CN102752803A - Control information and service information transmission method - Google Patents
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Abstract
本发明公开了一种控制信息和业务信息的传输方法，发送端根据当前子帧传输的下行数据类型在当前子帧中配置下行信道指示信息并发送至终端，配置的下行信道指示信息用于表示当前子帧传输的下行数据类型为控制信息或业务信息，终端按照当前子帧的下行信道指示信息所表示的数据类型的接收过程接收当前子帧传输的下行数据。采用本发明公开的方法能够提高无线资源的利用效率。
The invention discloses a method for transmitting control information and service information. The sending end configures downlink channel indication information in the current subframe according to the type of downlink data transmitted in the current subframe and sends it to the terminal. The configured downlink channel indication information is used to indicate The type of downlink data transmitted in the current subframe is control information or service information, and the terminal receives the downlink data transmitted in the current subframe according to the receiving process of the data type indicated by the downlink channel indication information of the current subframe. Using the method disclosed by the invention can improve the utilization efficiency of wireless resources.
Description
技术领域 technical field
本发明涉及无线通讯领域，特别涉及一种控制信息和业务信息的传输方法。The invention relates to the field of wireless communication, in particular to a method for transmitting control information and service information.
背景技术 Background technique
随着社会的发展，人们对无线通信的要求也越来越高，传输的信息量越来越多，无线资源越来越紧张。如何有效地利用无线资源来提高无线通信的质量成为目前技术人员关心的一个课题。With the development of society, people's requirements for wireless communication are getting higher and higher, the amount of transmitted information is increasing, and wireless resources are becoming more and more tense. How to effectively use wireless resources to improve the quality of wireless communication has become a topic of concern to technical personnel.
在LTE系统中，为了有效地利用无线资源，下行控制信息和业务信息的传输采用时分复用方法，每一子帧中的前几个时隙用于传输控制信息，后面几个时隙用于传输业务信息。In the LTE system, in order to effectively utilize wireless resources, the transmission of downlink control information and service information adopts a time division multiplexing method. The first few time slots in each subframe are used to transmit control information, and the next few time slots are used for Transfer business information.
为了对现有技术中的控制信息和业务信息的传输方法进行清楚地说明，下面可通过一个例子举例说明。需要说明的是，下述例子仅用于对控制信息和业务信息的传输原理说明，并非表示实际应用中的真实场景，例如，下述例子中所涉及的终端数量和载波数量均少于实际数量。In order to clearly illustrate the transmission method of control information and service information in the prior art, an example may be used as an example below. It should be noted that the following examples are only used to illustrate the transmission principles of control information and service information, and do not represent real scenarios in actual applications. For example, the number of terminals and carriers involved in the following examples are less than the actual number .
图1为现有技术中控制信息和业务信息的传输方法的示意图，如图1所示，假设系统共提供两个用于数据传输的载波：f1和f2，为终端1分配载波f1，为终端2分配载波f2。假设一个子帧共包括32个时隙，则可将32个时隙中的前8个时隙配置为用于传输控制信息，可将一个子帧中的剩余24个时隙配置为用于传输业务信息。Figure 1 is a schematic diagram of the transmission method of control information and service information in the prior art. As shown in Figure 1, it is assumed that the system provides two carriers for data transmission: f1 and f2, and carrier f1 is allocated to terminal 1, and carrier f1 is allocated to terminal 1. 2 Assign carrier f2. Assuming that a subframe includes a total of 32 time slots, the first 8 time slots in the 32 time slots can be configured for transmission of control information, and the remaining 24 time slots in a subframe can be configured for transmission business information.
