Information transmission method and device

Abstract

The present application discloses an information transmission method and device, which are used to achieve that USSs on two carriers will not overlap or conflict in the time domain, thereby reducing the overhead on the terminal side. The present application provides an information transmission method, comprising: a user equipment UE determines the time domain monitoring position of a UE-specific search space USS on a first carrier and the time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; the UE monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitors the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an information transmission method and device. Background Art

[0002] In the Rel-17 dynamic spectrum sharing project, the scheduling of the primary cell (PCell) by the secondary cell (SCell) was studied. From the perspective of configuration flexibility and network deployment adaptability, it is allowed to configure the user equipment-specific search space (USS) on the SCell that schedules the PCell and the scheduled PCell. However, considering the complexity of the terminal, the capacity of the physical downlink control channel (PDCCH), and the detection of the USS on the SCell and PCell at the same time, there is currently no clear solution on how to detect the downlink control information (DCI) sent in the USS on the SCell used to schedule the PCell and the scheduled PCell.

[0003] In the prior art, the network side can configure multiple service cells for the terminal in order to increase the data transmission rate and improve the user experience. In the Rel-15 / 16 version of the new radio access technology (New RAT, NR) system, PCell can only be used as a scheduling carrier, that is, it is not allowed to be scheduled by SCell. In version 17 (Rel-17), it is determined to support SCell scheduling of PCell. In addition, USS is allowed to be configured on the scheduled PCell. Although the configuration problem of USS has been solved, there are currently different ideas on how to detect USS on PCell and SCell. There is no relevant solution for how to ensure that USS on PCell / PSCell and SCell do not appear at the same time.

[0004] In summary, in the current network, USS can only be configured and detected on the scheduled carrier, which restricts the flexibility and adaptability of network deployment. When PCell / PSCell is scheduled by SCell, USS is allowed to be configured on the scheduled carrier as well as the scheduling carrier. Considering that the physical downlink shared channel (PDSCH) is only transmitted on the scheduled carrier, the base station will not send two DCIs in different USSs at the same time. Therefore, when the terminal needs to monitor the USS on two carriers at the same time, it will increase the complexity of terminal-side blind detection. Summary of the invention

[0005] The embodiments of the present application provide an information transmission method and device to ensure that USSs on two carriers do not overlap or conflict in the time domain, thereby reducing the overhead on the terminal side.

[0006] On the terminal side, an information transmission method provided by an embodiment of the present application includes:

[0007] The user equipment UE determines a time domain monitoring position of a UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0008] The UE monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitors the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier.

[0009] Through the method, the UE determines the time domain monitoring position of the UE-specific search space USS on the first carrier and the time domain monitoring position of the USS on the second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; the UE monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and, according to the time domain monitoring position of the USS on the second carrier, monitors the USS on the second carrier, thereby achieving that the USSs on the two carriers will not overlap or conflict in the time domain, reducing the overhead on the terminal side and improving the user experience.

[0010] Optionally, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to a configuration of the network side or a predefined rule.

[0011] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0012] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, only the USS of the first carrier or the second carrier is monitored at the overlapping time domain monitoring position.

[0013] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with a delay until a time domain monitoring position is found that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier, at which the USS on the second carrier is monitored.

[0014] Optionally, monitoring is delayed only within one transmission cycle of a USS on the second carrier.

[0015] Optionally, according to the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

[0016] Optionally, the time domain monitoring position of the USS on the first carrier determined according to the USS monitoring pattern does not overlap with the time domain monitoring position of the USS on the second carrier.

[0017] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern, and in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

[0018] Accordingly, on the network side, an information transmission method provided by an embodiment of the present application includes:

[0019] Determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0020] Information transmission is performed according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier.

[0021] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0022] Optionally, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

[0023] Optionally, the method further includes: notifying the terminal of the USS monitoring pattern on the first carrier and / or the second carrier.

[0024] On the terminal side, an information transmission device provided by an embodiment of the present application includes:

[0025] A memory for storing program instructions;

[0026] The processor is used to call the program instructions stored in the memory and execute according to the obtained program:

[0027] Determine a time domain monitoring position of a user equipment UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0028] The USS on the first carrier is monitored according to the time domain monitoring position of the USS on the first carrier; and the USS on the second carrier is monitored according to the time domain monitoring position of the USS on the second carrier.

