CN103427970A - Method, user equipment and base station for transmitting downlink control information - Google Patents

Abstract

Embodiments of the present invention provide a method for transmitting downlink control information, user equipment and a base station. The method includes: receiving common downlink control information DCI from the base station, where the common DCI is used to indicate the resource occupied by the first common message for the first type of user equipment UE and the resource occupied by the first common message for the second type of UE in the physical downlink shared channel PDSCH resource Resources occupied by the second public message; according to the common DCI, detecting the first public message in the resources occupied by the first public message or detecting the second public message in the resources occupied by the second public message. In the embodiment of the present invention, since the common DCI indicates two common messages for two types of UEs, when the base station transmits the two common messages indicated by the common DCI, the two types of UEs can respectively detect their respective common messages according to the common DCI , so that the transmission efficiency of public messages can be improved.

Description

Method for transmitting downlink control information, user equipment and base station

technical field

The present invention relates to the communication field, and in particular, relates to a method for transmitting downlink control information, a user equipment and a base station.

Background technique

Resource allocation in the Long Term Evolution (LTE) system is uniformly scheduled by the evolved NodeB (eNB). If the base station has downlink data to send to the user equipment (User Equipment, UE), it needs to map the downlink data symbols to time-frequency resources within a transmission time interval (Transmission TimeInterval, TTI), and send the downlink data in the current subframe Control information (Downlink Control Information, DCI), used to indicate the location of downlink data on time-frequency resources and scheduling information such as data modulation and coding methods. The dedicated downlink data that only one UE needs to receive and detect in one TTI is indicated by the dedicated DCI. Common downlink data received and detected by multiple UEs within one TTI is indicated by common DCI. Common downlink data can also be called common messages, which can include paging messages, system information (SystemInformation, SI) or random access response messages (Random Access Response, RAR), etc.

Since multiple UEs have different receiving capabilities, in order to ensure that UEs with different receiving capabilities can receive public messages, the bandwidth occupied by the base station when sending public messages cannot exceed the receiving capabilities of UEs with lower capabilities. Resulting in inefficient transmission of public messages. How UEs with different capabilities can receive public messages while improving transmission efficiency as much as possible becomes a problem.

Contents of the invention

Embodiments of the present invention provide a method for transmitting downlink control information, user equipment and a base station, so that two types of UEs can respectively detect their respective common messages according to the common DCI.

In one aspect, a method for transmitting downlink control information is provided, including: receiving common downlink control information DCI from a base station, where the common DCI is used to indicate the first common The resources occupied by the message and the resources occupied by the second public message for the second type of UE; according to the public DCI, the first public message is detected in the resource occupied by the first public message or the second public message is detected in the resource occupied by the second public message The resource occupied by the second public message.

In another aspect, a method for transmitting downlink control information is provided, including: generating common downlink control information DCI, where the common DCI is used to indicate a first common message for a first type of user equipment UE in a physical downlink shared channel PDSCH resource The resources occupied by the second public message for the second type of UE; the common DCI is sent to the first type of UE and the second type of UE, and the resources occupied by the first public message are sent to the first The UE of one type sends the first public message or sends the second public message to the UE of the second type within the resources occupied by the second public message.

In another aspect, a method for transmitting downlink control information is provided, including: receiving common downlink control information DCI scrambled by an identifier, where the common DCI is used to indicate the physical downlink shared channel PDSCH resource for user equipment UE resources occupied by the public message; when it is determined that the identifier corresponds to the UE, according to the public DCI, detect the public message of the UE in the resource occupied by the public message.

In another aspect, a method for transmitting downlink control information is provided, including: generating common downlink control information DCI scrambled by an identifier, the identifier corresponds to a category of user equipment UE, and the identifier is used to indicate the common DCI Belonging to the UE, the common DCI is used to indicate the resource occupied by the common message for the UE in the physical downlink shared channel PDSCH resource; send the common DCI to the UE, and send the resource occupied by the common message to the UE Send this public message.

In another aspect, a user equipment is provided, including: a receiving unit, configured to receive common downlink control information DCI from a base station, where the common DCI is used to indicate the first type of user equipment UE in the physical downlink shared channel PDSCH resource A resource occupied by a public message and a resource occupied by a second public message for a second type of UE; a detection unit configured to detect the first public message in the resource occupied by the first public message according to the public DCI Or the second public message in the resources occupied by the second public message.

In another aspect, a base station is provided, including: a generating unit, configured to generate common downlink control information DCI, where the common DCI is used to indicate a first common message for a first type of user equipment UE in a physical downlink shared channel PDSCH resource Occupied resources and resources occupied by the second public message for the second type of UE; a sending unit configured to send the common DCI to the first type of UE and the second type of UE, and the resource occupied by the first public message The resource occupied by the second public message is used to send the first public message to the UE of the first type or the resource occupied by the second public message is used to send the second public message to the UE of the second type.

In another aspect, a user equipment is provided, including: a receiving unit, configured to receive common downlink control information DCI scrambled by an identifier, and the common DCI is used to indicate that the physical downlink shared channel PDSCH resource is targeted at the user equipment UE The resource occupied by the public message; the detection unit is configured to detect the public message of the UE in the resource occupied by the public message according to the public DCI when it is determined that the identifier is an identifier corresponding to the UE.

In another aspect, a base station is provided, including: a generating unit, configured to generate common downlink control information DCI scrambled by an identifier, the identifier corresponds to a category of user equipment UE, and the identifier is used to indicate the common DCI Belonging to the UE, the common DCI is used to indicate the resource occupied by the common message for the UE in the physical downlink shared channel PDSCH resource; the sending unit is used to send the common DCI to the UE, and the resource occupied by the common message resources to send the public message to the UE.

In the embodiment of the present invention, since the common DCI indicates two common messages for two types of UEs, when the base station transmits the two common messages indicated by the common DCI, the two types of UEs can respectively detect their respective common messages according to the common DCI , so that the transmission efficiency of public messages can be improved.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required in the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention.

Fig. 2 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention.

Fig. 3 is a schematic flowchart of a process of a method for transmitting DCI according to an embodiment of the present invention.

Fig. 4 is a mapping diagram of a first common message and a second common message in PDSCH resources according to an embodiment of the present invention.