从图1可以看出，无论对于载波f1还是f2，发送端(基站)在第一子帧T1前8个时隙发送控制信息，在第一子帧T1的剩余24个时隙发送业务信息，相同地，在第二子帧T2前8个时隙发送控制信息，在第二子帧T2的剩余24个时隙发送业务信息，在第三子帧T3前8个时隙发送控制信息，在第三子帧T3的剩余24个时隙发送业务信息。相应地，无论对于终端1和终端2，在每一子帧的前8个时隙按照控制信息的接收过程接收控制信息，在每一子帧的剩余24个时隙按照业务信息的接收过程接收业务信息。It can be seen from FIG. 1 that no matter for carrier f1 or f2, the transmitting end (base station) sends control information in the first 8 time slots of the first subframe T1, and sends service information in the remaining 24 time slots of the first subframe T1. Similarly, control information is sent in the first 8 time slots of the second subframe T2, service information is sent in the remaining 24 time slots of the second subframe T2, and control information is sent in the first 8 time slots of the third subframe T3. Service information is sent in the remaining 24 time slots of the third subframe T3. Correspondingly, for terminal 1 and terminal 2, the control information is received in the first 8 slots of each subframe according to the receiving process of control information, and the remaining 24 slots of each subframe are received according to the receiving process of service information business information.
上述例子仅为举例说明，在实际应用中，每一子帧还可能传输其他信息，由于其他信息的传输和本发明无关，故不再一一详细介绍。The above example is only for illustration. In practical applications, each subframe may also transmit other information. Since the transmission of other information has nothing to do with the present invention, it will not be described in detail one by one.
可见，根据现有技术中的控制信息和业务信息的传输方法，在每一子帧中，都为控制信息和业务信息的传输分别配置了相应的时隙，这种传输方法适应于控制信息比较多的系统，然而，在实际应用中，在某些系统中可能控制信息并不多，这就意味着，在某些子帧并不需要传输控制信息，如果仍然在每一子帧中都为控制信息和业务信息的传输分别配置相应的时隙，则会导致在某些子帧中为控制信息配置的时隙其实是闲置的，造成了无线资源的浪费。It can be seen that according to the transmission method of control information and service information in the prior art, corresponding time slots are respectively configured for the transmission of control information and service information in each subframe, and this transmission method is suitable for comparison of control information However, in practical applications, there may not be much control information in some systems, which means that there is no need to transmit control information in some subframes, if still in each subframe for Corresponding time slots are respectively configured for the transmission of control information and service information, and the time slots configured for control information in some subframes are actually idle, resulting in a waste of radio resources.
发明内容 Contents of the invention
有鉴于此，本发明提供一种控制信息和业务信息的传输方法，能够提高无线资源的利用效率。In view of this, the present invention provides a method for transmitting control information and service information, which can improve the utilization efficiency of wireless resources.
为实现上述发明目的，本发明的技术方案是这样实现的：For realizing above-mentioned purpose of the invention, technical scheme of the present invention is realized like this:
一种控制信息和业务信息的传输方法，预先在发送端和终端配置下行信道指示信息与下行数据类型之间的一一对应关系，所述下行数据类型包括：控制信息和业务信息，该方法还包括：A method for transmitting control information and service information, in which a one-to-one correspondence between downlink channel indication information and downlink data types is pre-configured at a sending end and a terminal, and the downlink data types include: control information and service information, and the method also includes: include:
发送端根据当前子帧欲传输的下行数据类型和所述对应关系，在当前子帧中配置下行信道指示信息，并将所述下行信道指示信息发送至终端，所述当前子帧中配置的下行信道指示信息用于表示当前子帧欲传输的下行数据类型；The sending end configures downlink channel indication information in the current subframe according to the type of downlink data to be transmitted in the current subframe and the corresponding relationship, and sends the downlink channel indication information to the terminal, and the downlink channel indication information configured in the current subframe The channel indication information is used to indicate the type of downlink data to be transmitted in the current subframe;
终端根据所述当前子帧的下行信道指示信息和所述对应关系，按照当前子帧的下行信道指示信息所表示的数据类型的接收过程接收当前子帧传输的下行数据。The terminal receives the downlink data transmitted in the current subframe according to the receiving process of the data type indicated by the downlink channel indication information of the current subframe according to the downlink channel indication information of the current subframe and the corresponding relationship.
发送端将当前子帧中配置的下行信道指示信息发送至终端之前，该方法进一步包括：发送端对下行信道指示信息进行编码、加扰、调制和资源映射。Before the sending end sends the downlink channel indication information configured in the current subframe to the terminal, the method further includes: the sending end performs encoding, scrambling, modulation and resource mapping on the downlink channel indication information.