[0029] Optionally, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to a configuration of the network side or a predefined rule.

[0030] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0031] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, only the USS of the first carrier or the second carrier is monitored at the overlapping time domain monitoring position.

[0032] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with a delay until a time domain monitoring position is found that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier, at which the USS on the second carrier is monitored.

[0033] Optionally, monitoring is delayed only within one transmission cycle of a USS on the second carrier.

[0034] Optionally, according to the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

[0035] Optionally, the time domain monitoring position of the USS on the first carrier determined according to the USS monitoring pattern does not overlap with the time domain monitoring position of the USS on the second carrier.

[0036] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern, and in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

[0037] On the network side, an information transmission device provided in an embodiment of the present application includes:

[0038] A memory for storing program instructions;

[0039] The processor is used to call the program instructions stored in the memory and execute according to the obtained program:

[0040] Determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0041] Information transmission is performed according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier.

[0042] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0043] Optionally, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

[0044] Optionally, the processor is further configured to: notify a terminal of a USS monitoring pattern on the first carrier and / or the second carrier.

[0045] On the terminal side, another information transmission device provided in an embodiment of the present application includes:

[0046] A determining unit, configured to determine a time domain monitoring position of a user equipment UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0047] The monitoring unit is configured to monitor the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitor the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier.

[0048] On the network side, another information transmission device provided in an embodiment of the present application includes:

[0049] A first unit is configured to determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0050] The second unit is used to transmit information according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier.

[0051] Another embodiment of the present application provides a computing device, which includes a memory and a processor, wherein the memory is used to store program instructions, and the processor is used to call the program instructions stored in the memory, and execute any of the above methods according to the obtained program.

[0052] Another embodiment of the present application provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to enable the computer to execute any of the above methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of the USSs on the first carrier and the second carrier provided in an embodiment of the present application being transmitted on the first three OFDM symbols of each slot;

[0055] Figure 2 A schematic diagram of a terminal provided in an embodiment of the present application that attempts to detect USS on the first three symbols no longer according to the original configuration;

[0056] Figure 3 A schematic diagram of performing a certain time domain offset according to the actual transmission position of the USS on the first carrier provided in an embodiment of the present application;

[0057] Figure 4 A schematic diagram assuming that the USS monitoring period of the first carrier is 2 slots and the USS of the second carrier is 4 slots provided in the embodiment of the present application;

[0058] Figure 5 A schematic diagram of a USS monitoring pattern provided in an embodiment of the present application;

[0059] Figure 6 A schematic diagram of a flow chart of an information transmission method on a terminal side provided in an embodiment of the present application;

[0060] Figure 7 A schematic diagram of a flow chart of an information transmission method on the network side provided in an embodiment of the present application;

[0061] Figure 8 A schematic diagram of the structure of an information transmission device on the terminal side provided in an embodiment of the present application;

[0062] Fig. 9 A schematic diagram of the structure of an information transmission device on the network side provided in an embodiment of the present application;

[0063] Fig.10 A schematic diagram of the structure of another information transmission device on the terminal side provided in an embodiment of the present application;

[0064] Fig.11 A schematic diagram of the structure of another information transmission device on the network side provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0066] The embodiments of the present application provide an information transmission method and device to ensure that USSs on two carriers do not overlap or conflict in the time domain, thereby reducing the overhead on the terminal side.

[0067] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0068] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G system and 5G NR system, etc. These various systems include terminal equipment and network equipment.

[0069] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). The wireless terminal device can communicate with one or more core networks via the RAN. The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiated protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0070] The network device involved in the embodiments of the present application may be a base station, which may include multiple cells. Depending on the specific application scenario, the base station may also be called an access point, or may refer to a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or other names. The network device may be used to convert received air frames to and from Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application can be a network device (base transceiver station, BTS) in the global system for mobile communications (global system for mobile communications, GSM) or code division multiple access (code division multiple access, CDMA), or a network device (NodeB) in wide-band code division multiple access (WCDMA), or an evolved network device (evolutional node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station in the 5G network architecture (next generation system), or a home evolved node B (home evolved node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., but is not limited in the embodiments of the present application.

[0071] The following is a detailed description of each embodiment of the present application in conjunction with the accompanying drawings. It should be noted that the display order of the embodiments of the present application only represents the order of the embodiments, and does not represent the advantages and disadvantages of the technical solutions provided by the embodiments.