Fig. 5 is a mapping diagram of a first common message and a second common message in PDSCH resources according to another embodiment of the present invention.

Fig. 6 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention.

Fig. 7 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention.

Fig. 8 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

Fig. 9 is a schematic block diagram of a base station according to an embodiment of the present invention.

Fig. 10 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

Fig. 11 is a schematic block diagram of a base station according to an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

The technical scheme of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (Global System of Mobile communication, GSM), Code Division Multiple Access (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access Wireless, WCDMA), General Packet Radio Service (General Packet Radio Service, GPRS), LTE, etc.

UE can also be called a mobile terminal (Mobile Terminal, MT), mobile user equipment, etc., and can communicate with one or more core networks through a radio access network (for example, Radio Access Network, RAN). The user equipment can be a mobile Terminals, such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, for example, may be portable, pocket, hand-held, in-computer, or vehicle-mounted mobile devices.

The base station may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an eNB or e-NodeB in LTE, which is not limited in the present invention.

Fig. 1 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention. The method in FIG. 1 is performed by a UE, for example, a UE of the first type or a UE of the second type.

110. Receive common DCI from the base station, where the common DCI is used to indicate resources occupied by the first common message for the first type of UE in Physical Downlink Shared Channel (PDSCH) resources and for the second type of UE Resources occupied by the second public message.

It should be noted that in the embodiment of the present invention, the first type of UE and the second type of UE can be divided according to the capability of the UE. For example, the first type of UE can have a higher receiving Downlink data with full frequency bandwidth. The second type of UE has a lower receiving capability and can be called a low-capability UE, which can only receive data in a part of the bandwidth, and cannot receive data in the full frequency band bandwidth. The UE of the first type and the UE of the second type may also be classified according to other attribute information of the UE, which is not limited in this embodiment of the present invention.

In this embodiment of the present invention, the common DCI indicates the resource occupied by the first common message for the first type of UE in the PDSCH resource and the resource occupied by the second common message for the second type of UE in the PDSCH resource, that is, One common DCI can indicate two common messages for two types of UEs, which can improve resource utilization.

Optionally, as an embodiment, the common DCI may include a first part of DCI and a second part of DCI, the first part of DCI includes a first downlink resource block allocation field, and the first downlink resource block allocation field is used to indicate that the first common message The starting position and number of PRBs occupied in the PDSCH resource. The second part of DCI includes a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of physical resource blocks (Physical Resource Block, PRB) occupied by the second common message in the PDSCH resource.

Optionally, as another embodiment, the second part of DCI may be dedicated to the second type of UE. The first part of DCI can be used jointly by the UE of the first type and the UE of the second type, which can save resources.

Optionally, as another embodiment, the common DCI may further include a third part of DCI, and the third part of DCI may be used to indicate that the common DCI indicates two common messages.

For example, the third part of DCI may also indicate that the common DCI indicates the first common message aimed at the first type of UE, and at this time, the common DCI is used by the first type of UE. The first type of UE can detect its own first public message according to the public DCI. At this time, the public DCI can include the used fields in the public DCI of the prior art. The definition of each field is similar to the prior art. In order to avoid repetition, I won't repeat them here. In addition, the third part of the DCI may also indicate that the common DCI indicates a common message, and both the first-type UE and the second-type UE must receive the common message, that is, the first-type UE and the second-type UE must receive the same common message , at this time, the common DCI may include the used fields in the common DCI of the prior art, and both the first-type UE and the second-type UE detect the common message indicated by the common DCI according to the common DCI, and the specific process may refer to the existing There are technologies, and in order to avoid repetition, they will not be repeated here.

120. According to the common DCI, detect the first common message in the resource occupied by the first common message or detect the second common message in the resource occupied by the second common message.

When the method is performed by the first type of UE, the first type of UE may detect the first common message in resources occupied by the first common message according to the common DCI. Specifically, the first type of UE may detect the first common message according to the first part of DCI.

When the method is performed by the UE of the second type, the UE of the second type may detect the second public message in resources occupied by the second public message according to the public DCI. Specifically, the second type of UE may detect the second common message according to the first part of DCI and the second part of DCI.

Optionally, as another embodiment, the UE of the second type may determine the end position of the PRB occupied by the first public message in the PDSCH resource according to the first downlink resource block allocation field, and assign the next PRB at the end position The position of is used as the starting position of the PRB occupied by the second public message in the PDSCH resource, according to the starting position of the PRB occupied by the second public message in the PDSCH resource and the number of PRBs occupied by the second public message in the PDSCH resource, The second common message is detected in resources occupied by the second common message.

Specifically, the position of the second public message in the PDSCH resource may be adjacent to the position of the first public message in the PDSCH resource, that is, the next PRB adjacent to the last PRB occupied by the first public message in the PDSCH resource. One PRB is the first PRB occupied by the second public message in the PDSCH resource. In this way, there is no need to indicate the starting position of the PRB occupied by the second common message in the PDSCH resource to the UE of the second type in the common DCI, thereby saving the overhead of the common DCI.

Optionally, as another embodiment, when the method is performed by a UE of the second type, the UE of the second type may use the starting position of the PRB occupied in the PDSCH resource in the second public message and the location of the PRB occupied in the PDSCH resource in the second public message. The second public message is detected in the resources occupied by the second public message, and the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined.

Optionally, as another embodiment, the predefined starting position of the PRB occupied by the second public message in the PDSCH resource may be indicated by system information or radio resource control (RadioResource Control, RRC) signaling, or It may be a fixed position in the PDSCH resource, or may be the starting position of the dedicated subband of the UE of the second type in the PDSCH resource, or may be a position with a fixed frequency domain offset from the starting position of the dedicated subband.

The dedicated subband may be a dedicated subband allocated for the second type of UE. For example, when the second type of UE is a low-capability UE, it can only receive data in a part of the bandwidth, for example, it can only receive data in 1/4 of the system bandwidth, then this 1/4 bandwidth can be called a dedicated subband for the low-capability UE . As for the specific position of the dedicated subband in the entire system bandwidth, the UE of the second type can obtain it through high-level signaling sent by the base station or by frequency hopping. In this way, there is no need to indicate the starting position of the PRB occupied by the second common message in the PDSCH resource to the UE of the second type in the common DCI, thereby saving the overhead of the common DCI.