发送端将当前子帧中配置的下行信道指示信息发送至终端之后，该方法进一步包括：终端对接收到的信息进行解资源映射、解调、解扰和解码，得到下行信道指示信息。After the transmitting end sends the downlink channel indication information configured in the current subframe to the terminal, the method further includes: the terminal performs resource mapping, demodulation, descrambling and decoding on the received information to obtain the downlink channel indication information.
所述下行信道指示信息与下行数据类型之间的一一对应关系为：The one-to-one correspondence between the downlink channel indication information and the downlink data type is:
下行信道指示信息0和业务信息对应，下行信道指示信息1和控制信息对应；或，Downlink channel indication information 0 corresponds to service information, and downlink channel indication information 1 corresponds to control information; or,
下行信道指示信息1和业务信息对应，下行信道指示信息0和控制信息对应。The downlink channel indication information 1 corresponds to service information, and the downlink channel indication information 0 corresponds to control information.
所述下行信道指示信息与下行数据类型之间的一一对应关系为：The one-to-one correspondence between the downlink channel indication information and the downlink data type is:
下行信道指示信息00和业务信息对应，下行信道指示信息01和控制信息对应；或，The downlink channel indication information 00 corresponds to the service information, and the downlink channel indication information 01 corresponds to the control information; or,
下行信道指示信息01和业务信息对应，下行信道指示信息00和控制信息对应。The downlink channel indication information 01 corresponds to service information, and the downlink channel indication information 00 corresponds to control information.
根据本发明所提供的技术方案，发送端根据当前子帧传输的下行数据类型在当前子帧中配置下行信道指示信息并发送至终端，配置的下行信道指示信息用于表示当前子帧传输的下行数据类型为控制信息或业务信息，终端按照当前子帧的下行信道指示信息所表示的数据类型的接收过程接收当前子帧传输的下行数据。可见，本发明通过在每个子帧配置下行信道指示信息，从而告知终端每一个子帧中可能传输业务信息也可能传输控制信息，不同于现有技术中在每一子帧的前几个时隙传输控制信息、后面几个时隙传输业务信息，因此，对于控制信息比较少的系统，避免了某些子帧中为控制信息配置的时隙是闲置的情况发生，提高了无线资源的利用效率。According to the technical solution provided by the present invention, the sending end configures downlink channel indication information in the current subframe according to the type of downlink data transmitted in the current subframe and sends it to the terminal, and the configured downlink channel indication information is used to indicate the downlink channel indication information transmitted in the current subframe The data type is control information or service information, and the terminal receives the downlink data transmitted in the current subframe according to the receiving process of the data type indicated by the downlink channel indication information of the current subframe. It can be seen that the present invention configures downlink channel indication information in each subframe to inform the terminal that service information and control information may be transmitted in each subframe, which is different from the prior art in the first few time slots of each subframe Transmission of control information and transmission of service information in the next few time slots. Therefore, for systems with less control information, the situation that the time slots configured for control information in some subframes are idle is avoided, and the utilization efficiency of wireless resources is improved. .
附图说明 Description of drawings
图1为现有技术中控制信息和业务信息的传输方法的示意图。Fig. 1 is a schematic diagram of a method for transmitting control information and service information in the prior art.
图2为本发明所提供的一种控制信息和业务信息的传输方法的实施例的流程图。Fig. 2 is a flowchart of an embodiment of a method for transmitting control information and service information provided by the present invention.
图3为本发明所提供的控制信息和业务信息的传输方法的实施例的示意图。Fig. 3 is a schematic diagram of an embodiment of a method for transmitting control information and service information provided by the present invention.
具体实施方式 Detailed ways
为使本发明的目的、技术方案及优点更加清楚明白，以下参照附图并举实施例，对本发明所述方案作进一步地详细说明。In order to make the object, technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below with reference to the accompanying drawings and examples.