[0072] The embodiment of the present application realizes that the USS on the scheduling carrier and the scheduled carrier will not overlap or conflict in the time domain through explicit and / or implicit methods. The scheduling carrier is a carrier used to send a PDCCH that schedules a data channel on another carrier. The scheduled carrier refers to a carrier on which a data channel is scheduled through a PDCCH transmitted on another carrier or the carrier itself.

[0073] The technical solutions provided by the embodiments of the present application are described below from different aspects.

[0074] Terminal side:

[0075] The terminal detects and receives the USS at different time domain monitoring positions on the scheduling carrier (hereinafter also referred to as the first carrier) and the scheduled carrier (hereinafter also referred to as the second carrier) according to the configuration of the network side or the predefined rule. Specifically, it can be implemented by at least one of the following methods:

[0076] Method 1: Determine the USS time domain monitoring position on the second carrier through the USS configuration on the first carrier.

[0077] The first carrier and the second carrier are both configured with USS. When the monitoring positions of the USS of the first carrier and the second carrier overlap in the time domain, that is, at least one orthogonal frequency division multiplexing (OFDM) symbol overlaps, the terminal only monitors the USS of the first carrier (or the USS of the second carrier, that is, only monitors the USS of one of the carriers) at this moment. Among them, the USS is semi-statically configured through RRC signaling, that is, the UE already knows the time domain monitoring position of the USS before detecting and receiving the PDCCH. Based on this prior information, the terminal can know whether the monitoring positions of the USS on the first carrier and the second carrier overlap in the time domain.

[0078] When the monitoring positions of the USSs of the first carrier and the second carrier overlap in the time domain, the terminal determines the monitoring time domain monitoring position of the USS on the second carrier according to the USS configured on the first carrier.

[0079] For example, a time domain offset is performed according to the USS monitoring position on the first carrier, and it is ensured that the USS on the second carrier after the offset does not overlap with the USS on the first carrier in the time domain.

[0080] The time domain offset value is determined by predefinition or high-level signaling configuration, such as a slot-level offset, a cycle-level offset, or an OFDM symbol offset.

[0081] Method 2: When the USSs on the first carrier and the second carrier overlap in the time domain, the USS on the second carrier is delayed until a time domain monitoring position is found that can transmit the downlink control channel and does not overlap with the USS on the first carrier (i.e., the USS on one of the carriers is delayed for monitoring so that it does not overlap with the monitoring time of the USS on the other carrier).

[0082] The USS is configured on both the first carrier and the second carrier. When the monitoring positions of the USSs of the first carrier and the second carrier overlap in the time domain, that is, at least one OFDM symbol overlaps, the terminal only monitors the USS of the first carrier (or the USS of the second carrier, that is, only monitors the USS of one of the carriers) at this moment (that is, the overlapping time domain position).

[0083] When the monitoring positions of the USSs of the first carrier and the second carrier overlap in the time domain, the terminal does not monitor the USS on the second carrier at this moment (i.e., the overlapping time domain monitoring position), and monitors the USS on the second carrier at the nearest downlink symbol after this moment (i.e., does not monitor the USS of one of the carriers at the overlapping time domain monitoring position, but monitors it at the nearest downlink symbol thereafter).

[0084] Furthermore, the USS on the second carrier can only be delayed within its configured period. If the time domain monitoring position for transmitting the USS on the second carrier still cannot be found within a transmission period, no delay will be performed and the USS will be discarded (i.e., the UE no longer monitors the USS).

[0085] Method 3: Determine how to monitor USS on the first carrier and the second carrier according to the USS monitoring pattern (USS monitoring pattern) of the first carrier and / or the second carrier configured on the network side. Among them, regarding the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, it can be a USS monitoring pattern configured for the two carriers respectively, or it can be a USS monitoring pattern configured for only one of the carriers. Both methods can achieve that the USS on the two carriers do not overlap in the time domain.

[0086] The base station configures a USS monitoring pattern for the first carrier and / or the second carrier, and the USS monitoring pattern notifies the terminal of a time domain range in which the USS needs to be monitored on the first carrier and / or the second carrier.

[0087] The USS monitoring pattern of the first carrier and / or the second carrier ensures that the USS monitoring positions on the two carriers do not overlap in the time domain.