In the embodiment of the present invention, since the common DCI indicates two common messages for two types of UEs, when the base station transmits the two common messages indicated by the common DCI, the two types of UEs can respectively detect their respective common messages according to the common DCI , so that the transmission efficiency of public messages can be improved.

Fig. 2 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention. The method in Fig. 2 is executed by the base station.

210. Generate common DCI, where the common DCI is used to indicate resources occupied by the first common message for the first type of UEs and resources occupied by the second common message for the second type of UEs in the PDSCH resources.

It should be noted that in the embodiment of the present invention, the first type of UE and the second type of UE can be divided according to the capability of the UE. For example, the first type of UE can have a higher receiving Downlink data with full frequency bandwidth. The second type of UE has a lower receiving capability and can be called a low-capability UE, which can only receive data in a part of the bandwidth, and cannot receive data in the full frequency band bandwidth. The UE of the first type and the UE of the second type may also be classified according to other attribute information of the UE, which is not limited in this embodiment of the present invention.

Optionally, as an embodiment, the common DCI may include a first part of DCI and a second part of DCI, the first part of DCI may include a first downlink resource block allocation field, and the first downlink resource block allocation field is used to indicate the first common The starting position and number of PRBs occupied by the message in the PDSCH resource. The second part of DCI may include a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource. .

Optionally, as another embodiment, the PRB position next to the end position of the PRB occupied by the first public message in the PDSCH resource may be the start position of the PRB occupied by the second public message in the PDSCH resource. Or the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined, wherein the starting position of the PRB occupied by the second public message in the PDSCH resource may be indicated by system information or RRC signaling, Either it is a fixed position in the PDSCH resource, or it is the starting position of the dedicated subband of the UE of the second type in the PDSCH resource, or it is a position separated from the starting position of the dedicated subband by a fixed frequency domain offset.

Optionally, as another embodiment, the second part of DCI may be dedicated to the second type of UE. The first part of DCI can be used jointly by the UE of the first type and the UE of the second type, which can save resources.

220. Send the common DCI to the first type of UE and the second type of UE, and send the first public message to the first type of UE in the resource occupied by the first public message or send the first public message to the first type of UE in the resource occupied by the second public message. The second type of UE sends the second public message.

Optionally, as another embodiment, the common DCI may further include a third part of DCI, and the third part of DCI may be used to indicate that the common DCI indicates two common messages.

Specifically, if the base station determines to send two common messages to the first type UE and the second type UE respectively, the third part of DCI may be used to indicate that the common DCI indicates two common messages. If the base station determines to only send the first public message to the first type of UE, the third part of the DCI may indicate that the public DCI indicates the first public message for the first type of UE, and at this time, the public DCI is used by the first type of UE. The first type of UE can detect its own first public message according to the public DCI. At this time, the public DCI can include the used fields in the public DCI of the prior art. The definition of each field is similar to the prior art. In order to avoid repetition, I won't repeat them here. In addition, if the base station determines to send the same common message to the first type of UE and the second type of UE, the third part of the DCI may indicate that the common DCI indicates a common message, and at this time, the common DCI may include The used fields of the first type of UE and the second type of UE detect the common message indicated by the common DCI according to the common DCI. The specific process can refer to the prior art, and will not be repeated here to avoid repetition.

After the first type of UE and the second type of UE receive the common DCI, the first type of UE can detect its own first public message according to the common DCI, and the second type of UE can detect its own second public message according to the common DCI .

In the embodiment of the present invention, since the common DCI indicates two common messages for the two types of UEs, the base station can respectively transmit the respective common messages of the two types of UEs, thereby improving the transmission efficiency of the common messages.

The embodiments of the present invention will be described in detail below in conjunction with specific examples.

Fig. 3 is a schematic flowchart of a process of a method for transmitting DCI according to an embodiment of the present invention.

301. The base station generates common DCI, where the common DCI may indicate resources occupied by a first common message for a first type of UE in PDSCH resources and resources occupied by a second common message for a second type of UE in PDSCH resources.

The common DCI may include a first partial DCI and a second partial DCI, the first partial DCI is used to indicate the first common message, and the first partial DCI and the second partial DCI may be used to indicate the second common message. Therefore, the first part of DCI may be shared by the first type of UE and the second type of UE, and the second part of DCI may be dedicated by the second type of UE.

The length of the common DCI may be the same as that of the common DCI in the prior art, the first part of the DCI may include bits used in the common DCI of the prior art, and the second part of the DCI may include bits reserved in the common DCI of the prior art The base station and the second-type UE may predefine the reserved bits as a dedicated field for the second-type UE.

The first part of DCI may include a first downlink resource block allocation field, and the first downlink resource block allocation field may be used to indicate the position of the first public message for the first type of UE in the PDSCH resource, that is, the first public message is in the PDSCH resource. The starting position and number of PRBs occupied in the PDSCH resource.

The first part of the DCI may also include a first PUCCH power control field, which is similar to the PUCCH power control field in the common DCI of the prior art, and the first PUCCH power control field may be used to indicate the bits of the transport block sent by the base station to the first type of UE The number of PRBs corresponding to the number.

The first part of DCI may also include a modulation and coding scheme (Modulation and CodingScheme, MCS) field, and the MCS field may be used to indicate the modulation method used for the first public message and the second public message and to the first type of UE and the second type of UE The index corresponding to the transport block sent by the UE.

In addition, the first part of DCI may also include other fields used in the common DCI of the prior art, such as format 0 and 1A distinguishing identification field, virtual resource block allocation type identification field and new data indication field, etc. For definitions of these fields, please refer to In order to avoid repetition, the prior art will not be repeated here.

The second part of the DCI may include a second downlink resource block allocation field, and the second downlink resource block allocation field may be used to indicate the number of PRBs occupied by the PDSCH resource for the second common message for the second type of UE. For example, the length of the second downlink resource block allocation field may be 2 bits, and the mapping relationship between the 2-bit second downlink resource block allocation field and the resource length occupied by the second common message may be defined, as shown in Table 1.