图2为本发明所提供的一种控制信息和业务信息的传输方法的实施例的流程图。如图2所示，该方法包括以下步骤：Fig. 2 is a flowchart of an embodiment of a method for transmitting control information and service information provided by the present invention. As shown in Figure 2, the method includes the following steps:
步骤101，预先在发送端和终端配置下行信道指示信息与下行数据类型之间的一一对应关系，所述下行数据类型包括：控制信息和业务信息。Step 101, pre-configure a one-to-one correspondence between downlink channel indication information and downlink data types at the sending end and the terminal, where the downlink data types include: control information and service information.
本步骤中所述对应关系用于表示每一下行信道指示信息分别与每一种下行数据类型的对应关系，由于在本发明中所涉及的数据类型为业务信息或控制信息，则只需设置两种下行信道指示信息即可。The corresponding relationship described in this step is used to represent the corresponding relationship between each downlink channel indication information and each downlink data type. Since the data type involved in the present invention is service information or control information, only two It is sufficient to plant downlink channel indication information.
如果下行信道指示信息用1比特来表示，可采用0表示业务信息，1表示控制信息。预先在发送端和终端中配置相同的对应关系(0和业务信息对应，1和控制信息对应)，相当于发送端和终端均约定了相同的下行信道指示信息，且相同的下行信道指示信息表示相同的下行数据类型。If the downlink channel indication information is represented by 1 bit, 0 may be used to represent service information, and 1 may be used to represent control information. Configure the same correspondence in the sender and the terminal in advance (0 corresponds to service information, 1 corresponds to control information), which means that both the sender and the terminal agree on the same downlink channel indication information, and the same downlink channel indication information indicates The same downstream data type.
当然，上述下行信道指示信息的具体设置规定没有限定，只要能够区分两种不同的下行数据类型即可，例如，如果下行信道指示信息用2比特来表示，可采用00表示业务信息，01表示控制信息，也可采用01表示业务信息，00表示控制信息。Of course, there is no limit to the specific setting of the above-mentioned downlink channel indication information, as long as two different downlink data types can be distinguished. For example, if the downlink channel indication information is represented by 2 bits, 00 can be used to indicate service information, and 01 can be used to indicate control Information, 01 can also be used to indicate business information, and 00 can be used to indicate control information.
步骤102，发送端根据当前子帧欲传输的下行数据类型和所述对应关系，在当前子帧中配置下行信道指示信息，并将所述下行信道指示信息发送至终端，所述当前子帧中配置的下行信道指示信息用于表示当前子帧欲传输的下行数据类型。
在本步骤中，如果当前子帧传输的下行数据类型为业务信息，则发送端可在当前子帧中配置下行信道指示信息为0，表示当前子帧传输的下行数据类型为业务信息，类似地，如果当前子帧传输的下行数据类型为控制信息，则发送端可在当前子帧中配置下行信道指示信息为1，表示当前子帧传输的下行数据类型为控制信息。In this step, if the type of downlink data transmitted in the current subframe is service information, the sender can configure the downlink channel indication information in the current subframe as 0, indicating that the type of downlink data transmitted in the current subframe is service information, similarly , if the type of downlink data transmitted in the current subframe is control information, the sender can configure the downlink channel indication information in the current subframe as 1, indicating that the type of downlink data transmitted in the current subframe is control information.
图3为本发明所提供的控制信息和业务信息的传输方法的实施例的示意图，如图3所示，假设系统共提供两个载波：f1和f2进行数据传输，终端1采用载波f1接收数据，终端2采用载波f2接收数据。Fig. 3 is a schematic diagram of an embodiment of the transmission method of control information and service information provided by the present invention. As shown in Fig. 3, it is assumed that the system provides a total of two carriers: f1 and f2 for data transmission, and terminal 1 uses carrier f1 to receive data , terminal 2 receives data using carrier f2.