[0088] Furthermore, the USS monitoring pattern is effective only for USSs that conflict in the time domain (ie, overlap in the time domain monitoring positions) between the first carrier and the second carrier, and the terminal ignores the monitoring pattern for USS monitoring positions that do not conflict in the time domain.

[0089] Base station side:

[0090] The base station ensures that the USS monitoring positions configured on the first carrier and the second carrier do not overlap in the time domain by the following method.

[0091] Method 1: Determine the USS time domain monitoring position on the second carrier through the USS configuration on the first carrier.

[0092] Method 2: When the USSs on the first carrier and the second carrier overlap in the time domain, the USS on the second carrier is delayed until a time domain monitoring position is found that can transmit the downlink control channel and does not overlap with the USS on the first carrier.

[0093] Method 3: configure the first carrier and / or the second carrier to configure a USS monitoring pattern to inform the terminal how to monitor the USS on the first carrier and the second carrier.

[0094] Embodiment 1:

[0095] Assume that the PCell of the NR UE and the LTE base station are deployed on the same frequency band. In order to avoid interference from the Cell Reference Signal (CRS) of the LTE system, the base station (gNB) needs to avoid the resource elements (RE) occupied by the LTE CRS when sending the NR PDCCH. In order to ensure the flexibility of network deployment and scheduling, and reduce the blocking possibility of PDCCH on the NR PCell / PSCell, the SCell is allowed to schedule the PCell.

[0096] In this embodiment, it is assumed that USS is configured on both the scheduling SCell and the scheduled PCell / PSCell. Monitoring the USS on the scheduling carrier and the scheduled carrier at the same time will cause a huge burden on the terminal side. This embodiment implements the time division multiplexing (TDM) transmission of USS on the scheduling SCell and the scheduled PCell / PSCell through a configuration method.

[0097] In this embodiment, the USS time domain monitoring position on the second carrier is determined by USS configuration on the first carrier. The first carrier and the second carrier may be determined by Radio Resource Control (RRC) configuration or in a predefined manner.

[0098] In this embodiment, it is assumed that the first carrier is the SCell that schedules the PCell, and the second carrier is the scheduled PCell. When the first carrier and the second carrier are both configured with USS, and the monitoring positions of the USS of the first carrier and the second carrier overlap in the time domain, the terminal only monitors the USS on the first carrier at this moment, and determines the actual monitoring position of the USS on the second carrier based on the USS of the first carrier.

[0099] In this embodiment, it is assumed that the period of the USS on the first carrier and the USS on the second carrier are both 1, and the CORESET (control-resource set, a set of physical resource sets, consisting of multiple resource blocks (RBs) in the frequency domain and 1, 2 or 3 OFDM symbols in the time domain) associated with the USS is 3 OFDM symbols, that is, the USS on the first carrier and the second carrier are transmitted on the first three OFDM symbols of each slot, such as Figure 1 This embodiment assumes that the USS on the first carrier and the USS on the second carrier have different search space numbers.

[0100] In order to realize TDM transmission of USS on the first carrier and the second carrier, this embodiment determines the actual time domain monitoring position of USS transmission on the second carrier by the following method: performing time domain offset according to the USS monitoring position on the first carrier, and ensuring that the USS on the second carrier after the offset does not overlap with the USS on the first carrier in the time domain.

[0101] In this embodiment, it is assumed that the time domain offset value is 3 OFDM symbols. Figure 2 As shown, that is, the terminal no longer attempts to detect the USS on the first three symbols according to the original configuration, but detects the USS according to the actual time domain listening position after the shift.

[0102] Embodiment 2:

[0103] Assume that the PCell of the NR UE and the LTE base station are deployed on the same frequency band. To avoid CRS interference from the LTE system, the gNB needs to avoid the REs occupied by the LTE CRS when sending the NR PDCCH. To ensure the flexibility of network deployment and scheduling, and to reduce the PDCCH blockage on the NR PCell / PSCell, the SCell is allowed to schedule the PCell.

[0104] In this embodiment, it is assumed that USS is configured on both the scheduling SCell and the scheduled PCell / PSCell. Monitoring the USS on the scheduling carrier and the scheduled carrier at the same time will cause a huge burden on the terminal side. This embodiment implements TDM transmission of USS on the scheduling SCell and the scheduled PCell / PSCell through a configuration method.