Table 1 Mapping relationship between the second downlink resource allocation field and the number of PRBs occupied by the second public message

bit indication bandwidth length 00 1/4 narrow bandwidth 01 1/2 narrow bandwidth 10 3/4 narrow bandwidth 11 narrow bandwidth

Wherein, the narrow bandwidth may indicate the bandwidth that the UE of the second type can support, and may also refer to the total number of PRBs that can be received.

It should be noted that the above examples in Table 1 are only intended to help those skilled in the art better understand the embodiments of the present invention, rather than limiting the scope of the embodiments of the present invention. For example, the length of the second downlink resource block allocation field may also be other number of bits, and there may be other mapping relationships between the second downlink resource block allocation field and the number of PRBs occupied by the second common message. Not limited.

In addition, the starting position of the second common message in the PDSCH resource can be determined in different ways without indicating in the common DCI, which can save the overhead of the common DCI.

Optionally, the position of the second public message in the PDSCH resource may be adjacent to the position of the first public message in the PDSCH resource, and the starting position of the occupied PRB may be the position occupied by the first public message in the PDSCH resource The position of the next PRB to the end position of the PRB.

The following will be described in conjunction with specific examples. Fig. 4 is a mapping diagram of a first common message and a second common message in PDSCH resources according to an embodiment of the present invention. In FIG. 4 , the positional relationship between the first common message and the second common message in the PDSCH resource in the LTE release (Release) 8 system is described. In this way, there is no need to indicate the starting position of the PRB occupied by the second common message in the PDSCH resource to the UE of the second type in the common DCI, thereby saving the overhead of the common DCI.

Optionally, the starting position of the second public message in the PDSCH resource may be predefined. For example, the starting position of the PRB occupied by the second public message in the PDSCH resource may be indicated by system information or RRC signaling, or may be a fixed position in the PDSCH resource, or may be the second type of UE in the PDSCH resource The starting position of the dedicated subband of , or may be a position with a fixed frequency domain offset from the starting position of the dedicated subband. The following will be described in conjunction with specific examples. Fig. 5 is a mapping diagram of a first common message and a second common message in PDSCH resources according to another embodiment of the present invention.

In FIG. 5 , it is assumed that the starting position of the second public message in the PDSCH resource is the starting position of the dedicated subband of the UE of the second type in the PDSCH resource. The location of the dedicated subband may be determined through high layer signaling instructions or frequency hopping. In this way, there is no need to indicate the starting position of the PRB occupied by the second common message in the PDSCH resource to the UE of the second type in the common DCI, thereby saving the overhead of the common DCI.

302. The base station sends the common DCI generated in step 301 to the first type of UE and the second type of UE, and sends the first public message and the resources occupied by the second public message to the first type of UE in the resources occupied by the first public message. The second public message is sent to the second type of UE in the resource.

303. The UE of the first type detects the first common message in resources occupied by the first common message according to the common DCI in step 302.

Specifically, the UE of the first type may detect the first common message in resources occupied by the first common message according to the first part of the DCI in the common DCI. For example, the first type of UE may determine the starting position and number of PRBs occupied by the first public message in the PDSCH resource according to the first downlink resource block allocation field. The UE of the first type may determine, according to the MCS field, the modulation mode of the first common message and the index corresponding to the transport block sent to itself by the base station. The first type of UE may also determine the number of bits of the transport block according to the first PUCCH power control field and the MCS field. The specific operation process for the first type of UE to detect the first public message may refer to the prior art, and in order to avoid repetition, details are not repeated here.

304. The UE of the second type detects the second type of public message in the resources occupied by the second public message according to the common DCI in step 302.

Specifically, the second type of UE may detect the public message in the resources occupied by the second public message according to the first part of the DCI and the second part of the DCI in the common DCI.

For example, the second type of UE may determine the end position of the PRB occupied by the first public message in the PDSCH resource according to the first part of DCI, and use the position of the next PRB after the end position as the position of the PRB occupied by the second public message in the PDSCH resource. starting point. Then the second type of UE can detect the second resource block occupied by the second common message in the resource occupied by the second common message according to the starting position of the PRB occupied by the second common message in the PDSCH resource and the second downlink resource block allocation field in the second part of DCI. class public messages.

The second type of UE may also detect the second resource in the resource occupied by the second public message according to the starting position of the PRB occupied by the second public message in the PDSCH resource and the second downlink resource block allocation field in the second part of DCI. For public messages, the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined. For specific description, refer to step 301.

In addition, the second type of UE may also determine the number of PRBs corresponding to the transport blocks sent by the base station to itself according to the second PUCCH power control field in the second part of DCI. The modulation scheme of the second common message and the index corresponding to the transport block may also be determined according to the MCS field of the first part of the DCI. In addition, the number of bits of the transport block may also be determined according to the MCS field and the second PUCCH power control field.

For the UE of the second type to determine other relevant scheduling information of the second public message according to the first part of DCI, reference may be made to the prior art, and details are not repeated here to avoid repetition.

It should be understood that the sequence numbers of the above processes do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention. For example, step 303 may be performed in parallel with or after step 304 .

In the embodiment of the present invention, since the common DCI indicates two common messages for two types of UEs, when the base station transmits the two common messages indicated by the common DCI, the two types of UEs can respectively detect their respective common messages according to the common DCI , so that the transmission efficiency of public messages can be improved.

In addition, the common DCI may also include a third part of the DCI, and in the case where the third part of the DCI is used to indicate that the common DCI indicates two common messages, the above steps 301 to 304 may be performed.

The third part of the DCI may include reserved bits in the common DCI of the prior art. For example, the length of the third part of DCI may be 1 bit. For example, when the value of the third part of DCI is set to "0", it may indicate that the public DCI in step 301 indicates two public messages, that is, the first public message and the second public message. When sending public messages of the two types of UEs with the second type of UEs, the value of the third part of DCI may be set to "0".

When the value of the DCI in the third part is "1", it can be predefined as different meanings according to the actual situation. For example, when the value of the third part of DCI is "1", it may indicate that the public DCI at this time may indicate the first public message, that is, the public DCI at this time is used by the UE of the first type. Therefore, when the base station determines to only send the first public message to the first type of UE, the value of the third part of DCI can be set to "1", and the first type of UE detects the first public message according to the public DCI at this time. The specific process can be Referring to the prior art, in order to avoid repetition, details are not repeated here. In addition, when the value of the third part of the DCI is "1", it may also indicate that the common DCI at this time indicates a common message received by the UE of the first type and the UE of the second type. Therefore, when the base station determines to send the same public message to the first-type UE and the second-type UE, the value of the third part of DCI can be set to "1", and the first-type UE and the second-type UE can The DCI respectively detects the same common information, and the specific process may refer to the prior art, and in order to avoid repetition, details are not repeated here.

Fig. 6 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention. The method in FIG. 6 is executed by a UE, for example, it may be a UE of the first type or a UE of the second type.

610. Receive common DCI scrambled by an identifier, where the common DCI is used to indicate resources occupied by common messages aimed at the UE in PDSCH resources.

620. When it is determined that the identifier corresponds to the UE, according to the common DCI, detect the public message of the UE in resources occupied by the public message.

Specifically, when the UE of the first type or the UE of the second type determines that the identifier is an identifier corresponding to its own category, the public message of the UE is detected in resources occupied by the public message according to the common DCI. That is, when the method is executed by the UE of the first type, the UE of the first type can detect its own public message in resources occupied by the public message according to the public DCI. When the method is executed by the UE of the second type, the UE of the second type can detect its own public message in resources occupied by the public message according to the public DCI.

It should be understood that in the embodiment of the present invention, the category of the UE may be the capability category of the UE, that is, it may be classified according to the capability of the UE. For example, it can be divided into the first type of UE and the second type of UE. The first type of UE may have a relatively high receiving capability, may be called a high-capability UE, and may receive downlink data of a full frequency band bandwidth. The second type of UE has a lower receiving capability and can be called a low-capability UE, which can only receive data in a part of the bandwidth, and cannot receive data in the full frequency band bandwidth. The UE of the first type and the UE of the second type may also be classified according to other attribute information of the UE, which is not limited in this embodiment of the present invention.

Optionally, as an embodiment, when the identifier corresponds to the first type of UE, the identifier may include a System Information-Radio Network Temporary Identifier (SI-RNTI), a paging wireless network temporary identifier Paging-RadioNetwork Temporary Identifier (P-RNTI) or Random Access Response-Radio Network Temporary Identifier (RAR-RNTI).

Optionally, as another embodiment, when the identifier corresponds to the second type of UE, the identifier may include the second type of system message radio network temporary identifier (Second System Information-RadioNetwork Temporary Identifier, SSI-RNTI), the first Second Paging-Radio Network Temporary Identifier (SP-RNTI) or Second Random Access Response-RadioNetwork Temporary Identifier (SRAR-RNTI). It should be understood that these identifiers are newly defined identifiers, which are different from the scrambled identifiers in the prior art. The embodiment modifies the name corresponding to the identifier of the second type of UE, and such modification also falls within the scope of the embodiments of the present invention.

In this embodiment of the present invention, the common DCI for the first type of UE and the common DCI for the second type of UE are respectively scrambled by different identifiers. Therefore, after the first type of UE or the second type of UE receives the common DCI, when it is determined that When the identifier scrambled to the common DCI is an identifier corresponding to its own category, its own common message is detected based on the common DCI.

In the embodiment of the present invention, since the identifier for scrambling the common DCI corresponds to the category of the UE, the common DCI can correspond to different categories of UEs. Therefore, when the base station transmits public messages for different categories of UEs, different categories The UEs can detect corresponding public messages according to their respective public DCIs, thereby improving the transmission efficiency of public messages.

Fig. 7 is a schematic flowchart of a method for transmitting DCI according to an embodiment of the present invention. The method in FIG. 7 is executed by the base station.

710. Generate common DCI scrambled by an identifier, the identifier corresponds to the category of the UE, the identifier is used to indicate that the common DCI belongs to the UE, and the common DCI is used to indicate the common DCI for the UE in the PDSCH resource The resources used by the message.

It should be understood that in the embodiment of the present invention, the category of the UE may be the capability category of the UE, that is, it may be classified according to the capability of the UE. For example, it can be divided into the first type of UE and the second type of UE. The first type of UE may have a relatively high receiving capability, may be called a high-capability UE, and may receive downlink data of a full frequency band bandwidth. The second type of UE has a lower receiving capability and can be called a low-capability UE, which can only receive data in a part of the bandwidth, and cannot receive data in the full frequency band bandwidth. The UE of the first type and the UE of the second type may also be classified according to other attribute information of the UE, which is not limited in this embodiment of the present invention.

Optionally, as an embodiment, when the identifier corresponds to the first type of UE, the identifier may include SI-RNTI, P-RNTI or RAR-RNTI.

Optionally, as another embodiment, when the identifier corresponds to the second type of UE, the identifier may include SSI-RNTI, SP-RNTI or SRAR-RNTI. It should be understood that these identifiers are newly defined identifiers, which are different from the scrambled identifiers in the prior art. The embodiment modifies the name corresponding to the identifier of the second type of UE, and such modification also falls within the scope of the embodiments of the present invention.

720. Send the public DCI to the UE, and send a public message to the UE in resources occupied by the public message.

When determining to send the public message to the first type of UE, the base station may generate a public DCI scrambled by an identifier corresponding to the first type of UE, and the public DCI indicates the public message for the first type of UE. When determining to send the public message to the UE of the second type, the base station may generate a public DCI scrambled by an identifier corresponding to the UE of the second type, and the public DCI indicates the public message aimed at the UE of the second type. In this way, the UE of the first type and the UE of the second type can respectively receive their own public DCI, so as to respectively detect their own public messages according to the common DCI.

In the embodiment of the present invention, since the identifier for scrambling the common DCI corresponds to the category of the UE, the common DCI can correspond to different categories of UEs, so the base station can respectively transmit the common messages, which can improve the transmission efficiency of public messages.

Fig. 8 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 800 in FIG. 8 includes a receiving unit 810 and a detecting unit 820 . The receiving unit 810 and the detecting unit 820 may be specifically located in a processor of the user equipment 800 .

The receiving unit 810 receives common DCI from the base station, where the common DCI is used to indicate the resource occupied by the first common message for the first type of UE and the resource occupied by the second common message for the second type of UE in the PDSCH resource. The detecting unit 820 detects the first common message in the resources occupied by the first common message or detects the second common message in the resources occupied by the second common message according to the common DCI.