如图3所示，对于载波f1，假设一个子帧共包括32个时隙，发送端(基站)在第一子帧T1的前1个时隙发送下行信道指示信息1，在第一子帧T1的剩余31个时隙发送控制信息，如果后续无需再发送控制信息，则在第二子帧T2的前1个时隙发送下行信道指示信息0，在第二子帧T1的剩余31个时隙发送业务信息，相同地，在第三子帧T3的前1个时隙发送下行信道指示信息0，在第三子帧T3的剩余31个时隙发送业务信息。As shown in Figure 3, for the carrier f1, assuming that a subframe includes 32 time slots, the transmitting end (base station) sends downlink channel indication information 1 in the first time slot of the first subframe T1, and in the first subframe T1 The remaining 31 time slots of T1 send control information. If there is no need to send control information in the future, the downlink channel indication information 0 is sent in the first time slot of the second subframe T2, and the remaining 31 time slots of the second subframe T1 Similarly, the downlink channel indication information 0 is sent in the first time slot of the third subframe T3, and the service information is sent in the remaining 31 time slots of the third subframe T3.
对于载波f2，假设在第一子帧T1之前已将控制信息发送完毕，则发送端(基站)在第一子帧T1的前1个时隙发送下行信道指示信息0，在第一子帧T1的剩余31个时隙发送业务信息，相同地，在第二子帧T2的前1个时隙发送下行信道指示信息0，在第二子帧T1的剩余31个时隙发送业务信息，在第三子帧T3的前1个时隙发送下行信道指示信息0，在第三子帧T3的剩余31个时隙发送业务信息。For carrier f2, assuming that the control information has been sent before the first subframe T1, the transmitting end (base station) sends downlink channel indication information 0 in the first time slot of the first subframe T1, and in the first subframe T1 Send service information in the remaining 31 time slots of the second subframe T2. Similarly, send downlink channel indication information 0 in the first time slot of the second subframe T2, and send service information in the remaining 31 time slots of the second subframe T1. The downlink channel indication information 0 is sent in the first time slot of the third subframe T3, and the service information is sent in the remaining 31 time slots of the third subframe T3.
步骤103，终端根据所述当前子帧的下行信道指示信息和所述对应关系，按照当前子帧的下行信道指示信息所表示的数据类型的接收过程接收当前子帧传输的下行数据。
在本步骤中，如果终端接收到的当前子帧中的下行信道指示信息为0，再根据对应关系得知当前子帧传输的下行数据类型为业务信息，则按照业务信息的接收过程接收当前子帧传输的下行数据，类似地，如果终端接收到的当前子帧中的下行信道指示信息为1，再根据对应关系得知当前子帧传输的下行数据类型为控制信息，则按照控制信息的接收过程接收当前子帧传输的下行数据。In this step, if the downlink channel indication information received by the terminal in the current subframe is 0, and then it is known that the downlink data type transmitted in the current subframe is service information according to the corresponding relationship, then the current subframe is received according to the receiving process of the service information. For the downlink data transmitted by the frame, similarly, if the downlink channel indication information received by the terminal in the current subframe is 1, and then according to the corresponding relationship, it is known that the type of downlink data transmitted in the current subframe is control information, then according to the reception of the control information The process receives the downlink data transmitted in the current subframe.
所述业务信息的接收过程与控制信息的接收过程与现有技术的内容是相同的，此处不再赘述。The receiving process of the service information and the receiving process of the control information are the same as those in the prior art, and will not be repeated here.
对于终端1，接收到的第一子帧T1的前1个时隙发送下行信道指示信息1，则在第一子帧T1的剩余31个时隙按照控制信息的接收过程接收控制信息，对于第二子帧T2和第三子帧T3是相同的，接收到前1个时隙发送下行信道指示信息0，则在剩余31个时隙按照业务信息的接收过程接收业务信息。For terminal 1, the received downlink channel indication information 1 is sent in the first time slot of the first subframe T1, and the control information is received in the remaining 31 time slots of the first subframe T1 according to the receiving process of control information. The second subframe T2 and the third subframe T3 are the same, if the downlink channel indication information 0 is sent in the first time slot, then the service information is received in the remaining 31 time slots according to the service information receiving process.