[0105] In this embodiment, the USS time domain monitoring position on the second carrier is determined by configuring the USS on the first carrier. The first carrier and the second carrier can be determined by RRC configuration or a predefined method. In this embodiment, it is assumed that the first carrier is the SCell that schedules the PCell, and the second carrier is the scheduled PCell. When the first carrier and the second carrier are both configured with USS, and the monitoring positions of the USS of the first carrier and the second carrier overlap in the time domain, the terminal only monitors the USS on the first carrier at this moment, and determines the actual monitoring position of the USS on the second carrier based on the USS of the first carrier.

[0106] In this embodiment, it is assumed that the USS numbers on the first carrier and the second carrier are the same, and accordingly, the two have the same monitoring period and the same time domain monitoring position.

[0107] Similar to the method in Example 1, the USS on the second carrier determines the actual monitoring position according to the USS on the first carrier. The specific method is to perform a certain time domain offset according to the actual transmission position of the USS on the first carrier, such as Figure 3 The offset value (offset) is N slots or M symbols (symbol), and after the offset, it is ensured that the USS on the second carrier does not overlap with the USS on the first carrier in the time domain.

[0108] Embodiment 3:

[0109] Assume that the PCell of the NR UE and the LTE base station are deployed on the same frequency band. In order to avoid CRS interference from the LTE system, the gNB needs to avoid the REs occupied by the LTE CRS when sending the NR PDCCH. In order to ensure the flexibility of network deployment and scheduling, and to reduce the PDCCH collision probability (blocking possibility) on the NR PCell / PSCell, the SCell is allowed to schedule the PCell.

[0110] In this embodiment, it is assumed that USS is configured on both the scheduling SCell and the scheduled PCell / PSCell. Monitoring the USS on the scheduling carrier and the scheduled carrier at the same time will cause a huge burden on the terminal side. This embodiment implements TDM transmission of USS on the scheduling SCell and the scheduled PCell / PSCell through a configuration method.

[0111] In this embodiment, it is assumed that the first carrier is the SCell that schedules the PCell, and the second carrier is the scheduled PCell. When the first carrier and the second carrier are both configured with USS, and the monitoring positions of the USS of the first carrier and the second carrier overlap in the time domain, the terminal only monitors the USS on the first carrier at this moment, and delays the actual monitoring position of the USS on the second carrier. That is, the USS on the second carrier is monitored on the nearest downlink symbol after this moment. The first carrier and the second carrier can be determined by RRC configuration or predefined method. Figure 4 As a specific example. Figure 4 In the example, it is assumed that the USS monitoring period of the first carrier is 2 slots, and the USS of the second carrier is 4 slots. The USSs of the first carrier and the second carrier overlap in slot#1 and slot#4. At this time, the terminal detects the USS on the first carrier in slot#1 and slot#4, and delays the USS on the second carrier.

[0112] In this embodiment, the USS of the second carrier is delayed by one slot. Of course, the specific delay time may be N OFDM symbols, N slots, or N cycles, and this application does not impose any limitation.

[0113] It should be noted that the present application does not impose any limitation on various configurations such as the period of the USS on the first carrier and the second carrier.

[0114] Furthermore, the USS on the second carrier can only be delayed within its configured period. If the time domain monitoring position for transmitting the USS on the second carrier still cannot be found within a transmission period, no further delay is performed and the USS is discarded.

[0115] Embodiment 4:

[0116] Assume that the PCell of the NR UE and the LTE base station are deployed on the same frequency band. To avoid CRS interference from the LTE system, the gNB needs to avoid the REs occupied by the LTE CRS when sending the NR PDCCH. To ensure the flexibility of network deployment and scheduling, and to reduce the PDCCH blockage on the NR PCell / PSCell, the SCell is allowed to schedule the PCell.

[0117] In this embodiment, it is assumed that USS is configured on both the scheduling SCell and the scheduled PCell / PSCell. Monitoring the USS on the scheduling carrier and the scheduled carrier at the same time will cause a huge burden on the terminal side. This embodiment implements TDM transmission of USS on the scheduling SCell and the scheduled PCell / PSCell through a configuration method.

[0118] In this embodiment, the network side configures the first carrier and / or the second carrier USS monitoring pattern for the terminal to inform the terminal how to monitor the USS on the first carrier and the second carrier. Specifically, the base station configures the USS monitoring pattern for the first carrier and / or the second carrier, and the pattern informs the terminal of the time domain range in which the USS needs to be monitored on the carrier. The USS monitoring pattern of the first carrier and / or the second carrier ensures that the USS monitoring positions on the two carriers do not overlap in the time domain.