In the embodiment of the present invention, since the common DCI indicates two common messages for two types of UEs, when the two common messages are transmitted separately, the two types of UEs can respectively detect their respective common messages according to the common DCI, thereby improving The transmission efficiency of public information.

For other functions and operations of the user equipment 800, reference may be made to the processes involving the UE in the method embodiments in FIG. 1 and FIG. 3 above, and details are not repeated here to avoid repetition.

Optionally, as an embodiment, the common DCI may include a first part of DCI and a second part of DCI, the first part of DCI may include a first downlink resource block allocation field, and the first downlink resource block allocation field is used to indicate the first common The starting position and number of PRBs occupied by the message in the PDSCH resource. The second part of DCI may include a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource.

Optionally, as another embodiment, when the user equipment 800 is a UE of the second type, the detection unit 820 may determine the end position of the PRB occupied by the first common message in the PDSCH resource according to the first downlink resource block allocation field, And the position of the next PRB of the end position is used as the starting position of the PRB occupied by the second public message in the PDSCH resource, according to the starting position of the PRB occupied in the PDSCH resource by the second public message and the second public message in The number of PRBs occupied by the PDSCH resource is used to detect the second public message in the resource occupied by the second public message.

Optionally, as another embodiment, when the user equipment 800 is a UE of the second type, the detecting unit 820 may use the starting position of the PRB occupied in the PDSCH resource by the second public message and the PRB occupied by the second public message in the PDSCH resource. The second public message is detected in the resource occupied by the second public message, and the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined.

Optionally, as another embodiment, the starting position of the PRB occupied by the second public message on the PDSCH resource may be indicated by system information or RRC signaling, or may be a fixed position in the PDSCH resource, or may be The starting position of the dedicated subband of the second type of UE in the PDSCH resource may be a position separated from the starting position of the dedicated subband by a fixed frequency domain offset.

Optionally, as another embodiment, the foregoing second part of DCI may be dedicated to the UE of the second type.

Optionally, as another embodiment, the common DCI may further include a third part of DCI, and the third part of DCI may be used to indicate that the common DCI indicates two common messages.

In the embodiment of the present invention, since the common DCI indicates two common messages for two types of UEs, when the base station transmits the two common messages indicated by the common DCI, the two types of UEs can respectively detect their respective common messages according to the common DCI , so that the transmission efficiency of public messages can be improved.

Fig. 9 is a schematic block diagram of a base station according to an embodiment of the present invention. The base station 900 in FIG. 9 includes a generating unit 910 and a sending unit 920 . The generating unit 910 and the sending unit 920 may be specifically located in a processor of the base station 900 .

The generating unit 910 generates common DCI, and the common DCI is used to indicate, in the PDSCH resource, the resources occupied by the first common message for the first type of UEs and the resources occupied by the second common message for the second type of UEs. The sending unit 920 sends the common DCI to the first type of UE and the second type of UE, and sends the first public message to the first type of UE in the resource occupied by the first public message or in the resource occupied by the second public message The second public message is sent to the second type of UE.

In the embodiment of the present invention, since the common DCI indicates two common messages for the two types of UEs, the base station can respectively transmit the respective common messages of the two types of UEs, thereby improving the transmission efficiency of the common messages.

For other functions and operations of the base station 900, reference may be made to the processes involving the base station in the above method embodiments in FIG. 2 and FIG. 3 , and details are not repeated here to avoid repetition.

Optionally, as an embodiment, the common DCI may include a first part of DCI and a second part of DCI, the first part of DCI may include a first downlink resource block allocation field, and the first downlink resource block allocation field is used to indicate the first common The starting position and number of PRBs occupied by the message in the PDSCH resource. The second part of DCI may include a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource.

Optionally, as another embodiment, the foregoing second part of DCI may be dedicated to the second type of UE.

Optionally, as another embodiment, the common DCI may further include a third part of DCI, where the third part of DCI is used to indicate that the common DCI indicates two common messages.

In the embodiment of the present invention, since the common DCI indicates two common messages for the two types of UEs, the base station can respectively transmit the respective common messages of the two types of UEs, thereby improving the transmission efficiency of the common messages.

Fig. 10 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 1000 in FIG. 10 includes a receiving unit 1010 and a detecting unit 1020 . The receiving unit 1010 and the detecting unit 1020 may be specifically located in a processor of the user equipment 1000 .

The receiving unit 1010 receives the common DCI scrambled by the identifier, and the common DCI is used to indicate the resource occupied by the common message aimed at the UE in the PDSCH resource. When the detection unit 1020 determines that the identifier is an identifier corresponding to the UE, according to the common DCI, detect the public message of the UE in the resource occupied by the public message.

In the embodiment of the present invention, since the identifier for scrambling the common DCI corresponds to the category of the UE, the common DCI can correspond to different categories of UEs. Therefore, when the base station transmits public messages for different categories of UEs, different categories The UEs can detect corresponding public messages according to their respective public DCIs, thereby improving the transmission efficiency of public messages.

For other functions and operations of the user equipment 1000, reference may be made to the UE-related process in the above method embodiment in FIG. 6 , and details are not repeated here to avoid repetition.

Optionally, as an embodiment, when the identifier corresponds to the first type of UE, the identifier may include SI-RNTI, P-RNTI or RAR-RNTI. Or when the identifier corresponds to the second type of UE, the identifier may include SSI-RNTI, SP-RNTI or SRAR-RNTI.

Fig. 11 is a schematic block diagram of a base station according to an embodiment of the present invention. The base station 1100 in FIG. 11 includes a generating unit 1110 and a sending unit 1120 . The generating unit 1110 and the sending unit 1120 may be specifically located in a processor of the base station 1100 .

The generating unit 1110 generates common DCI scrambled by an identifier, the identifier corresponds to the category of the UE, the identifier is used to indicate that the common DCI belongs to the UE, and the common DCI is used to indicate the common DCI for the UE in the PDSCH resource. The resources used by the message. The sending unit 1120 sends the public DCI to the UE, and sends the public message to the UE in resources occupied by the public message.

