 944 are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 79 The subcarriers, that is, the carrier number 945~1023 are still used as protection subcarriers.

 According to the resource configuration information, the resource mapping process is:

As shown in FIG. 8, for the 10 MHz bandwidth of the first carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements formed by guarding subcarriers within the band. Finally, (in accordance with the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped into a DRU, and in the two physical resource units, the subcarrier replacement is performed according to the subcarrier replacement rule, which belongs to the first carrier. The frequency partition of the 10 MHz bandwidth is zero FP0 scheduled, and is renumbered as DRU4, DRU5 in FP0 in order from left to right (from low frequency to high frequency). As shown in FIG. 8, for the 10 MHz bandwidth of the second carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then the Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements formed by guarding subcarriers within the band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped into a DRU, and in the two physical resource units, the subcarrier replacement is performed according to the subcarrier replacement rule, and the The frequency division of the two-carrier system is zero FP0 scheduling, and is renumbered as DRU4, DRU5 in FP0 in order from left to right (from low frequency to high frequency).

 Example 6:

 Figure 9 shows the resource mapping process for two adjacent 10 MHz multi-carrier wireless communication systems in this example.

 The FFT point of the 10MHz bandwidth is 1024, and the available subcarriers in the subframe are 864, which are divided into 48 physical resource units, each of which is 18 X 6. The left (low frequency) protection of each 10 MHz bandwidth is 80 The subcarrier is protected, and the right (high frequency) has 79 guard subcarriers.

 Each 10 MHz carrier system resource configuration information is divided into four frequency sub-bands, which are FP0, FP1, FP2, and FP3, and each frequency sub-band includes 12 resource units.

 On the left (low frequency) 10MHz multi-carrier system on the left (low frequency), there are 80 guard subcarriers, and on the right (high frequency) there are 79 guard subcarriers, between two adjacent systems, there are 79+80=159 Protection subcarriers.

 The process of forming resources in the bandwidth protection according to the resource configuration information is:

As shown in FIG. 9, the leftmost 80 subcarriers of the first 10 MHz bandwidth on the left side, that is, the first 10 MHz bandwidth subcarriers 0 to 79, still serve as guard subcarriers, and the middle 865 subcarriers, that is, 80 to 944. The subcarrier is used as a normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), and the next 36 subcarriers, that is, subcarriers No. 945 ~ 980 are used for the reference. And forming two physical resource units, the remaining 43 subcarriers, that is, the 981 1023 carrier still acts as a protection subcarrier.

 As shown in FIG. 9, the leftmost 44 guard subcarriers of the second 10 MHz bandwidth on the right side, that is, the second 10 MHz bandwidth subcarriers 0 to 43 are still used as guard subcarriers, and the subsequent 36 guard subcarriers, that is, The subcarrier 44 79 is used to form two physical resource units, and the middle 865 subcarriers, that is, the subcarriers 80 to 944 are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 79 sub-carriers The carrier, that is, the carrier number 945~1023 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 9, for the 10 MHz bandwidth of the first carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then the Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, the physical resource unit in the guard band is mapped to the DRU according to the indication information of the control channel, and the subcarrier replacement is performed according to the subcarrier replacement rule in the two physical resource units, which belongs to the 10 MHz bandwidth of the first carrier. The frequency partition is zero FP0 scheduled and renumbered as DRU4, DRU5 in FP0 in order from left to right (from low frequency to high frequency).

 As shown in FIG. 9, for the 10 MHz bandwidth of the second carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, the physical resource unit in the guard band is mapped to the CRU according to the indication information of the control channel, which belongs to the frequency partition zero FP0 scheduling of the second carrier system, and is renumbered in order from left to right (from low frequency to high frequency). It is CRU8 and CRU9 in FP0.

Example 7: FIG. 10 shows a resource mapping process when two adjacent 10 MHz multi-carrier wireless communication systems in this example are used as a large bandwidth system.

 The FFT point of the 10MHz bandwidth is 1024, and the available subcarriers in the subframe are 864, which are divided into 48 physical resource units, each of which is 18 X 6. The left (low frequency) protection of each 10 MHz bandwidth is 80 The subcarrier is protected, and the right (high frequency) has 79 guard subcarriers.

 Each 10 MHz carrier system resource configuration information is divided into four frequency sub-bands FPO, FP1, FP2, and FP3, wherein each frequency sub-band includes 12 resource elements.