[0119] As a specific example, assume that the network side configures USS#1 on the first carrier and USS#2 on the second carrier. Additionally, USS monitoring patterns are configured for the first carrier and the second carrier, respectively. The terminal determines how to monitor USS on the first carrier and the second carrier according to the USS configuration and the USS monitoring pattern. The specific configuration method of the USS monitoring pattern can be implemented by, but not limited to, the following methods:

[0120] Method 1: Configure the starting slot and duration of the USS monitoring pattern, and specify whether to monitor or not monitor the USS during the time period.

[0121] Method 2: Configure the starting number of the monitoring location (MO, Monitoring Occasion) included in the USS monitoring pattern and the number of MOs included, and specify whether to monitor or not monitor the USS within the time period.

[0122] like Figure 5 As shown, the broken line shows the USS monitoring pattern.

[0123] Embodiment 5:

[0124] As described in the method of embodiment 4, a USS monitoring pattern is configured for the first carrier and / or the second carrier. The USSs on the first carrier and the second carrier have different periods.

[0125] Based on the method described in Embodiment 4, in this embodiment, the monitoring pattern is effective only when the USSs of the first carrier and the second carrier collide in the time domain.

[0126] In summary, see Figure 6 On the terminal side, an information transmission method provided by an embodiment of the present application includes:

[0127] S101. A user equipment UE determines a time domain monitoring position of a UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0128] S102. The UE monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitors the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier.

[0129] Through the method, the UE determines the time domain monitoring position of the UE-specific search space USS on the first carrier and the time domain monitoring position of the USS on the second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; the UE monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and, according to the time domain monitoring position of the USS on the second carrier, monitors the USS on the second carrier, thereby achieving that the USSs on the two carriers will not overlap or conflict in the time domain, reducing the overhead on the terminal side and improving the user experience.

[0130] Optionally, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to a configuration of the network side or a predefined rule.

[0131] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0132] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, only the USS of the first carrier or the second carrier is monitored at the overlapping time domain monitoring position.

[0133] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with a delay until a time domain monitoring position is found that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier, at which the USS on the second carrier is monitored.

[0134] Optionally, monitoring is delayed only within one transmission cycle of a USS on the second carrier.

[0135] Optionally, according to the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

[0136] Optionally, the time domain monitoring position of the USS on the first carrier determined according to the USS monitoring pattern does not overlap with the time domain monitoring position of the USS on the second carrier.

[0137] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern, and in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

[0138] Accordingly, see Figure 7 On the network side, an information transmission method provided by an embodiment of the present application includes:

[0139] S201. Determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0140] S202: Transmit information according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier.

[0141] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0142] Optionally, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

[0143] Optionally, the method further includes: notifying the terminal of the USS monitoring pattern on the first carrier and / or the second carrier.

[0144] On the terminal side, see Figure 8 , an information transmission device provided in an embodiment of the present application includes:

[0145] Memory 620, used to store program instructions;

[0146] The processor 600 is configured to call the program instructions stored in the memory and execute according to the obtained program:

[0147] Determine a time domain monitoring position of a user equipment UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0148] The USS on the first carrier is monitored according to the time domain monitoring position of the USS on the first carrier; and the USS on the second carrier is monitored according to the time domain monitoring position of the USS on the second carrier.

[0149] Optionally, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to a configuration of the network side or a predefined rule.

[0150] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0151] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, only the USS of the first carrier or the second carrier is monitored at the overlapping time domain monitoring position.

[0152] Optionally, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with a delay until a time domain monitoring position is found that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier, at which the USS on the second carrier is monitored.

[0153] Optionally, monitoring is delayed only within one transmission cycle of a USS on the second carrier.

[0154] Optionally, according to the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

[0155] Optionally, the time domain monitoring position of the USS on the first carrier determined according to the USS monitoring pattern does not overlap with the time domain monitoring position of the USS on the second carrier.

[0156] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern, and in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

[0157] The transceiver 610 is configured to receive and send data under the control of the processor 600 .

[0158] Among them, Figure 8 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 600 and various circuits of memory represented by memory 620 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 610 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 630 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0159] The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 when performing operations.

[0160] Optionally, the processor 600 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device).