In the embodiment of the present invention, since the identifier for scrambling the common DCI corresponds to the category of the UE, the common DCI can correspond to different categories of UEs, so the base station can respectively transmit the common messages, which can improve the transmission efficiency of public messages.

For other functions and operations of the base station 1100, reference may be made to the process involving the base station in the above method embodiment in FIG. 7 , and details are not repeated here to avoid repetition.

Optionally, as an embodiment, when the identifier corresponds to the first type of UE, the identifier may include SI-RNTI, P-RNTI or RAR-RNTI. Or when the identifier corresponds to the second type of UE, the identifier may include SSI-RNTI, SP-RNTI or SRAR-RNTI.

In the embodiment of the present invention, since the identifier for scrambling the common DCI corresponds to the category of the UE, the common DCI can correspond to different categories of UEs, so the base station can respectively transmit the common messages, which can improve the transmission efficiency of public messages.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (32)

1. A method for transmitting downlink control information, comprising: Receive common downlink control information DCI from the base station, the common DCI is used to indicate the resource occupied by the first common message for the first type of user equipment UE in the physical downlink shared channel PDSCH resource and the second common message for the second type of UE The resources occupied by the message; According to the common DCI, the first common message is detected in resources occupied by the first common message or the second common message is detected in resources occupied by the second common message. 2. The method according to claim 1, wherein the common DCI includes a first partial DCI and a second partial DCI, the first partial DCI includes a first downlink resource block allocation field, and the first downlink The resource block allocation field is used to indicate the starting position and number of PRBs occupied by the first common message in the PDSCH resource, The second part of the DCI includes a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource. 3. The method according to claim 2, wherein when the method is executed by the UE of the second type, according to the common DCI, the resource occupied by the second common message is detected The above-mentioned second public message, including: According to the first downlink resource block allocation field, determine the end position of the PRB occupied by the first common message in the PDSCH resource, and use the position of the next PRB after the end position as the second common The starting position of the PRB occupied by the message in the PDSCH resource; According to the starting position of the PRB occupied by the second public message in the PDSCH resource and the number of PRBs occupied by the second public message in the PDSCH resource, detect the Second public message. 4. The method according to claim 2, wherein when the method is executed by the UE of the second type, The detecting the second public message in resources occupied by the second public message according to the common DCI includes: According to the starting position of the PRB occupied by the second public message in the PDSCH resource and the number of PRBs occupied by the second public message in the PDSCH resource, the resources occupied by the second public message Detect the second public message in the PDSCH resource, where the starting position of the PRB occupied by the second public message in the PDSCH resource is predefined. 5. The method according to claim 4, wherein the starting position of the PRB occupied by the second public message in the PDSCH resource is indicated by system information or radio resource control (RRC) signaling, or is The fixed position in the PDSCH resource is either the starting position of the dedicated subband of the UE of the second type in the PDSCH resource, or a fixed frequency domain offset away from the starting position of the dedicated subband s position. 6. The method according to any one of claims 2 to 5, wherein the second part of DCI is dedicated to the second type of UE. 7. The method according to any one of claims 1 to 6, wherein the common DCI further comprises a third partial DCI, the third partial DCI is used to indicate that the common DCI indicates two common messages . 8. A method for transmitting downlink control information, comprising: generating common downlink control information DCI, where the common DCI is used to indicate the resources occupied by the first common message for the first type of user equipment UE and the resources occupied by the second common message for the second type of UE in the physical downlink shared channel PDSCH resource resources used; sending the common DCI to the first type of UE and the second type of UE, and sending the first common message to the first type of UE in the resource occupied by the first common message or in the second The second public message is sent to the UE of the second type in the resource occupied by the second public message. 9. The method according to claim 8, wherein the common DCI includes a first part of DCI and a second part of DCI, the first part of DCI includes a first downlink resource block allocation field, and the first downlink The resource block allocation field is used to indicate the starting position and number of PRBs occupied by the first common message in the PDSCH resource; the second part of DCI includes a second downlink resource block allocation field, and the second downlink resource The block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource. 10. The method according to claim 9, wherein the position of the PRB next to the end position of the PRB occupied by the first public message in the PDSCH resource is the position of the second public message in the PDSCH resource the starting position of the occupied PRB; or The starting position of the PRB occupied by the second public message in the PDSCH resource is predefined, wherein the starting position of the PRB occupied by the second public message in the PDSCH resource is determined by system information or radio The resource control RRC signaling indicates either a fixed position in the PDSCH resource, or the starting position of the dedicated subband of the UE of the second type in the PDSCH resource, or a location related to the dedicated subband The starting position of is at a fixed frequency-domain offset away. 11. The method according to claim 9 or 10, wherein the second part of DCI is dedicated to the second type of UE. 12. The method according to any one of claims 8 to 11, wherein the common DCI further comprises a third partial DCI, the third partial DCI is used to indicate that the common DCI indicates two common messages . 13. A method for transmitting downlink control information, comprising: receiving common downlink control information DCI scrambled by an identifier, where the common DCI is used to indicate the resource occupied by the common message for the user equipment UE in the physical downlink shared channel PDSCH resource; When it is determined that the identifier is an identifier corresponding to the UE, detecting the public message of the UE in resources occupied by the public message according to the public DCI. 14. The method according to claim 13, wherein when the identifier corresponds to the first type of UE, the identifier includes a system message radio network temporary identifier SI-RNTI, a paging radio network temporary identifier P-RNTI or Random Access Response Radio Network Temporary Identifier RAR-RNTI; or, When the identifier corresponds to the second type of UE, the identifier includes the second type of system message radio network temporary identifier SSI-RNTI, the second type of paging radio network temporary identifier SP-RNTI or the second type of random Access Response Radio Network Temporary Identifier SRAR-RNTI. 15. A method for transmitting downlink control information, comprising: generating common downlink control information DCI scrambled by an identifier, the identifier corresponds to the category of the user equipment UE, the identifier is used to indicate that the common DCI belongs to the UE, and the common DCI is used to indicate that the physical The resource occupied by the common message for the UE in the downlink shared channel PDSCH resource; sending the common DCI to the UE, and sending the common message to the UE in resources occupied by the common message. 