 On the left (low frequency) 10MHz multi-carrier system on the left (low frequency), there are 80 guard subcarriers, and on the right (high frequency) there are 79 guard subcarriers, between two adjacent systems, there are 79+80=159 Protection subcarriers.

 The process of forming resources in the bandwidth protection according to the resource configuration information is:

 As shown in FIG. 10, the leftmost 80 subcarriers of the first 10 MHz bandwidth on the left side, that is, the first 10 MHz bandwidth subcarriers 0 to 79, still serve as guard subcarriers, and the middle 865 subcarriers, that is, 80 to 944. The subcarriers are used as normal data carriers, the next 72 guard subcarriers (945 1016) are used as guard band physical resource units, and the next 7 subcarriers (1017 1023) are used as guard subcarriers. Modulate the data.

 As shown in FIG. 10, the leftmost 8 subcarriers of the second 10 MHz bandwidth on the right side, that is, the second 10 MHz bandwidth subcarriers 0-7, are still used as guard subcarriers, and the subsequent 72 guard subcarriers (8 ~ 79) The four physical resource units are formed, and the middle 865 subcarriers, that is, the 80 to 944 subcarriers are used as normal data carriers, and the next 79 guard subcarriers (944 1023) are used as protection subcarriers.

 According to the resource configuration information, the resource mapping process is:

As shown in FIG. 10, for the 10 MHz bandwidth of the first carrier, subband Partition is performed on 48 physical resource units formed by subcarriers 80 to 1015, and then Mmiband Permutation is performed, and then Perform CRU/DRU allocation, and DRU Subcarrier permutation. The sub-band division (Subband Partition) is performed on the 48 physical resource units formed by 1033 to 1968, and then the microband permutation is performed, and then the CRU DRU allocation and the subcarrier replacement in the DRU are performed. None of these processes involve physical resource elements formed by guarding subcarriers within the band. Finally, four physical resource units in the guard band in the first carrier system are mapped into DRUs according to the indication information of the control channel, and subcarrier replacement is performed according to the subcarrier replacement rule in the four physical resource units. The frequency partitioning of the 10MHz bandwidth of the first carrier is respectively zero FP0 scheduling, and is renumbered as DRU4, D U5, DRU6 in FP0 in the first system in order from left to right (from low frequency to high frequency), DRU7.

 As shown in FIG. 10, for the 10 MHz bandwidth of the second carrier, the subband Partition is performed on the 48 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, the physical resource unit in the guard band is mapped to the CRU according to the indication information of the control channel, which belongs to the frequency partition zero FP0 scheduling of the second carrier system, and is renumbered in order from left to right (from low frequency to high frequency). Example 8 for CRU8, CRU9, CRU10, CRU1L in FP0:

 Figure 11 shows the resource mapping process for two adjacent 20 MHz bandwidths in this example.

 Among them, the 20MHz bandwidth FFT point is 2048, the sub-frame available sub-carrier is 1728, which is divided into 96 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 20MHz bandwidth is 160 The subcarriers are protected, and there are 159 guard subcarriers on the right (high frequency).

 Each 20 MHz carrier system resource configuration information is divided into three frequency sub-bands FP1, FP2, and FP3, wherein each frequency resource unit includes, and includes 32 physical resource units.

On the left (low frequency) 5MHz multi-carrier system on the left (low frequency), there are 160 guard subcarriers, and on the right (high frequency) there are 159 guard subcarriers, between two adjacent systems, 160+159=319 protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 11, the leftmost 160 subcarriers of the first 20 MHz bandwidth on the left side, that is, the first 20 MHz bandwidth subcarriers 0 to 159, still serve as guard subcarriers, and the middle 1729 subcarriers, that is, 160 ~ 1888 The subcarrier is used as a normal data carrier (which contains a zero frequency carrier that does not modulate baseband data), and subcarriers 1889 ~ 1960 are used to participate in the formation of 4 physical resource units, and the remaining 87 subcarriers, ie, 1961 2047 The number carrier still acts as a protection subcarrier.

 As shown in FIG. 11, the leftmost 88 guard subcarriers of the second 20 MHz bandwidth on the right side, that is, the second 20 MHz bandwidth subcarriers 0 to 87, still serve as guard subcarriers, and then 72 guard subcarriers, that is, Subcarrier 88 159, used to form 4 physical resource units, 1729 subcarriers in the middle, that is, 160 1888 subcarriers as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 159 subcarriers That is, the carrier number 1889~2047 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 11, for the 20 MHz bandwidth of the first carrier, first subband Partition (subband Partition) is performed on 96 physical resource units formed by the normal data subcarriers, and then microband permutation is performed, and then performed. CRU DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partitioning zero FP0 scheduling of the 20 MHz bandwidth of the first carrier, and is renumbered as FP0. CRU0, CRUU CRU2, CRU3.

As shown in FIG. 11, for the 20 MHz bandwidth of the second carrier, first subband Partition (subband Partition) is performed on 96 physical resource units formed by the normal data subcarriers, and then microband permutation is performed, and then performed. CRU DRU distribution, and DRU Subcarrier permutation. None of these processes involve physical resource elements formed by guarding subcarriers within the band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to the CRU, which belongs to the frequency partition zero FP0 scheduling of the second carrier system, and is renumbered as CRU0 and CRU1 in the FP0. , CRU2, CRU3.

 Example 9:

 Figure 12 shows the resource mapping process for two adjacent 20 MHz bandwidths in this example.

 Among them, the 20MHz bandwidth FFT point is 2048, the sub-frame available sub-carrier is 1728, which is divided into 96 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 20MHz bandwidth is 160 The subcarriers are protected, and there are 159 guard subcarriers on the right (high frequency).

 Each 20 MHz carrier system resource configuration information is divided into three frequency sub-bands FP1, FP2, and FP3, wherein each frequency resource unit includes, and includes 32 physical resource units.

 On the left (low frequency) 5MHz multi-carrier system to the left (low frequency), there are 160 guard subcarriers, and on the right (high frequency) there are 159 guard subcarriers, between two adjacent systems, there are 160+159=319 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 12, the leftmost 160 subcarriers of the first 20 MHz bandwidth on the left side, that is, the first 20 MHz bandwidth subcarriers 0 to 159, still serve as guard subcarriers, and the middle 1729 subcarriers, that is, 160 ~ 1888 The subcarrier is used as a normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), and the subsequent 144 subcarriers, ie, subcarriers 1889-2032, are used to participate in the formation of 8 physical resource units, and the remaining 15 subcarriers The carrier, that is, the carrier number 2033~2047 still acts as a protection subcarrier;

As shown in FIG. 12, the leftmost 142 guard subcarriers of the second 20 MHz bandwidth on the right side, that is, the second 20 MHz bandwidth subcarriers 0 to 141, still serve as guard subcarriers, and the subsequent 18 guard subcarriers, that is, Subcarriers 142~159 are used to form one physical resource unit, and 1729 subcarriers in the middle, that is, 160 1888 subcarriers are used as normal data carriers (including one mismatch) The zero-frequency carrier of the baseband data), the remaining 159 sub-carriers, that is, the 1889 2047 carrier still acts as a protection sub-carrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 12, for the 20 MHz bandwidth of the first carrier, first subband Partition (subband Partition) is performed on 96 physical resource units formed by the normal data subcarriers, and then microband permutation is performed, and then performed. CRU DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partitioning zero FP0 scheduling of the 20 MHz bandwidth of the first carrier, and is renumbered as FP0. CRU0, CRU1, CRU2, CRU3, CRU4, CRU5, CRU6, CRU7.

 As shown in FIG. 12, for the 20 MHz bandwidth of the second carrier, first subband Partition (subband Partition) is performed on 96 physical resource units formed by the normal data subcarriers, and then microband permutation is performed, and then performed. CRU DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partition zero FP0 scheduling of the second carrier system, and is renumbered as CRU0 in FP0.

 Example 10:

 Figure 13 shows the resource mapping process for two adjacent 20 MHz bandwidth multi-carrier systems in the large bandwidth mode in this example.

 Among them, the 20MHz bandwidth FFT point is 2048, the sub-frame available sub-carrier is 1728, which is divided into 96 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 20MHz bandwidth is 160 The subcarriers are protected, and there are 159 guard subcarriers on the right (high frequency).

Each 20MHz carrier system resource configuration information is divided into three frequency subbands for the subframe. FP1, FP2, FP3, where each frequency resource unit contains, contains 32 physical resource units. On the left (low frequency) 5MHz multi-carrier system to the left (low frequency), there are 160 guard subcarriers, and on the right (high frequency) there are 159 guard subcarriers, between two adjacent systems, there are 160+159=319 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 13, the leftmost 160 subcarriers of the first 20 MHz bandwidth on the left side, that is, the first 20 MHz bandwidth subcarriers 0 to 159, still serve as guard subcarriers, and the middle 1729 subcarriers, that is, 160 ~ 1888 The subcarrier is used as the normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), and the remaining 159 guard subcarriers, together with the leftmost 160 guard subcarriers of the second 20 MHz bandwidth on the right (a total of 319 protections) Subcarriers, forming 17 PRUs, followed by a second 20MHz bandwidth of 1729 subcarriers, ie 160 ~ 1888 subcarriers as normal data carriers (which contain a zero frequency carrier that does not modulate baseband data), the remaining 159 The subcarriers, that is, the carrier number 1889~2047 are still used as guard subcarriers.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 13, for the 20 MHz bandwidth of the first carrier, first subband Partition is performed on 96 physical resource units formed by the normal data subcarriers, and then microband permutation is performed, and then performed. CRU DRU allocation, and subcarrier permutation in the DRU. None of these processes involve physical resource elements that form subcarriers within the protection band. For the 20MHz bandwidth of the second carrier, it first performs Subband Partition on the % physical resource units formed by the normal data subcarriers, and then performs microstrip replacement.

(Miniband Permutation), then perform CRU/DRU allocation, and subcarrier replacement in the DRU. None of these processes involve physical resource elements formed by guarding subcarriers within the band. At last,

(Optionally, according to the foregoing indication information of the control channel), the 17 physical resource units in the guard band are mapped into CRUs, which belong to the frequency partition zero FP0 scheduling of the large bandwidth multi-carrier system, and are renumbered as CRU0 in FP0. ~ 17. Example 11:

 Figure 14 shows the resource mapping process for forming an irregular PRU in a large bandwidth mode for two adjacent 5 MHz bandwidths in this example.

 The FFT points of the 5MHz bandwidth are 512, and the number of available subcarriers in the sub-frame is 432, which are divided into 24 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 5MHz bandwidth has 40 The subcarrier is protected, and there are 39 guard subcarriers on the right (high frequency).

 Each 5 MHz carrier system resource configuration information is divided into one frequency sub-band FP0, and the frequency sub-band 0 includes three resource sub-bands (Subband), which includes 12 physical resource units.

 On the left (low frequency) 5MHz multi-carrier system (low frequency), there are 40 guard subcarriers, and on the right (high frequency) there are 39 guard subcarriers, between two adjacent systems, there are 39+40=79 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 14, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 to 472. The subcarrier is used as the normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), the subsequent 39 guard subcarriers and the leftmost 40 guard subcarriers of the second 5 MHz bandwidth on the right (a total of 79 guard subcarriers) For forming 5 irregular PRUs of size (14 subcarriers n time domain symbols), and remaining 9 guard subcarriers. 433 subcarriers in the middle of the second 5MHz bandwidth, that is, subcarriers 41 to 473 are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 39 subcarriers, ie, 474-511 The number carrier still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

As shown in FIG. 14, for the 5 MHz bandwidth of the first carrier, first subband Partition is performed on 24 physical resource units formed by the normal data subcarriers, and then Mmiband Permutation is performed, and then CRU/DRU allocation, and DRU Subcarrier permutation. For the 5 MHz bandwidth of the second carrier, it first performs subband Partition on the 24 physical resource units formed by the normal data subcarriers, then performs Mmiband Permutation, and then performs CRU/DRU allocation, and Subcarrier permutation in the DRU. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the 5 MHz bandwidth of the first carrier or the frequency partition zero FP0 scheduling of the 5 MHz bandwidth of the second carrier. And renumbered as CRU12, CRU13, CRU14, CRU15, CRU16 in FP0.

 Example 12:

 Fig. 15 shows a resource mapping process using an irregular PRU for two adjacent 5 MHz bandwidth multi-carrier wireless communication systems in this example.

 The FFT points of the 5MHz bandwidth are 512, and the number of available subcarriers in the sub-frame is 432, which are divided into 24 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 5MHz bandwidth has 40 The subcarrier is protected, and there are 39 guard subcarriers on the right (high frequency).

 Each 5 MHz carrier system resource configuration information is divided into one frequency sub-band FP0, and the frequency sub-band 0 includes three resource sub-bands (Subband), which includes 12 physical resource units.

 On the left (low frequency) 5MHz multi-carrier system (low frequency), there are 40 guard subcarriers, and on the right (high frequency) there are 39 guard subcarriers, between two adjacent systems, there are 39+40=79 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

As shown in FIG. 15, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 472 subcarriers. The carrier acts as a normal data carrier (which contains a zero-frequency carrier that does not modulate the baseband data), while subcarriers 473-500 are used to participate in the formation of two physical resource units (each containing 14 subcarriers), and the remaining 11 sub-carriers The carrier, ie, the 501st 511 carrier still acts as a guard subcarrier. As shown in FIG. 15, the leftmost 12 guard subcarriers of the second 5 MHz bandwidth on the right side, that is, the second 5 MHz bandwidth subcarriers 0 to 11, still serve as guard subcarriers, and then 28 guard subcarriers, that is, The subcarrier 12 39 is used to form one physical resource unit, and the middle 433 subcarriers, that is, 40 to 472 subcarriers are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 39 subcarriers That is, the carrier number 473 511 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 15, for the 5 MHz bandwidth of the first carrier, the sub-band division (Subband Partition) is performed on the 24 physical resource units formed by the normal data subcarriers, and then the microband permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partitioning of the first carrier, and the frequency partition is zero FP0 scheduling, and is renumbered in the FP0. CRU12, CRU13.

 As shown in FIG. 15, for the 5 MHz bandwidth of the second carrier, first subband Partition is performed on 24 physical resource units formed by the normal data subcarriers, and then Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a CRU, which belongs to the frequency partition zero FP0 scheduling of the second carrier system, and is renumbered as CRU12 and CRU13 in FP0. .

 Example 13:

 Fig. 16 shows a resource mapping process using an irregular PRU for two adjacent 5 MHz bandwidth multi-carrier wireless communication systems in this example.

The FFT points of the 5MHz bandwidth are 512, and the number of available subcarriers in the sub-frame is 432, which are divided into 24 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 5MHz bandwidth has 40 The subcarrier is protected, and there are 39 guard subcarriers on the right (high frequency). Each 5 MHz carrier system resource configuration information is divided into one frequency sub-band FP0, and the frequency sub-band 0 includes three resource sub-bands (Subband), which includes 12 physical resource units.

 On the left (low frequency) 5MHz multi-carrier system (low frequency), there are 40 guard subcarriers, and on the right (high frequency) there are 39 guard subcarriers, between two adjacent systems, there are 39+40=79 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 16, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 472 subcarriers. The carrier acts as a normal data carrier (which contains a zero-frequency carrier that does not modulate the baseband data), while subcarriers 473-500 are used to participate in the formation of two physical resource units (each containing 14 subcarriers), and the remaining 11 sub-carriers The carrier, ie, the 501st 511 carrier still acts as a guard subcarrier.

 As shown in FIG. 16, the leftmost 12 guard subcarriers of the second 5 MHz bandwidth on the right side, that is, the second 5 MHz bandwidth subcarriers 0 to 11, still serve as guard subcarriers, and then 28 guard subcarriers, that is, The subcarrier 12 39 is used to form one physical resource unit, and the middle 433 subcarriers, that is, 40 to 472 subcarriers are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 39 subcarriers That is, the carrier number 473 511 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

As shown in FIG. 16, for the 5 MHz bandwidth of the first carrier, the sub-band division (Subband Partition) is performed on the 24 physical resource units formed by the normal data sub-carriers, and then the Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a DRU, which belongs to the frequency partition of the first carrier, and the frequency partition is zero FP0 scheduling, and is renumbered in the FP0. DRU12, DRU13. As shown in FIG. 16, for the 5 MHz bandwidth of the second carrier, first subband Partition is performed on 24 physical resource units formed by the normal data subcarriers, and then Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a DRU, which belongs to the frequency partition zero FP0 scheduling of the second carrier system, and is renumbered as DRU12 and DRU13 in FP0. .

 Example 14:

 Figure 17 shows the resource mapping process for forming an irregular PRU in a large bandwidth mode for two adjacent 5 MHz bandwidths in this example.

 The FFT points of the 5MHz bandwidth are 512, and the number of available subcarriers in the sub-frame is 432, which are divided into 24 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 5MHz bandwidth has 40 The subcarrier is protected, and there are 39 guard subcarriers on the right (high frequency).

 Each 5 MHz carrier system resource configuration information is divided into one frequency sub-band FP0, and the frequency sub-band 0 includes three resource sub-bands (Subband), which includes 12 physical resource units.

 On the left (low frequency) 5MHz multi-carrier system (low frequency), there are 40 guard subcarriers, and on the right (high frequency) there are 39 guard subcarriers, between two adjacent systems, there are 39+40=79 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

As shown in FIG. 17, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 to 472. The subcarrier is used as the normal data carrier (which contains a zero frequency carrier that does not modulate the baseband data), the subsequent 39 guard subcarriers and the leftmost 40 guard subcarriers of the second 5 MHz bandwidth on the right (a total of 79 guard subcarriers) For forming 5 irregular PRUs of size (14 subcarriers n time domain symbols), and remaining 9 guard subcarriers. 433 subcarriers in the middle of the second 5 MHz bandwidth, ie, 41 473 subcarriers as normal data carriers (its It contains a zero-frequency carrier that does not modulate the baseband data. The remaining 39 subcarriers, ie, the 473-511 carrier, still act as guard subcarriers.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 17, for the 5 MHz bandwidth of the first carrier, first subband Partition is performed on 24 physical resource units formed by the normal data subcarriers, and then Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and subcarrier permutation in the DRU. For the 5 MHz bandwidth of the second carrier, it first performs Subband Partition on the 24 physical resource units formed by the normal data subcarriers, then performs Mmiband Permutation, and then performs CRU/DRU allocation, and Subcarrier permutation in the DRU. Finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is mapped to a DRU, which belongs to the 5 MHz bandwidth of the first carrier or the frequency partition zero FP0 scheduling of the 5 MHz bandwidth of the second carrier. And renumbered as DRU12, DRU13, DRU14, DRU15, DRU16 in FP0.

 Example 15:

 Figure 18 shows the resource mapping process for two adjacent 5 MHz multi-carrier wireless communication systems in this example in a special case.

 In the two multi-carrier systems with 5 MHz bandwidth in the figure, the base station side provides support for some special types of terminals. In some subframes, if the PRU formed by the protection carrier is mapped to a DRU, the PRU formed by the subcarriers will be protected. The PRU formed by the normal data subcarrier is subjected to subcarrier replacement.

 The FFT points of the 5MHz bandwidth are 512, and the number of available subcarriers in the sub-frame is 432, which are divided into 24 physical resource units, each of which is 18 x 6. The left (low frequency) protection of each 5MHz bandwidth has 40 The subcarrier is protected, and there are 39 guard subcarriers on the right (high frequency).

Each 5 MHz carrier system resource configuration information is divided into one frequency sub-band FP0, and the frequency sub-band 0 includes three resource sub-bands (Subband), which includes 12 physical resource units. On the left (low frequency) 5MHz multi-carrier system (low frequency), there are 40 guard subcarriers, and on the right (high frequency) there are 39 guard subcarriers, between two adjacent systems, there are 39+40=79 Protection subcarriers.

 According to the resource configuration information, the process of forming resources in the protection bandwidth is:

 As shown in FIG. 18, the leftmost 40 subcarriers of the first 5 MHz bandwidth on the left side, that is, the first 5 MHz bandwidth subcarriers 0 to 39, still serve as guard subcarriers, and the middle 433 subcarriers, that is, 40 to 472. The subcarrier is used as a normal data carrier (which includes a zero frequency carrier that does not modulate baseband data), and subcarriers 473 to 490 are used to participate in forming one physical resource unit, and the remaining 21 subcarriers, ie, No. 491 511 The carrier still acts as a guard subcarrier.

 As shown in FIG. 18, the leftmost 22 guard subcarriers of the second 5 MHz bandwidth on the right side, that is, the second 5 MHz bandwidth subcarriers 0 to 21, still serve as guard subcarriers, and the subsequent 18 guard subcarriers, that is, The subcarrier 22 39 is configured to form one physical resource unit, and the middle 433 subcarriers, that is, 40 to 472 subcarriers are used as normal data carriers (including a zero frequency carrier that does not modulate baseband data), and the remaining 39 subcarriers That is, the carrier number 473 511 still acts as a protection subcarrier.

 According to the resource configuration information, the resource mapping process is:

 As shown in FIG. 18, for the 5 MHz bandwidth of the first carrier, first subband Partition is performed on 24 physical resource units formed by the normal data subcarriers, and then Mmiband Permutation is performed, and then performed. CRU/DRU allocation, and finally, (optionally, according to the indication information of the foregoing control channel), the physical resource unit in the guard band is replaced with all DRUs in the frequency partition FP0, and the replaced DRU is obtained. The frequency partitioning of the 5 MHz bandwidth belonging to the first carrier is zero FP0 scheduling.

As shown in FIG. 18, for the 5 MHz bandwidth of the second carrier, first subband Partition is performed on 24 physical resource units formed by the normal data subcarriers, and then Mmiband Permutation is performed, and then performed. CRU/DRU allocation, last, (can Optionally, according to the indication information of the foregoing control channel, the physical resource unit in the guard band is replaced with all DRUs in the frequency partition FP0, and the replaced DRU is obtained, and all of them belong to the 5 MHz bandwidth of the first carrier. The frequency partition is zero FP0 scheduling.

 In summary, by means of the technical solution of the present invention, by protecting the subcarriers of the multicarrier system, the protection subcarriers between the continuous carrier frequencies are mapped to physical resource units, and the protection between the discontinuous carrier frequencies is maintained. The original function of subcarriers solves the problem of resource mapping in multi-carrier systems, standardizes the resource mapping process of radio resource units in multi-carrier systems, and adapts the mapping of resources to the characteristics of multi-carrier OFDMA systems. The base station that helps to use multiple carrier frequencies can select an appropriate guard band resource mapping method according to scheduling requirements, thereby achieving more flexible and full use of the entire spectrum resource, and ensuring a multi-carrier system (for example, based on OFDMA technology) Frequency communication efficiency of wireless communication systems).

 The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

 A resource mapping method, comprising:

 The guard subcarriers between consecutive carrier frequencies are taken as physical resource units.

 The method according to claim 1, wherein the method further comprises: using a guard subcarrier between the discontinuous carrier frequencies for protection between carrier frequencies, and not between non-continuous carrier frequencies The protected subcarriers are mapped to physical resource units.

 The method according to claim 1, wherein the protection subcarrier is: all or part of the protection subcarriers between the continuous carrier frequencies.

 The method according to claim 1, wherein the frequency interval between the consecutive carrier frequencies is an integer multiple of the subcarrier spacing.

 The method according to claim 1, wherein the physical resource unit belongs to a 0th frequency partition of a carrier frequency in which it is located.

 The method according to claim 1, wherein the physical resource unit belongs to some or all of the frequency partitions other than the 0th frequency partition of the carrier frequency in which it is located.

 The method according to claim 1, wherein the method further comprises: performing subband division and/or microstrip replacement on the physical resource unit when the physical resource unit is mapped to a logical resource unit .

 The method according to claim 7, wherein, when performing logical resource unit mapping, the physical resource unit independently performs at least one of the following operations: DRU allocation, subcarrier replacement, and CRU allocation.

 The method according to claim 7, wherein the type of the logical resource unit comprises at least one of the following: a continuous resource unit, a distributed resource unit.

The method according to claim 9, wherein before performing the logical unit mapping, the method further comprises: determining a type of the logical unit according to a pre-configuration of the system or control information of the control channel.

The method according to claim 10, wherein, when the determined logical unit type is a distributed resource unit, and the logical unit mapping is performed, the physical resource mapped by the protection subcarrier according to a predetermined subcarrier mapping rule The unit is mapped to a distributed resource unit.

 The method according to claim 10, wherein the control information includes an indication bit for indicating a logical resource unit type, and the indication bit is used to indicate a physical of a protected subcarrier mapping with an uplink frequency. The logical resource unit type that the resource unit needs to map.

 13. The method of claim 9, further comprising: sorting and numbering the consecutive resource units, and/or distributing resource units.

 The method according to any one of claims 1 to 13, wherein the continuous carrier frequency refers to: two adjacent carrier frequencies, and the protection subcarriers between the two carrier frequencies The frequency domain interval is less than or equal to a predetermined value.

 The method according to any one of claims 1 to 13, characterized in that the number and/or identification of guard subcarriers as physical resource units are indicated according to one of the following ways: Pre-configuration of the system, control channel Control information, management messages.

 The method according to any one of claims 1 to 13, characterized in that the protection subcarrier between the continuous carrier frequencies is used as a physical resource unit according to one of the following ways: Pre-configuration of the system Control information of the control channel and management messages.

 The method according to any one of claims 1 to 13, wherein the frequency partition to which the physical resource unit belongs is indicated according to one of the following ways: pre-configuration of the system, control information of the control channel, Manage messages.