[0161] On the network side, see Fig. 9 , an information transmission device provided in an embodiment of the present application includes:

[0162] Memory 520, used to store program instructions;

[0163] The processor 500 is configured to call the program instructions stored in the memory and execute according to the obtained program:

[0164] Determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0165] Information transmission is performed according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier.

[0166] Optionally, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier.

[0167] Optionally, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

[0168] Optionally, the processor 500 is further configured to: notify a terminal, through the transceiver 510, of a USS monitoring pattern on the first carrier and / or the second carrier.

[0169] The transceiver 510 is configured to receive and send data under the control of the processor 500 .

[0170] Among them, Fig. 9In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 510 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 when performing operations.

[0171] The processor 500 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD).

[0172] On the terminal side, see Fig.10 Another information transmission device provided in an embodiment of the present application includes:

[0173] A determining unit 11 is configured to determine a time domain monitoring position of a user equipment UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0174] The monitoring unit 12 is configured to monitor the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitor the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier.

[0175] When the determining unit 11 specifically determines the time domain monitoring position of the user equipment UE-specific search space USS on the first carrier and the time domain monitoring position of the USS on the second carrier, the determination may be performed according to the specific related processes described in the above method, which will not be repeated here.

[0176] Similarly, the monitoring unit 12 monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and the specific implementation process of monitoring the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier can also be determined according to the specific relevant processes described in the above method, which will not be repeated here.

[0177] On the network side, see Fig.11 Another information transmission device provided in an embodiment of the present application includes:

[0178] The first unit 21 is configured to determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier;

[0179] The second unit 22 is configured to transmit information according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier.

[0180] The specific process of the first unit 21 determining the time domain monitoring position of the user equipment specific search space USS on the first carrier and the time domain monitoring position of the USS on the second carrier can be determined according to the specific related processes described in the above method, which will not be repeated here.

[0181] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0182] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or 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 a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0183] The embodiment of the present application provides a computing device, which may be a desktop computer, a portable computer, a smart phone, a tablet computer, a personal digital assistant (PDA), etc. The computing device may include a central processing unit (CPU), a memory, an input / output device, etc. The input device may include a keyboard, a mouse, a touch screen, etc. The output device may include a display device, such as a liquid crystal display (LCD), a cathode ray tube (CRT), etc.

[0184] The memory may include a read-only memory (ROM) and a random access memory (RAM), and provides the processor with program instructions and data stored in the memory. In an embodiment of the present application, the memory may be used to store the program of any of the methods provided in the embodiments of the present application.

[0185] The processor calls the program instructions stored in the memory, and the processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained program instructions.

[0186] An embodiment of the present application provides a computer storage medium for storing computer program instructions used by the apparatus provided in the above-mentioned embodiment of the present application, which includes a program for executing any of the methods provided in the above-mentioned embodiment of the present application.

[0187] The computer storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drives (SSDs)), etc.

[0188] The method provided in the embodiment of the present application can be applied to a terminal device or a network device.

[0189] Among them, the terminal equipment may also be referred to as user equipment (User Equipment, referred to as "UE"), mobile station (Mobile Station, referred to as "MS"), mobile terminal (Mobile Terminal), etc. Optionally, the terminal may have the ability to communicate with one or more core networks via a radio access network (Radio Access Network, RAN). For example, the terminal may be a mobile phone (or called a "cellular" phone), or a computer with mobile properties, etc. For example, the terminal may also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device.

[0190] The network device may be a base station (e.g., an access point), which refers to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface. The base station may be used to convert received air frames to and from IP packets, and serve as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) network. The base station may also coordinate the attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, or a gNB in ​​a 5G system, etc. This is not limited in the embodiments of the present application.

[0191] The above method processing flow can be implemented by a software program, and the software program can be stored in a storage medium. When the stored software program is called, the above method steps are executed.

[0192] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0193] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0194] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0195] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0196] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An information transmission method, characterized in that: The method includes: The user equipment UE determines a time domain monitoring position of a UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; The UE monitors the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitors the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier; Wherein, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier; Alternatively, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with delay until a time domain monitoring position that can transmit the downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found to monitor the USS on the second carrier; Alternatively, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern; in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

2. The method according to claim 1, characterized in that: According to the configuration of the network side or a predefined rule, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

3. The method according to claim 2, characterized in that When the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS of the second carrier, only the USS of the first carrier or the second carrier is monitored at the overlapping time domain monitoring position.