对于终端2，第一子帧T1、第二子帧T2和第三子帧T3是相同的，接收到前1个时隙发送下行信道指示信息0，则在剩余31个时隙按照业务信息的接收过程接收业务信息。For terminal 2, the first subframe T1, the second subframe T2, and the third subframe T3 are the same, and after receiving the downlink channel indication information 0 sent in the first time slot, then in the remaining 31 time slots according to the service information The receiving process receives business information.
另外，在上述步骤102，还可进一步包括：发送端将当前子帧中配置的下行信道指示信息发送至终端之前，对下行信道指示信息进行编码、加扰、调制和资源映射。In addition, in the
相应地，在上述步骤103，还可进一步包括：终端进行解资源映射、解调、解扰和解码，得到下行信道指示信息。Correspondingly, in the
上述发送端发送下行信道指示之前的处理方法以及终端的处理方法为现有技术的内容，可参考现有技术中的相应方法，此处不予赘述。The above-mentioned processing method before the sending end sends the downlink channel indication and the processing method of the terminal are the content of the prior art, and reference may be made to the corresponding method in the prior art, which will not be repeated here.
通过上述步骤102～步骤103的介绍，可以看出，本发明通过在每个子帧配置下行信道指示信息，从而告知终端每一个子帧中可能传输业务信息也可能传输控制信息，不同于现有技术中在每一子帧的前几个时隙传输控制信息、后面几个时隙传输业务信息，因此，对于控制信息比较少的系统，避免了某些子帧中为控制信息配置的时隙是闲置的情况发生。Through the introduction of the
还需要说明的是，在每个子帧中，发送端发送完毕下行信道指示信息后，发送业务信息或控制信息的方法与现有技术是相同的，接收端接收完毕下行信道指示信息后，接收业务信息或控制信息的方法与现有技术是相同的。It should also be noted that, in each subframe, after the sending end sends the downlink channel indication information, the method of sending service information or control information is the same as that of the prior art, and the receiving end receives the service information after receiving the downlink channel indication information. The method of information or control information is the same as the prior art.
至此，本流程结束。So far, this process ends.
在实际应用中，每一子帧还可能传输其他信息，例如确认(ACK)/非确认(NACK)信息，由于本发明仅涉及控制信息和业务信息的传输，其他信息的传输不在本发明的讨论范畴内，故不再一一详细介绍。In practical applications, each subframe may also transmit other information, such as acknowledgment (ACK)/non-acknowledgement (NACK) information. Since the present invention only involves the transmission of control information and service information, the transmission of other information is not discussed in the present invention Within the scope, it will not be introduced in detail one by one.
综上，在本发明中，发送端根据当前子帧传输的下行数据类型在当前子帧中配置下行信道指示信息并发送至终端，配置的下行信道指示信息用于表示当前子帧传输的下行数据类型为控制信息或业务信息，终端按照当前子帧的下行信道指示信息所表示的数据类型的接收过程接收当前子帧传输的下行数据。可见，本发明通过在每个子帧配置下行信道指示信息，从而告知终端每一个子帧中可能传输业务信息也可能传输控制信息，不同于现有技术中在每一子帧的前几个时隙传输控制信息、后面几个时隙传输业务信息，因此，对于控制信息比较少的系统，避免了某些子帧中为控制信息配置的时隙是闲置的情况发生，提高了无线资源的利用效率。To sum up, in the present invention, the sending end configures downlink channel indication information in the current subframe according to the type of downlink data transmitted in the current subframe and sends it to the terminal. The configured downlink channel indication information is used to indicate the downlink data transmitted in the current subframe The type is control information or service information, and the terminal receives the downlink data transmitted in the current subframe according to the receiving process of the data type indicated by the downlink channel indication information of the current subframe. It can be seen that the present invention configures downlink channel indication information in each subframe to inform the terminal that service information and control information may be transmitted in each subframe, which is different from the prior art in the first few time slots of each subframe The control information is transmitted, and the business information is transmitted in the next few time slots. Therefore, for a system with less control information, the situation that the time slots configured for control information in some subframes are idle is avoided, and the utilization efficiency of wireless resources is improved. .
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. 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.
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