16. The method according to claim 15, wherein when the identifier corresponds to the first type of UE, the identifier includes a system message radio network temporary identifier SI-RNTI, a paging radio network temporary identifier P-RNTI or Random Access Response Radio Network Temporary Identifier RAR-RNTI; or, When the identifier corresponds to the second type of UE, the identifier includes the second type of system message radio network temporary identifier SSI-RNTI, the second type of paging radio network temporary identifier SP-RNTI or the second type of random Access Response Radio Network Temporary Identifier SRAR-RNTI. 17. A user equipment, characterized by comprising: The receiving unit is configured to receive common downlink control information DCI from the base station, and the common DCI is used to indicate resources occupied by the first common message for the first type of user equipment UE in the physical downlink shared channel PDSCH resource and for the second type resources occupied by the second public message of the UE; A detecting unit, configured to detect the first common message in resources occupied by the first common message or detect the second common message in resources occupied by the second common message according to the common DCI . 18. The user equipment according to claim 17, wherein the common DCI includes a first partial DCI and a second partial DCI, the first partial DCI includes a first downlink resource block allocation field, and the first downlink The row resource block allocation field is used to indicate the starting position and number of PRBs occupied by the first common message in the PDSCH resource; The second part of the DCI includes a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource. 19. The user equipment according to claim 18, wherein when the user equipment is the UE of the second type, The detection unit is specifically configured to determine the end position of the PRB occupied by the first common message in the PDSCH resource according to the first downlink resource block allocation field, and set the end position of the next PRB at the end position The position is used as the starting position of the PRB occupied by the second public message in the PDSCH resource; according to the starting position of the PRB occupied by the second public message in the PDSCH resource and the position of the PRB occupied by the second public message in the PDSCH resource The number of PRBs of , and the second public message is detected in resources occupied by the second public message. 20. The user equipment according to claim 18, wherein when the user equipment is the UE of the second type, The detection unit is specifically configured to, according to the starting position of the PRB occupied by the second public message in the PDSCH resource and the number of PRBs occupied by the second public message in the PDSCH resource, in the second public message The second public message is detected in the resource occupied by the second public message, and the starting position of the PRB occupied by the second public message in the PDSCH resource is predefined. 21. The user equipment according to claim 20, wherein the starting position of the PRB occupied by the second public message in the PDSCH resource is indicated by system information or radio resource control (RRC) signaling, or is a fixed position in the PDSCH resource, or is the starting position of the dedicated subband of the UE of the second type in the PDSCH resource, or is a fixed frequency domain offset away from the starting position of the dedicated subband moved position. 22. The user equipment according to any one of claims 18-21, wherein the second part of DCI is dedicated to the second type of UE. 23. The user equipment according to any one of claims 17 to 22, wherein the common DCI further includes a third partial DCI, and the third partial DCI is used to indicate that the common DCI indicates two public information. 24. A base station, comprising: A generating unit, configured to generate common downlink control information DCI, where the common DCI is used to indicate in the physical downlink shared channel PDSCH resources the resource occupied by the first common message for the first type of user equipment UE and the resource occupied by the first type of UE for the second type of UE resources occupied by the second public message; a sending unit, configured to send the common DCI to the first type of UE and the second type of UE, and send the first common message to the first type of UE in the resource occupied by the first common message Or send the second public message to the UE of the second type in the resources occupied by the second public message. 25. The base station according to claim 24, wherein the common DCI includes a first part of DCI and a second part of DCI, the first part of DCI includes a first downlink resource block allocation field, and the first downlink The resource block allocation field is used to indicate the starting position and number of PRBs occupied by the first common message in the PDSCH resource; the second part of DCI includes a second downlink resource block allocation field, and the second downlink resource The block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource. 26. The base station according to claim 25, wherein the position of the PRB next to the end position of the PRB occupied by the first public message in the PDSCH resource is the position of the second public message in the PDSCH resource the starting position of the occupied PRB; or The starting position of the PRB occupied by the second public message in the PDSCH resource is predefined, wherein the starting position of the PRB occupied by the second public message in the PDSCH resource is determined by system information or radio The resource control RRC signaling indicates either a fixed position in the PDSCH resource, or the starting position of the dedicated subband of the UE of the second type in the PDSCH resource, or a location related to the dedicated subband The starting position of is at a fixed frequency-domain offset away. 27. The base station according to claim 25 or 26, wherein the second part of DCI is dedicated to the second type of UE. 28. The base station according to any one of claims 24 to 27, wherein the common DCI further includes a third part of DCI, and the third part of DCI is used to indicate that the common DCI indicates two common messages . 29. A user equipment, characterized by comprising: The receiving unit is configured to receive the common downlink control information DCI scrambled by the identifier, and the common DCI is used to indicate the resource occupied by the common message for the user equipment UE in the physical downlink shared channel PDSCH resource; The detection unit is configured to detect the public message of the UE in the resource occupied by the public message according to the public DCI when it is determined that the identifier is an identifier corresponding to the UE. 30. The user equipment according to claim 29, wherein when the identifier corresponds to the first type of UE, the identifier includes a system message radio network temporary identifier SI-RNTI, a paging radio network temporary The identifier P-RNTI or the random access response radio network temporary identifier RAR-RNTI; or, when the identifier corresponds to the second type of UE, the identifier includes the second type of system message radio network temporary identifier SSI - RNTI, a second type of paging radio network temporary identifier SP-RNTI or a second type of random access response radio network temporary identifier SRAR-RNTI. 31. A base station, comprising: A generating unit, configured to generate common downlink control information DCI scrambled by an identifier, the identifier corresponds to the category of the user equipment UE, the identifier is used to indicate that the common DCI belongs to the UE, and the common DCI It is used to indicate the resource occupied by the common message for the UE in the physical downlink shared channel PDSCH resource; A sending unit, configured to send the common DCI to the UE, and send the common message to the UE in resources occupied by the common message. 32. The base station according to claim 31, wherein when the identifier corresponds to the first type of UE, the identifier includes a system message radio network temporary identifier SI-RNTI, a paging radio network temporary identifier P-RNTI or random access response radio network temporary identifier RAR-RNTI; or, when the identifier corresponds to the second type of UE, the identifier includes the second type of system message radio network temporary identifier SSI- RNTI, the second type of paging radio network temporary identifier SP-RNTI or the second type of random access response radio network temporary identifier SRAR-RNTI.

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