4. The method according to claim 1, characterized in that The monitoring is delayed only within one transmission period of the USS on the second carrier.

5. The method according to claim 1, characterized in that According to the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

6. The method according to claim 5, characterized in that There is no overlap between the time domain monitoring position of the USS on the first carrier determined according to the USS monitoring pattern and the time domain monitoring position of the USS on the second carrier.

7. An information transmission method, characterized in that: The method includes: Determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; Transmitting information according to a time domain monitoring position of the USS on the first carrier and a time domain monitoring position of the USS on the second carrier; Wherein, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier; Alternatively, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

8. The method according to claim 7, characterized in that The method further includes: notifying the terminal of the USS monitoring pattern on the first carrier and / or the second carrier.

9. An information transmission device, characterized in that: The device includes: A memory for storing program instructions; The processor is used to call the program instructions stored in the memory and execute according to the obtained program: Determine a time domain monitoring position of a user equipment UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; monitoring the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitoring the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier; Wherein, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier; Alternatively, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with delay until a time domain monitoring position that can transmit the downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found to monitor the USS on the second carrier; Alternatively, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern; in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

10. The device according to claim 9, characterized in that According to the configuration of the network side or a predefined rule, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

11. The device according to claim 10, characterized in that When the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS of the second carrier, only the USS of the first carrier or the second carrier is monitored at the overlapping time domain monitoring position.

12. The device according to claim 9, characterized in that The monitoring is delayed only within one transmission period of the USS on the second carrier.

13. The device according to claim 9, characterized in that According to the USS monitoring pattern of the first carrier and / or the second carrier configured on the network side, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined.

14. The device according to claim 13, characterized in that There is no overlap between the time domain monitoring position of the USS on the first carrier determined according to the USS monitoring pattern and the time domain monitoring position of the USS on the second carrier.

15. An information transmission device, characterized in that: The device includes: A memory for storing program instructions; The processor is used to call the program instructions stored in the memory and execute according to the obtained program: Determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; Transmitting information according to a time domain monitoring position of the USS on the first carrier and a time domain monitoring position of the USS on the second carrier; Wherein, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier; Alternatively, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

16. The device according to claim 15, characterized in that The processor is further configured to: notify the terminal of the USS monitoring pattern on the first carrier and / or the second carrier.

17. An information transmission device, characterized in that: The device includes: A determining unit, configured to determine a time domain monitoring position of a user equipment UE-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; a monitoring unit, configured to monitor the USS on the first carrier according to the time domain monitoring position of the USS on the first carrier; and monitor the USS on the second carrier according to the time domain monitoring position of the USS on the second carrier; Wherein, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier; Alternatively, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is not monitored at the time domain monitoring position, and the USS on the second carrier is monitored with delay until a time domain monitoring position that can transmit the downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found to monitor the USS on the second carrier; Alternatively, when the time domain monitoring position of the USS on the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier are determined according to the USS monitoring pattern; in the time domain monitoring positions without overlapping, the terminal ignores the USS monitoring patterns of the first carrier and the second carrier.

18. An information transmission device, characterized in that: The device includes: A first unit is configured to determine a time domain monitoring position of a user equipment-specific search space USS on a first carrier and a time domain monitoring position of a USS on a second carrier; wherein the time domain monitoring position of the USS on the first carrier does not overlap with the time domain monitoring position of the USS on the second carrier; A second unit is used to transmit information according to the time domain monitoring position of the USS on the first carrier and the time domain monitoring position of the USS on the second carrier; Wherein, when the time domain monitoring position of the USS of the first carrier overlaps with the time domain monitoring position of the USS on the second carrier, the time domain monitoring position of the USS on the second carrier is determined according to the time domain monitoring position of the USS on the first carrier; Alternatively, when the time domain monitoring position of the USS of the first carrier that is initially determined overlaps with the time domain monitoring position of the USS on the second carrier, the USS on the second carrier is delayed until a time domain monitoring position that can transmit a downlink control channel and does not overlap with the time domain monitoring position of the USS on the first carrier is found, so that the time domain monitoring position of the USS on the first carrier that is finally determined does not overlap with the time domain monitoring position of the USS on the second carrier.

19. A computer storage medium, characterized in that: The computer storage medium stores computer executable instructions, and the computer executable instructions are used to enable the computer to execute the method according to any one of claims 1 to 8.

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