Uplink resource authorization method, device and system

Abstract

The uplink resource authorization method comprises the steps that a terminal receives configuration information from network equipment, and the configuration information comprises information of a first uplink resource and information of a second uplink resource; and the terminal searches the downlink control channel in the search space to obtain the authorization information. The search space comprises a first control channel candidate set when the downlink control channel bears the authorization information of the first (or second) uplink resource, and comprises a second control channel candidate set when the downlink control channel bears the authorization information of the second (or first) uplink resource and / or the authorization information of the downlink resource. The first control channel candidate set and the second control channel candidate set are the same, or the first control channel candidate set has an offset relative to the second control channel candidate set, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set. According to the method, the number of blind detection times of the terminal is reduced by searching space sharing or reducing the number of control channel candidates when authorization information for bearing uplink resources is carried.

Description

[0001] This application is a divisional application. The application number of the original application is 201710459797.5, and the original application date is June 16, 2017. The entire content of the original application is incorporated into this application by reference. