CN101815253B - Method for transmitting control information and unicast service control channel region information - Google Patents

Abstract

The invention discloses a transmission method of control information and unicast service control channel area information. Wherein, all or part of the frequency resources in the time zone for transmitting the control information includes: multiple frequency reuse zones or one frequency reuse zone. The frequency reuse factors in multiple frequency reuse areas are different, and each frequency reuse area includes one or more frequency sets, the transmission method of the control information includes: the base station transmits on the frequency reuse area with the smallest frequency reuse factor in the above time area control information. According to the scheme provided by the present invention, the control information of the wireless communication system can be transmitted reasonably and efficiently, and the performance of the entire wireless communication system can be improved.

Description

Transmission method of control information and unicast service control channel area information

technical field

The invention relates to the technical field of mobile communication, in particular to a transmission method of control information and unicast service control channel area information.

Background technique

In a wireless communication system, a base station refers to a device that provides services to terminals. The direction of the terminal, the uplink (UpLink, referred to as UL for short, also referred to as the reverse link) refers to the direction from the terminal to the base station. Multiple terminals can simultaneously send data to the base station through the uplink, and can also receive data from the base station through the downlink at the same time.

In a data transmission system using base station scheduling control, system resources are usually allocated by base station scheduling, for example, the base station allocates resources for downlink transmission and resources that can be used by terminals for uplink transmission.

Time Division Duplex (TDD for short) or Frequency Division Duplex (FDD for short) wireless communication system using Orthogonal Frequency Division Multiplex Access (OFDMA) technology (For example, IEEE 802.16m), non-user-specific control information (Non-user-specific control information, or, Non-user-specific Advanced-MAP) refers to information that is not specific to a specific user or a specific user group. Usually, non-user-specific control information includes information required to decode user-specific control information (User-specific control information), where user-specific control information refers to information for a specific user or a specific user group, usually including resource Assignment Advanced-MAP, Power Control Advanced-MAP, Hybrid Automatic Repeat Request (HARQ for short) feedback information (HARQ Feedback Advanced-MAP), etc.

其中，W₁，W₂，W₃构成的频率重用区域的频率重用因子(Reuse Factor)为1/3(在某些文献中定义这种情况下的频率重用因子为3)，即W₁，W₂，W₃中的频率资源分配给三个相邻小区中一个小区，而其他两个小区则不能使用该频率资源，或者其他两个小区需要采用限制其发射功率的方法来使用该频率资源，称W₁，W₂，W₃构成的频率重用区域的Reuse Factor＝1/3；W₁₂，W₂₃，W₁₃构成的频率重用区域的频率重用因子为2/3(在某些文献中定义这种情况下的频率重用因子为3/2)，即W₁₂，W₂₃，W₁₃中的频率资源分配给三个相邻小区中两个小区，而第三个小区则不能使用该频率资源或者需要采用限制其发射功率的方法来使用该频率资源，称W₁₂，W₂₃，W₁₃构成的频率重用区域的Reuse Factor＝2/3；W₁₂₃构成的频率重用区域的频率重用因子为1，即三个相邻小区都可以不加限制的使用该频率资源，称W₁₂₃构成的频率重用区域的Reuse Factor＝1。从图1可以看出，每个小区中，不同频率集合由于干扰级别的不同导致其下行覆盖范围是不一样的，对小区A而言，频率集合W₁上的下行干扰级别最小，覆盖范围最大，对小区B而言，频率集合W₂的下行干扰级别最小，覆盖范围最大，对小区C而言，频率集合W₃的干扰级别最小，覆盖范围最大。In the actual application of the TDD or FDD wireless communication system using the OFDMA technology, a fractional frequency reuse (Fractional Frequency Reuse, FFR for short) technology is usually used. Fig. 1 indicates the realization of a partial frequency reuse technology. In Fig. 1, the frequency resource allocation mode of three adjacent cells and the transmission power limitation (power level) of each frequency set are rescued. As shown in Figure 1, all available downlink frequency resources are divided into 7 frequency sets

Among them, the frequency reuse factor (Reuse Factor) of the frequency reuse area formed by W ₁ , W ₂ , and W ₃ is 1/3 (the frequency reuse factor in this case is defined as 3 in some documents), that is, W ₁ , The frequency resources in W ₂ and W ₃ are allocated to one of the three adjacent cells, but the other two cells cannot use this frequency resource, or the other two cells need to use the method of limiting their transmit power to use this frequency resource , said W ₁ , W ₂ , Reuse Factor=1/3 of the frequency reuse area formed by W ₃ ; W ₁₂ , W ₂₃ , the frequency reuse factor of the frequency reuse area formed by W ₁₃ is 2/3 (in some documents Define the frequency reuse factor in this case as 3/2), that is, the frequency resources in W ₁₂ , W ₂₃ , and W ₁₃ are allocated to two of the three adjacent cells, while the third cell cannot use the frequency resources or need to use the method of limiting its transmission power to use the frequency resource, said W ₁₂ , W ₂₃ , the Reuse Factor of the frequency reuse area formed by W ₁₃ =2/3; the frequency reuse factor of the frequency reuse area formed by W ₁₂₃ is 1, that is, all three adjacent cells can use the frequency resource without restriction, and it is said that Reuse Factor=1 in the frequency reuse area formed by W ₁₂₃ . It can be seen from Figure 1 that in each cell, different frequency sets have different downlink coverage due to different interference levels. For cell A, the downlink interference level on frequency set W ₁ is the smallest and the coverage is the largest , for cell B, the frequency set W ₂ has the smallest downlink interference level and the largest coverage; for cell C, the frequency set W ₃ has the smallest interference level and the largest coverage.

At present, in a wireless communication system using OFDMA technology (especially FFR technology), there is no specific solution for how to transmit non-user-specific control information and user-specific control information reasonably and efficiently.

Contents of the invention

In view of this, the present invention provides a transmission method of control information and unicast service control channel area information to solve the problem that control information cannot be transmitted reasonably and efficiently in the prior art.

According to one aspect of the present invention, a method for transmitting control information is provided. Wherein, all or part of the frequency resources in the time zone for transmitting the control information includes: multiple frequency reuse areas, the frequency reuse factors in the multiple frequency reuse areas are different, and each frequency reuse area includes one or more frequency sets.

The method for transmitting control information according to the present invention includes: the base station transmits the control information in the frequency reuse area where the frequency reuse factor of the time area is the smallest.

Specifically, the base station may transmit the above control information on part or all of the distributed logic resources in the frequency reuse area with the smallest frequency reuse factor.

Alternatively, the base station transmits the above control information on part or all of the frequency sets in the frequency reuse area with the smallest frequency reuse factor.

Alternatively, the base station transmits the above control information on the frequency set with the highest power level in the frequency reuse area with the smallest frequency reuse factor.

Further, the base station may transmit the above control information on part or all of the distributed logical resources of the frequency set with the highest power level.

Specifically, the foregoing control information includes: non-user-specific control information or user-specific control information.

Wherein, the non-user-specific control information includes, but is not limited to: information indicating resources used for transmitting the user-specific control information.

Moreover, the non-user-specific control information may further include: an identifier for indicating whether to transmit non-user-specific control information and/or user-specific control information in frequency reuse regions other than the frequency reuse region with the smallest frequency reuse factor.

The user-specific control information includes but is not limited to at least one of the following: resource allocation information, power control information, and hybrid automatic repeat request feedback information.

Specifically, the base station may transmit the above control information in any manner of broadcast, multicast, or unicast.

According to another aspect of the present invention, a method for transmitting unicast service control channel area information is provided, wherein all or part of the frequency resources in the time zone for transmitting unicast service control channel area information include multiple frequency reuse areas, and Each frequency reuse area includes one or more frequency sets.

The method for transmitting the area information of the unicast service control channel according to the present invention includes: the base station transmits the above-mentioned unicast service control channel area information in the frequency set meeting the preset condition in the above-mentioned time zone.

Wherein, the foregoing preset conditions include: the downlink interference level is the smallest or the downlink coverage is the largest.

Specifically, the above unicast service control channel area information includes but not limited to: non-user-specific control information and/or user-specific control information.

Further, the base station notifies the terminal of the resources used to transmit the area information of the unicast service control channel through a broadcast channel.

Specifically, the base station may transmit the above-mentioned unicast service control channel area information on some or all of the distributed logical resources of the frequency set meeting the above-mentioned preset condition.

In addition, the base station may transmit the above-mentioned unicast service control channel area information in any manner of broadcast, multicast, or unicast.

According to another aspect of the present invention, a method for transmitting control information is provided. Wherein, all or part of the frequency resources in the time zone for transmitting the control information includes: multiple frequency reuse areas, frequency reuse factors in the multiple frequency reuse areas are different, and each frequency reuse area includes one or more frequency sets.

The method for transmitting control information according to the present invention includes: the base station indicates in the superframe header the frequency reuse area or frequency set for sending the control information.

Specifically, when the superframe header indicates that the control information is to be sent in the frequency reuse area with the smallest frequency reuse factor, the base station transmits the above control information on part or all of the distributed logic resources in the frequency reuse area.

Alternatively, the base station transmits the above control information on part or all of the frequency sets in the frequency reuse area with the smallest frequency reuse factor.

Alternatively, the base station transmits the above control information on the frequency set with the highest power level in the frequency reuse area with the smallest frequency reuse factor.

Further, the base station may transmit the above control information on part or all of the distributed logical resources of the frequency set with the highest power level.

Specifically, the foregoing control information includes: non-user-specific control information and/or user-specific control information.

Wherein, the non-user-specific control information includes, but is not limited to: information indicating resources used for transmitting the user-specific control information.

Moreover, the non-user-specific control information may also include: indicating whether to transmit user-specific control information in other frequency reuse regions except the frequency reuse region with the smallest frequency reuse factor.

The user-specific control information includes but is not limited to at least one of the following: resource allocation information, power control information, and hybrid automatic repeat request feedback information.

Specifically, the foregoing time region is composed of one or more subframes.

According to another aspect of the present invention, a method for transmitting control information is provided. Wherein, all or part of the frequency resources in the time zone for transmitting the control information includes: one frequency reuse zone, and the frequency reuse zone includes multiple frequency sets.

The method for transmitting control information according to the present invention includes: the base station transmits control information on the frequency set with the highest power level constituting the frequency reuse area.

Specifically, the base station may transmit the above control information on part or all of the distributed logical resources of the frequency set with the highest power level.

Specifically, the foregoing control information includes: non-user-specific control information or/or user-specific control information.

Wherein, the non-user-specific control information includes, but is not limited to: information indicating resources used for transmitting the user-specific control information.

Moreover, the non-user-specific control information may also include: indicating whether to transmit user-specific control information in other frequency reuse regions except the frequency reuse region with the smallest frequency reuse factor.

The user-specific control information includes but is not limited to at least one of the following: resource allocation information, power control information, and hybrid automatic repeat request feedback information.

Specifically, the foregoing time region is composed of one or more subframes.

According to another aspect of the present invention, a method for transmitting control information is provided. Wherein, all or part of the frequency resources in the time zone for transmitting control information includes: one or more frequency reuse areas, frequency reuse factors in different frequency reuse areas are different, and each frequency reuse area includes one or more frequency sets.

The method for transmitting control information according to the present invention includes: the base station adopts the same or different encoding parameters when transmitting the control information on different frequency sets.

Specifically, the base station indicates the frequency set or frequency reuse area for sending the control information through the superframe header.

Specifically, the encoding parameters used when sending the control information on different frequency sets are standard default configurations.

Specifically, the base station indicates a coding parameter for sending the control information through a superframe header.

Further, the encoding parameters include but are not limited to at least one of the following: modulation and encoding scheme, number of repetitions, encoding rate, multi-antenna encoding/precoding parameters, and number of occupied resources.

Specifically, the foregoing control information includes: non-user-specific control information and/or user-specific control information.

Wherein, the non-user-specific control information includes, but is not limited to: information indicating resources used for transmitting the user-specific control information.

Moreover, the non-user-specific control information may also include: indicating whether to transmit user-specific control information in other frequency reuse regions except the frequency reuse region with the smallest frequency reuse factor.

The user-specific control information includes but is not limited to at least one of the following: resource allocation information, power control information, and hybrid automatic repeat request feedback information.

Specifically, the foregoing time region is composed of one or more subframes.

According to at least one solution of the present invention, a method for transmitting control information reasonably and efficiently is provided by transmitting non-user-specific control information and user-specific control information in the frequency reuse region where the frequency reuse factor of the time region is the smallest, The problem that the control information cannot be transmitted reasonably and efficiently in the prior art is solved, so that the control information of the wireless communication system can be transmitted reasonably and efficiently, and the performance of the entire wireless communication system is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of an implementation of a partial frequency reuse technology in the prior art;

Fig. 2 is a schematic diagram of a frame structure of IEEE 802.16m;

FIG. 3 is a schematic diagram of a frequency resource allocation method;

Fig. 4 is the flowchart of embodiment one;

FIG. 5 is a schematic diagram of a frame structure;

Fig. 6 is the flowchart of embodiment two;

Fig. 7 is the flowchart of embodiment three;

Fig. 8 is the flow chart of embodiment four;

Fig. 9 is the flow chart of embodiment five;

Fig. 10 is the flow chart of embodiment six;

Fig. 11 is the flow chart of embodiment seven;

FIG. 12 is a schematic diagram of another frequency resource allocation method;

Figure 13 is a flow chart of Embodiment 8;

Fig. 14 is the flow chart of embodiment nine;

Fig. 15 is the flow chart of embodiment ten;

Figure 16 is a flow chart of Embodiment 11;

Fig. 17 is a flowchart of Embodiment 12.

Detailed ways

Functional Overview

The embodiment of the present invention addresses the requirement of how to transmit control information such as non-user-specific control information and/or user-specific control information, and proposes a control information transmission method and a unicast service control channel area information transmission method. In the embodiment of the present invention, when the base station sends the control information, it transmits the control information at least in the frequency reuse area with the smallest frequency reuse factor in the current time area, or indicates the frequency reuse area where the control information is sent through the field in the superframe header or Frequency set, the superframe header carries system configuration information, usually composed of a primary superframe header and a secondary superframe header (also called primary broadcast channel or secondary broadcast channel), followed by the primary synchronization channel or secondary synchronization channel ; and when sending the unicast service control channel area information, the base station transmits the unicast service control channel area information at least in the frequency set with the smallest downlink interference level or the largest small line coverage in the current time area.

Wherein, the above-mentioned control information includes: user-specific control information (ie, User specific control information) and non-user-specific control information (ie, Non-user-specific control information, or, Non-user-specific Advanced-MAP).

The above unicast service control channel area information includes but not limited to: user-specific control information and non-user-specific control information.

The above time region may be composed of one or more subframes.

In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

According to an embodiment of the present invention, a method for transmitting control information is firstly provided, wherein part or all of the frequency resources in the time zone for transmitting the control information include: multiple frequency reuse zones, wherein each frequency in the multiple frequency reuse zones The frequency reuse factors of the reuse areas are different, and each frequency reuse area includes one or more frequency sets.

The method for transmitting control information according to the embodiment of the present invention includes: the base station transmits the control information in the frequency reuse area in which the frequency reuse factor of the time area is the smallest.

It should be noted that the frequency reuse factor (Reuse Factor) in the embodiment of the present invention is defined in the following manner:

Assuming that a frequency is allocated to N adjacent cells, but the frequency resource can only be used by M cells in the N cells, then the frequency reuse factor of the frequency resource is M/N, where N is an integer greater than 1 , M is an integer greater than or equal to 1, and N is greater than or equal to M.

For another definition of the frequency reuse factor in the field, that is, in the above situation, the frequency reuse factor of the frequency resource is defined as N/M, then the method provided by the embodiment of the present invention is: the base station in the above time zone The control information is transmitted on the frequency reuse area with the largest frequency reuse factor.

Wherein, the above-mentioned control information includes: non-user-specific control information and user-specific control information, wherein the non-user-specific control information includes: information indicating resources used to transmit user-specific control information; user-specific control information includes but It is not limited to: resource allocation information, power control information, HARQ feedback information, and the like.

In a specific implementation process, the base station may transmit the above control information in any one of broadcast, multicast and unicast manners in the frequency reuse area with the minimum frequency reuse factor. And, if only one frequency set is included in the frequency reuse area with the smallest frequency reuse factor, the base station can transmit the control information on some or all of the distributed logical resources in the frequency reuse area; if the frequency reuse area with the smallest frequency reuse factor If multiple frequency sets are included, the base station may transmit the control information on some or all frequency sets in the multiple frequency sets, or the base station may also transmit the control information at the highest power level (that is, the transmission power limit situation) among the multiple frequency sets The control information is transmitted on the frequency set with the highest power level. Further, the base station may transmit the control information on part or all of the distributed logical resources of the frequency set with the highest power level.

The base station may transmit the above control information on one or more frequency reuse sets in the frequency reuse area with the minimum frequency reuse factor. If the base station transmits the control information on the frequency set with the highest power level among the above multiple frequency sets, at the same time The control information is transmitted on other frequency sets. If the control information is non-user-specific control information, the non-user-specific control information also includes: indicating whether to transmit non-user-specific control information on other frequency sets except the frequency set with the highest power level. Identification of proprietary control information and/or user-specific control information.

In a specific implementation process, the above identifier can be represented by a field, and the length of this field can be determined according to actual needs.

In addition, the base station can transmit the control information in other frequency reuse areas besides the frequency reuse area with the minimum frequency reuse factor. Therefore, when transmitting non-user-specific control information, the non-user-specific The control information also includes: indicating whether to transmit non-user-specific control information and/or user-specific control information in other frequency reuse regions except the above frequency reuse region with the smallest frequency reuse factor.

Moreover, when the base station transmits the non-user-specific control information, it may transmit the resources used by the terminal to transmit the non-user-specific control information through the broadcast channel, that is, which time-frequency resources are used to transmit the non-user-specific control information.

Specifically, in the method for transmitting control information in the embodiment of the present invention, the time region may include one or more subframes.

The control information transmission method provided by the embodiment of the present invention can reasonably and efficiently transmit the control information of the wireless communication system, and improve the performance of the entire wireless communication system.

In order to further understand the above-mentioned technical solution provided by the embodiment of the present invention, the method for transmitting the above-mentioned control information provided by the embodiment of the present invention will be described in detail below through specific embodiments.

In the following embodiments, taking the IEEE 802.16m system as an example, the technical solutions provided by the embodiments of the present invention are described. Figure 2 is a schematic diagram of the frame structure of IEEE 802.16m. As shown in Figure 2, the entire wireless resource is divided into super Different structural granularities such as frame, frame, subframe and OFDM symbol. Specifically, the wireless resource can be firstly divided into time-continuous super frames (Super Frame), the time length of each super frame is 20 milliseconds, and each super frame is composed of four frames (Frame) with a time length of 5 milliseconds, Each frame contains 8 subframes (SF), and each subframe consists of 6 OFDM symbols.

其中，W₁，W₂，W₃构成的频率重用区域的频率重用因子为1/3，即W₁，W₂，W₃中的频率资源分配给三个相邻小区中一个小区，而其他两个小区则不能使用该频率资源或者需要采用限制其发射功率的方法来使用该频率资源；W₁₂₃构成的频率重用区域的频率重用因子为1，即三个相邻小区都可以不加限制的使用该频率资源，称W₁₂₃构成的频率重用区域的Reuse Factor＝1。从图3可以看出，每个小区中不同频率集合由于干扰级别的不同导致其下行覆盖范围不一样，对小区A，频率集合W₁上的下行干扰级别最小，覆盖范围最大，对小区B，频率集合W₂的下行干扰级别最小，覆盖范围最大，对小区C，频率集合W₃的干扰级别最小，覆盖范围最大。In the following embodiment, it is assumed that the frequency resource allocation method of three adjacent cells is shown in Figure 3, and all available downlink frequency resources are divided into four frequency sets

Among them, the frequency reuse factor of the frequency reuse area composed of W ₁ , W ₂ , and W ₃ is 1/3, that is, the frequency resources in W ₁ , W ₂ , and W ₃ are allocated to one of the three adjacent cells, while the other The two cells cannot use the frequency resource or need to use the method of limiting their transmission power to use the frequency resource; the frequency reuse factor of the frequency reuse area formed by W ₁₂₃ is 1, that is, the three adjacent cells can be unrestricted Using this frequency resource, it is said that Reuse Factor=1 in the frequency reuse area formed by W ₁₂₃ . It can be seen from Figure 3 that different frequency sets in each cell have different downlink coverage due to different interference levels. For cell A, the downlink interference level on frequency set _W1 is the smallest and the coverage is the largest. For cell B, The downlink interference level of the frequency set W ₂ is the smallest and the coverage area is the largest. For the cell C, the interference level of the frequency set W ₃ is the smallest and the coverage area is the largest.

Embodiment one

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples to illustrate the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 3 .

FIG. 4 is a flow chart of this embodiment. It is assumed that BS-A needs to transmit non-user-specific control information on a subframe of a superframe, and the frequency resource of the subframe is divided into four frequency sets as shown in FIG. 3 . Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 4, BS-A transmission of non-user-specific control information mainly includes the following steps:

Step 401 , BS-A broadcasts non-user-specific control information on the frequency set W ₁ with the highest power level in the frequency reuse area with a frequency reuse factor of 1/3 in the subframe.

In step 402, the terminal uses known information to decode the above-mentioned non-user-specific control information, and determines a subsequent work flow by analyzing the information.

In the specific implementation process, BS-A can transmit non-user-specific control information on some or all of the distributed logical resource blocks of _W1 . In the specific implementation process, the distributed logical resource blocks can be configured according to the standard default , the BS-A may also notify the terminal in the secondary broadcast channel which distributed logical resource blocks to transmit; and, BS-A may also use other distributed logical resource blocks other than the standard default configuration distributed logical resource blocks of ₁ Transmit non-user-specific control information on the block set; in addition, BS-A can also transmit non-user-specific control information on frequency sets other than W ₁ in the frequency reuse area where the frequency reuse factor is 1/3; and, BS-A can also transmit non-user-specific control information on the frequency reuse area with a frequency reuse factor of 1. These situations are described below.

Notify the terminal of the distributed logical resource blocks that transmit non-user-specific control information through the secondary broadcast channel

In the frame structure shown in Figure 5, the first subframe (i.e. SF0) of each frame needs to transmit non-user-specific control information, then before step 401, BS-A sends the composition frequency reuse factor through the secondary broadcast channel as In 1/3 of the frequency reuse area, the frequency set _W1 with the highest power level transmits the information on the number of distributed logical resource blocks (Distributed Resource Units) required for non-user-specific control information, and then executes step 401, that is, BS-A in The corresponding distributed logical resource blocks on the frequency set W ₁ transmit the non-user-specific control information to the terminal in a broadcast mode (or in a multicast mode or unicast mode).

Among them, the non-user-specific control information (which may be referred to as non-user-specific control information A) transmitted by BS-A on the corresponding distributed logical resource block on W ₁ includes whether A field for sending non-user-specific control information (called non-user-specific control information B), when this field indicates that non-user-specific control information B needs to be sent in a frequency reuse area with a frequency reuse factor of 1, non-user-specific The control information A may also include information on the number of distributed logical resource blocks required to transmit the non-user-specific control information B in the frequency set W ₁₂₃ that describes the frequency reuse area with a frequency reuse factor of 1.

The terminal obtains the number of distributed logical resource blocks (DRUCount) required to transmit non-user-specific control information on the frequency set W ₁ of the subframe by decoding the secondary broadcast channel, so as to decode the information from the specific index on the frequency set W ₁ The set of distributed logical resource blocks whose number is equal to the DRU Count starting with the number, obtains the non-user-specific control information A, wherein, the specific index number can be configured by standard default. The terminal learns from the non-user-specific control information A whether the non-user-specific control information B is transmitted on the frequency set W ₁₂₃ . The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

Transmission of non-user-specific control information on distributed logical resource blocks configured by standard defaults

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and the distributed logical resources of BS-A on the frequency set W ₁ are configured by standard default The non-user-specific control information is transmitted to the terminal by broadcasting on the block set, wherein the non-user-specific control information (referred to as non-user-specific control information A) includes whether to send A field of non-user-specific control information. When the field indicates that non-user-specific control information (referred to as non-user-specific control information B) needs to be sent in a frequency reuse area with a frequency reuse factor of 1, the non-user-specific control information A may also contain information on the number of distributed logical resource blocks required to transmit non-user-specific control information B in the frequency set W ₁₂₃ that describes the frequency reuse area with a frequency reuse factor of 1.

The terminal obtains the non-user-specific control information A by successfully decoding the resources for sending the non-user-specific control information configured by standard default on the frequency set W ₁ . The terminal learns whether the non-user-specific control information B is transmitted on the frequency set W ₁₂₃ from the non-user-specific control information. If yes, the terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

The base station also transmits non-user-specific control information on other distributed logical resource blocks other than the standard default configuration of the frequency set _W1

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and the standard default configuration of BS-A (cell A in Figure 3) on _W1 The non-user-specific control information (referred to as non-user-specific control information A) is transmitted to the terminal by broadcasting on the distributed logical resource block set. The non-user-specific control information includes other _distributed Whether the field of non-user-specific control information (referred to as non-user-specific control information B) is also transmitted on the logical resource block, this field can have two forms:

One form is an indication bit, which is used to indicate whether non-user-specific control information B is also transmitted on other distributed logical resource blocks of frequency set W ₁ , and if transmission is required, the transmission of non-user-specific control information B is required Resources are available through standard default configuration;

Another form is to include information about the number of distributed logical resource blocks on the frequency set W ₁ required to transmit the non-user-specific control information B.

The terminal obtains the non-user-specific control information A by successfully decoding the resources for sending the non-user-specific control information A configured by standard on the frequency set W ₁ by default. The terminal learns from the non-user-specific control information whether non-user-specific control information B is transmitted on other distributed logical resource blocks of the frequency set, so that the terminal obtains non-user-specific control information B according to relevant instructions. The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

Transmit non-user-specific control information on frequency sets other than W ₁ in the frequency reuse area with a frequency reuse factor of 1/3

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and the standard default configuration of BS-A (cell A in Figure 3) on _W1 The non-user-specific control information is transmitted to the terminal by broadcasting on the distributed logical resource block set. The non-user-specific control information (referred to as non-user-specific control information A) contains information describing whether to transmit user-specific The field of control information, as shown in Figure 3, this field contains 3 bits, respectively indicating whether user-specific control information will be transmitted on the frequency sets W ₂ , W ₃ , and W ₁₂₃ , for example, when the field is "011" , indicating that user-specific control information will be transmitted on frequency sets W ₃ and W ₁₂₃ .

The terminal obtains the non-user-specific control information by successfully decoding the resources used to transmit the non-user-specific control information configured by standard default on the frequency set W ₁ . The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

Embodiment two

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples, and the transmission of user-specific control information by the base station (BS-A) of cell A in FIG. 3 is described.

FIG. 6 is a flow chart of this embodiment. It is assumed that BS-A needs to transmit non-user-specific control information on a subframe of a superframe, and the frequency resource of the subframe is divided into four frequency sets as shown in FIG. 3 . Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 6, BS-A transmission of user-specific control information mainly includes the following steps:

Step 601 , BS-A sends user-specific control information on the frequency set W ₁ with the highest power level in the frequency reuse area with a frequency reuse factor of 1/3 in the subframe.

In step 602, the terminal uses known information to decode the above-mentioned user-specific control information, and determines a follow-up workflow by analyzing the information.

In a specific implementation process, the user-specific control information includes one of the following or any combination thereof: resource allocation information, power control information, and HARQ feedback information, wherein the resource allocation information mainly includes downlink resource allocation information. A terminal can be a single terminal or a terminal group. The power control information and the resource allocation information are taken as examples for description below.

resource allocation information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) forms a frequency reuse factor of 1/3 The resource allocation information is transmitted to the terminal MS-A in a unicast manner on the distributed logical resources in the frequency set W ₁ with the highest power level in the reuse area.

The terminal MS-A learns the location of resources for receiving downlink data or the resources available for sending uplink data by successfully decoding the user-specific control information related to itself sent on the frequency set _W1 .

HARQ feedback information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) forms a frequency reuse factor of 1/3 The HARQ feedback information is transmitted to the terminal MS-A by means of code division on the distributed logical resources in the frequency set W ₁ with the highest power level in the reuse area.

The terminal MS-A learns whether it needs to retransmit the previously sent uplink data by successfully decoding the HARQ feedback information related to itself sent on the frequency set W ₁ .

power control information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) forms a frequency reuse factor of 1/3 The power control information is transmitted to the terminal MS-A by means of code division on the distributed logical resources in the frequency set W ₁ with the highest power level in the reuse area.

The terminal MS-A adjusts its own uplink transmission power by successfully decoding the power control information related to itself sent on the frequency set _W1 .

Downlink resource allocation information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) forms a frequency reuse factor of 1/3 The distributed logical resource in the frequency set W ₁ with the highest power level in the reuse area transmits the downlink resource allocation information to the terminal group MS Group-A in a multicast manner.

The terminals included in the terminal group MS Group-A learn the downlink data transmission position related to themselves by successfully decoding the user-specific control information related to themselves sent on the frequency set _W1 .

According to an embodiment of the present invention, a method for transmitting area information of a unicast service control channel is also provided. Wherein, part or all of the frequency resources in the time region for transmitting the unicast service control channel region information include multiple frequency reuse regions, and each frequency reuse region includes one or more frequency sets.

The method for transmitting Unicast Service Control Channels Region information (Unicast Service Control Channels Region) according to the embodiment of the present invention includes: the base station transmits the Unicast Service Control Channels Region information under the frequency set satisfying the preset condition in the above time region, wherein the above The preset conditions include: the downlink interference level is the smallest or the downlink coverage is the largest.

That is, in the embodiment of the present invention, the base station transmits the unicast service control channel region information at least in the frequency set with the smallest downlink interference level or the largest downlink coverage in the above time region.

In a specific implementation process, the above unicast service control channel area information includes but not limited to: non-user-specific control information and/or user-specific control information.

In a specific implementation process, the base station may transmit the area information of the unicast service control channel on part or all of the distributed logical resources of the frequency set meeting the above preset conditions. In addition, the base station may transmit the area information of the unicast service control channel in any one of broadcast, multicast, or unicast manners.

In the specific implementation process, in order to enable the terminal to analyze the unicast service control channel area information transmitted by the base station, the base station can notify the terminal of the resources used to transmit the unicast service control channel area information through its broadcast channel.

Specifically, in the method for transmitting area information of the unicast service control channel in the embodiment of the present invention, the time area may include one or more subframes.

Through the above-mentioned transmission method of the unicast service control channel area information in the embodiment of the present invention, the unicast service control channel area information can be transmitted reasonably and efficiently, and the system performance can be improved.

In order to further understand the method for transmitting the region information of the unicast service control channel provided by the embodiment of the present invention, the method for transmitting the above control information provided by the embodiment of the present invention will be described in detail below through specific embodiments.

Embodiment Three

In this embodiment, taking the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 as examples, the base station (BS-A) of cell A in FIG. 3 transmits unicast service control channel area information.

In this embodiment, the area information of the unicast service control channel is non-user-specific control information. FIG. 7 is a flow chart of this embodiment. It is assumed that the base station needs to transmit non-user-specific control information on a certain subframe of the superframe. And the frequency resources of the subframe are divided into four frequency sets as shown in Figure 3, forming two frequency reuse regions (frequency reuse factors are 1/3 and 1 respectively), wherein the frequency reuse factor is 1/3 of the frequency reuse region Contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency set. As shown in Figure 7, the transmission of non-user-specific control information by the base station mainly includes the following steps:

In step 701, the base station broadcasts non-user-specific control information on the frequency set with the smallest downlink interference level or the largest coverage in the subframe.

Step 702, the terminal uses known information to decode the non-user-specific control information, and determines the follow-up work flow by analyzing the information.

Specifically, as shown in Figure 3, for cell A, the frequency set with the smallest downlink interference level or the largest coverage in the subframe is W ₁ , and BS-A can use the standard default configuration of distributed logic in the frequency set W ₁ The above-mentioned non-user-specific control information is transmitted on the resource block, and the above-mentioned non-user-specific control information can also be transmitted on any part or all of the distributed logical resource blocks of the frequency set _W1 . In this case, BS-A is in the secondary broadcast In the channel, the terminal is notified of which distributed logical resource blocks to send non-user-specific control information; and, in addition to transmitting the above-mentioned non-user-specific control information on frequency set W ₁ , BS-A can also transmit on other frequency sets W ₁ The aforementioned non-user-specific control information. Each situation is described separately below.

Notify the terminal of the distributed logical resource blocks that transmit non-user-specific control information through the secondary broadcast channel

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and BS-A sends the frequency set ( Lowest Interference-level Frequency Partition, or Largest Coverage-Range Frequency Partition) W ₁ on the number of distributed logical resource blocks (DistributedResource Unit) required to transmit non-user-specific control information, and then the base station corresponds to the frequency set W ₁ The non-user-specific control information is transmitted to the terminal by broadcasting on the distributed logical resource block.

Wherein, the non-user-specific control information (referred to as non-user-specific control information A) includes whether to send non-user-specific control information (referred to as non-user-specific control information B ) field, when the field indicates that the non-user-specific control information B needs to be sent in the frequency reuse area with the frequency reuse factor of 1, the non-user-specific control information A may also contain the frequency reuse area describing the frequency reuse factor of 1 Information about the number of distributed logical resource blocks required to transmit the non-user-specific control information B in the frequency set W ₁₂₃ of .

The terminal obtains the number information (DRUCount) of distributed logical resource blocks (DRUCount) required for transmitting non-user-specific control information on frequency set W ₁ of _the subframe by decoding the secondary broadcast channel. The set of distributed logical resource blocks whose number is equal to the DRU Count and which starts with the number is equal to the DRU Count, to obtain the non-user-specific control information A, wherein the specific index number can be configured by standard default. The terminal learns from the non-user-specific control information A whether the non-user-specific control information B is transmitted on the frequency set W ₁₂₃ . The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

Transmission of non-user-specific control information on distributed logical resource blocks configured by standard defaults

In the frame structure shown in Fig. 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and BS-A (cell A in Fig. The distributed logical resource block set configured by standard default on the frequency set W ₁ transmits non-user-specific control information to the terminal by broadcasting. The non-user-specific control information (called non-user-specific control information A) Contains a field describing whether to send non-user-specific control information in a frequency reuse area with a frequency reuse factor of 1, when the field indicates that non-user-specific control information needs to be sent in a frequency reuse area with a frequency reuse factor of 1 (called non-user-specific control information In the case of proprietary control information B), the non-user-specific control information A may also include the distributed logical resources required to transmit the non-user-specific control information B in the frequency set W ₁₂₃ that constitutes the frequency reuse area described with a frequency reuse factor of 1 information about the number of blocks.

The terminal obtains the non-user-specific control information A by successfully decoding the resources for sending the non-user-specific control information configured by standard default on the frequency set W ₁ . The terminal learns whether the non-user-specific control information B is transmitted on the frequency set W ₁₂₃ from the non-user-specific control information. The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

The base station also transmits non-user-specific control information on other distributed logical resource blocks other than the standard default configuration of the frequency set _W1

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and BS-A uses the frequency set _W1 with the smallest downlink interference level or the largest downlink coverage. The distributed logical resource block set of the standard default configuration transmits non-user-specific control information (referred to as non-user-specific control information A) to the terminal by broadcasting _. Whether to transmit non-user-specific control information (referred to as non-user-specific control information B) field on other distributed logical resource blocks of , this field can have two forms:

One form is an indication bit, which is used to indicate whether non-user-specific control information B is also transmitted on other distributed logical resource blocks of frequency set W ₁ , and if transmission is required, the transmission of non-user-specific control information B is required Resources are available through standard default configuration;

Another form is to include information about the number of distributed logical resource blocks on the frequency set W ₁ required to transmit the non-user-specific control information B.

The terminal obtains the non-user-specific control information A by successfully decoding the resources for sending the non-user-specific control information A configured by standard on the frequency set W ₁ by default. The terminal knows from the non-user-specific control information whether non-user-specific control information B is transmitted on other distributed logical resource blocks of the frequency set, and the terminal obtains the non-user-specific control information B according to relevant instructions. The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

The base station also transmits non-user-specific control information in other multiple frequency reuse regions

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit non-user-specific control information, and BS-A uses the frequency set _W1 with the smallest downlink interference level or the largest downlink coverage. The non-user-specific control information is transmitted to the terminal by broadcasting on the distributed logical resource block set of the standard default configuration. The non-user-specific control information (called non-user-specific control information A) contains a description of whether other frequency sets The field for transmitting user-specific control information, as shown in Figure 3, this field contains 3 bits, respectively indicating whether user-specific control information will be transmitted on frequency sets W ₂ , W ₃ , and W ₁₂₃ , for example, this field is When "011", it means that user-specific control information will be transmitted on frequency sets W ₃ and W ₁₂₃ .

The terminal obtains the non-user-specific control information by successfully decoding the resources used to transmit the non-user-specific control information configured by the standard on the frequency set W ₁ by default. The terminal obtains the content required for decoding the user-specific control information by successfully decoding the non-user-specific control information.

Embodiment Four

In this embodiment, taking the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 as examples, the base station (BS-A) of cell A in FIG. 3 transmits unicast service control channel area information.

In this embodiment, the unicast service control channel area information is user-specific control information. FIG. 8 is a flow chart of this embodiment. It is assumed that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe. And the frequency resources of this subframe are divided into four frequency sets as shown in Figure 3, forming two frequency reuse regions (the frequency reuse factors are 1/3 and 1 respectively), wherein the frequency reuse factor is 1/3 The area contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency set. As shown in Figure 8, the transmission of user-specific control information by BS-A mainly includes the following steps:

Step 801, the base station sends user-specific control information on the frequency set W ₁ with the smallest downlink interference level or the largest coverage in the subframe.

In step 802, the terminal uses the known information to decode the user-specific control information related to it, and determines the subsequent work flow by analyzing the information.

In a specific implementation process, the user-specific control information includes one of the following or any combination thereof: resource allocation information, power control information, and HARQ feedback information, wherein the resource allocation information mainly includes downlink resource allocation information. A terminal can be a single terminal or a terminal group. The power control information and the resource allocation information are taken as examples for description below.

resource allocation information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) operates at the frequency with the smallest downlink interference level or the largest coverage The resource allocation information is transmitted to the terminal MS-A in a unicast manner on the distributed logical resources in the set _W1 .

The terminal MS-A learns the location of resources it receives downlink data or the resources it can use when sending uplink data by successfully decoding the user-specific control information related to itself sent on the frequency set _W1 .

HARQ feedback information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) operates at the frequency with the smallest downlink interference level or the largest coverage The distributed logical resources in the set W ₁ transmit the HARQ feedback information to the terminal MS-A in a code division manner.

The terminal MS-A learns whether it needs to retransmit the previously sent uplink data by successfully decoding the HARQ feedback information related to itself sent on the frequency set W ₁ .

power control information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and BS-A (cell A in Figure 3) operates at the frequency with the smallest downlink interference level or the largest coverage The distributed logical resources in the set W ₁ transmit the power control information to the terminal MS-A by means of code division.

The terminal MS-A adjusts its own uplink transmission power by successfully decoding the power control information related to itself sent on the frequency set _W1 .

Downlink resource allocation information

In the frame structure shown in Figure 5, the first subframe (SF0) of each frame needs to transmit user-specific control information, and the base station BS-A (cell A in Figure 3) has the smallest downlink interference level or the largest coverage The distributed logical resources in the frequency set W ₁ transmit the downlink resource allocation information to the terminal group MS Group-A in a multicast manner.

The terminals included in the terminal group MS Group-A learn the sending position of the downlink data related to them by successfully decoding the user-specific control information related to themselves sent on the frequency set W ₁ .

Example 5

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples to illustrate the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 3 .

FIG. 9 is a flow chart of this embodiment. It is assumed that BS-A needs to transmit non-user-specific control information on a subframe of a superframe, and the frequency resource of the subframe is divided into four frequency sets as shown in FIG. 3 . Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 9, BS-A transmission of user-specific control information mainly includes the following steps:

Step 901, the base station sends indication information in the superframe header (primary superframe header or secondary superframe header), which is used to indicate whether the non-user-specific control information is to be sent in the frequency reuse area with a frequency reuse factor of 1 or in the frequency reuse factor 1/3 of the frequency reuse area is transmitted.

Step 902, the terminal uses the superframe header to obtain the frequency reuse area used by the base station to send non-user-specific control information.

Specifically, when the indication information in the superframe header (as shown in Table 1) indicates that the base station transmits non-user-specific control information in the frequency reuse area whose frequency reuse area is 1/3, it can be understood that the base station BS-A The non-user-specific control information is sent on the frequency set W1 with the highest power level in the frequency reuse area.

Further, the base station BS-A uses all or part of the distributed logic units on the frequency set W1 to send non-user-specific control information.

Further, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Table 1 Superframe header format

grammar note { ... If (the number of physical resource units contained in the four frequency sets is not 0){ Instructions 1: Indicates that non-user-specific control information is sent on a frequency reuse area with a frequency reuse factor of 1 0: Indicates that non-user-specific control information is sent on a frequency reuse area with a frequency set of 1/3

} ... }

Example 6

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples to illustrate the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 3 .

FIG. 10 is a flow chart of this embodiment. It is assumed that BS-A needs to transmit non-user-specific control information on a subframe of a superframe, and the frequency resource of the subframe is divided into four frequency sets as shown in FIG. 3 . Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 10, BS-A transmission of user-specific control information mainly includes the following steps:

In step 1001, the base station sends indication information in a superframe header (primary superframe header or secondary superframe header), which is used to indicate a set of frequencies for sending non-user-specific control information.

Step 1002, the terminal uses the superframe header to obtain the frequency set used by the base station to send non-user-specific control information.

Specifically, the base station BS-A uses all or part of the distributed logic units on the corresponding frequency set to send non-user-specific control information.

Further, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

Specifically, the format of the superframe header is shown in Table 2.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Table 2 Superframe header format

grammar Notes { ... If (the number of physical resource units contained in the four frequency sets is not 0) { Instructions 00: Instruct non-user-specific control information to be sent on frequency set w1 01: Indicate non-user-specific control information to be sent on frequency set w2 10: Indicate non-user-specific control information to be sent on frequency set w3

11: Indicates that non-user-specific control information is sent on frequency set w123 } ... }

Example 7

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples to illustrate the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 3 .

Figure 11 is a flow chart of this embodiment, assuming that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe, and the frequency resources of this subframe are divided into four frequency sets as shown in Figure 3, Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 11, BS-A transmits user-specific control information mainly includes the following steps:

Step 1101, the base station sends indication information in the superframe header (primary superframe header or auxiliary superframe header), which is used to indicate whether the non-user-specific control information is sent on the frequency set constituting the frequency reuse area with a frequency reuse factor of 1 or Transmit on the set of frequencies with the highest power level constituting a frequency reuse area with a frequency reuse factor of 1/3.

Step 1102, the terminal uses the superframe header to obtain the frequency set used by the base station to send non-user-specific control information.

Specifically, the base station BS-A uses all or part of the distributed logic units on the corresponding frequency set to send non-user-specific control information.

Further, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

Specifically, the format of the superframe header is shown in Table 3.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Table 3 Superframe header format

grammar note { ... If (the number of physical resource units contained in the four frequency sets is not 0) { Instructions 1: Indicates that non-user-proprietary control information is

Send 0 on a frequency set with a frequency reuse factor of 1: Indicates that non-user-specific control information is sent on the frequency set with the highest power level constituting a frequency reuse area with a frequency reuse factor of 1/3 } ... }

Example 8

In this embodiment, taking the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 12 as examples, the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 12 is described.

Fig. 13 is a flow chart of this embodiment, assuming that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe, and the frequency resource of the subframe is divided into three frequency sets as shown in Fig. 12 , Form a frequency reuse area (its frequency reuse factor is 1/3), as shown in Figure 13, BS-A transmission user-specific control information mainly includes the following steps:

Step 1301, the base station sends non-user-specific control information on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3.

Step 1302, the terminal decodes non-user-specific control information.

Specifically, the base station BS-A uses all or part of the distributed logic units on the corresponding frequency set to send non-user-specific control information.

Further, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Example 9

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples to illustrate the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 3 .

Figure 14 is a flow chart of this embodiment, assuming that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe, and the frequency resources of this subframe are divided into four frequency sets as shown in Figure 3, Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 14, BS-A transmits user-specific control information mainly includes the following steps:

Step 1401, the base station sends indication information and encoding parameter information in the superframe header (primary superframe header or auxiliary superframe header), the indication information is used to indicate that the non-user-specific control information constitutes a frequency with a frequency reuse factor of 1 Whether to send on the frequency set of the reuse area or to send on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3, the encoding parameter information is used to describe the encoding method of the non-user-specific control information.

Step 1402, the terminal uses the superframe header to obtain information related to decoding non-user-specific control information.

Specifically, the encoding parameter information includes but is not limited to at least one of the following: modulation and encoding scheme (QPSK), number of repetitions, encoding rate, multi-antenna encoding/precoding parameters, and number of occupied resources.

Specifically, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

Specifically, the format of the superframe header is shown in Table 4(a) and Table 4(b).

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Table 4(a) Superframe header format

grammar Notes {

... Instructions 1: Indicates that the non-user-specific control information is sent on the frequency set with a frequency reuse factor of 1 0: Indicates that the non-user-specific control information is sent on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3 send on Encoding parameters It is used to describe the encoding method of the non-user-specific control information, and the encoding parameter information can be the same or different when sending non-user-specific control information on different frequency sets ... }

Table 4(b) Superframe header format

grammar Notes { ... If (the number of physical resource units contained in the four frequency sets is not 0){

Instructions 1: Indicates that the non-user-specific control information is sent on the frequency set with a frequency reuse factor of 1 0: Indicates that the non-user-specific control information is sent on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3 send on Encoding parameters It is used to describe the encoding method of the non-user-specific control information. The encoding parameter information can be the same or different when sending non-user-specific control information on different frequency sets } ... }

Example 10

In this embodiment, taking the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 12 as examples, the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 12 is described.

Figure 15 is a flow chart of this embodiment, assuming that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe, and the frequency resources of this subframe are divided into three frequency sets as shown in Figure 12, Form a frequency reuse area (its frequency reuse factor is 1/3), as shown in Figure 13, BS-A transmission user-specific control information mainly includes the following steps:

Step 1501, the base station sends non-user-specific control information on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3, and the encoding method of the non-user-specific control information is indicated by the superframe header.

Step 1502, the terminal decodes non-user-specific control information.

Specifically, the encoding parameter information includes but is not limited to at least one of the following: modulation and encoding scheme (QPSK), number of repetitions, encoding rate, multi-antenna encoding/precoding parameters, and number of occupied resources.

Specifically, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Specifically, the format of the superframe header is shown in Table 5.

Table 5 Superframe header format

grammar Notes

{ ... Encoding parameters It is used to describe the encoding method of the non-user-specific control information. When the non-user-specific control information is sent on different frequency sets, the encoding parameter information can be the same or different ... }

Example 11

In this embodiment, the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 3 are taken as examples to illustrate the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 3 .

Fig. 16 is a flow chart of this embodiment, assuming that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe, and the frequency resources of this subframe are divided into four frequency sets as shown in Fig. 3 , Form two frequency reuse areas (the frequency reuse factors of which are 1/3 and 1 respectively), wherein the frequency reuse area with a frequency reuse factor of 1/3 contains three frequency sets, and the frequency reuse area with a frequency reuse factor of 1 contains one frequency Set, as shown in Figure 14, BS-A transmits user-specific control information mainly includes the following steps:

Step 1601, the base station sends indication information in the superframe header (primary superframe header or auxiliary superframe header), and the indication information is used to indicate the frequency of non-user-specific control information in the frequency reuse area that constitutes a frequency reuse factor of 1. The transmission on the set is still transmitted on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3.

Step 1602, the terminal uses the superframe header to obtain information related to decoding non-user-specific control information.

Specifically, when the non-user-specific control information is sent on the frequency set of the frequency reuse area with the frequency reuse factor of 1 and the frequency set with the highest power level constituting the frequency reuse area with the frequency reuse factor of 1/3 is used. The encoding parameters are configured by standard default and can be the same or different.

Specifically, the encoding parameter information includes but is not limited to at least one of the following: modulation and encoding scheme (QPSK), number of repetitions, encoding rate, multi-antenna encoding/precoding parameters, and number of occupied resources.

Specifically, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

Specifically, the format of the superframe header is shown in Table 1, or Table 2, or Table 3.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

Example 12

In this embodiment, taking the frame structure shown in FIG. 2 and the frequency resource allocation method shown in FIG. 12 as examples, the transmission of non-user-specific control information by the base station (BS-A) of cell A in FIG. 12 is described.

Figure 17 is a flow chart of this embodiment, assuming that BS-A needs to transmit non-user-specific control information on a certain subframe of a superframe, and the frequency resources of this subframe are divided into three frequency sets as shown in Figure 12, Form a frequency reuse area (its frequency reuse factor is 1/3), as shown in Figure 13, BS-A transmission user-specific control information mainly includes the following steps:

Step 1701, the base station sends non-user-specific control information on the frequency set with the highest power level constituting the frequency reuse area with a frequency reuse factor of 1/3, and the coding mode of the non-user-specific control information is configured by standard default.

Step 1702, the terminal decodes non-user-specific control information.

Specifically, the encoding parameter information includes but is not limited to at least one of the following: modulation and encoding scheme (QPSK), number of repetitions, encoding rate, multi-antenna encoding/precoding parameters, and number of occupied resources.

Specifically, the non-user-specific control information indicates whether to send user-specific control information on other frequency sets.

Further, the user-specific control information includes but is not limited to at least one of the following: resource allocation information (Assignment A-MAP), power control information, hybrid automatic repeat request feedback information, group allocation information, and permanent resource allocation information.

It should be pointed out that the non-user-specific control information is taken as an example in the above embodiment, and this scenario is also applicable to the scenario of transmitting user-specific control information, or transmitting non-user-specific control information and user-specific control information.

The above-mentioned embodiments are also applicable to the case that a certain subframe includes only one frequency set, which will not be repeated here.

As mentioned above, with the help of the technical solutions provided by the embodiments of the present invention, control information is transmitted to users at a reasonable position to improve frequency resource usage efficiency and improve the performance of the entire wireless communication system.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. the transmission method of a control information, wherein, the all or part of frequency resource of the time zone of control information transmission comprises: a plurality of frequency reuses region, wherein, the frequency re-use factor in each frequency reuse region in described a plurality of frequency reuses region is different, and each frequency reuse region comprises one or more frequency sets, it is characterized in that, described method comprises:

Described control information is transmitted in base station on the frequency reuse region of the frequency re-use factor minimum of described time zone,

Wherein, described frequency re-use factor is to be less than or equal to 1 positive number;

Wherein, in the frequency reuse region of described frequency re-use factor minimum, transmitting described control information comprises: in the frequency reuse region of described frequency re-use factor minimum, in the highest-ranking frequency sets of power, transmit described control information.

2. method according to claim 1, is characterized in that, transmits described control information comprise in the frequency reuse region of described frequency re-use factor minimum:

In control information described in the part or all of distributed logic transmitted over resources in the frequency reuse region of described frequency re-use factor minimum.

3.. method according to claim 1, is characterized in that, transmits described control information and comprise in the highest-ranking frequency sets of described power:

In control information described in the part or all of distributed logic transmitted over resources of the highest-ranking frequency sets of described power.

4. method according to claim 1, it is characterized in that, described control information is non-user proprietary control information, comprising: the sign of whether transmitting non-user proprietary control information and/or user proprietary control information in indication other frequency sets except the highest-ranking frequency sets of described power.

5. method according to claim 1, is characterized in that, described control information comprises: non-user proprietary control information or user proprietary control information.

6. method according to claim 5, is characterized in that, described non-user proprietary control information comprises: the information of the resource that indication transmission user proprietary control information is used.

7. method according to claim 6, it is characterized in that, described non-user proprietary control information also comprises: be used to indicate except the sign of whether transmitting non-user proprietary control information and/or user proprietary control information on extra-regional other frequency reuse region of frequency reuse of described frequency re-use factor minimum.

8. method according to claim 7, is characterized in that, described method also comprises:

The resource that described non-user proprietary control information adopts is transmitted by broadcast channel notification terminal in described base station.

9. method according to claim 5, is characterized in that, described user proprietary control information comprise following one of at least: resource allocation information, power control information, hybrid automatic repeat request feedback information.

10. method according to claim 1, is characterized in that, described base station is transmitted described control information in the following manner: broadcast, multicast or clean culture.

11. according to the method described in any one in claim 1 to 10, it is characterized in that, described time zone comprises one or more subframes.

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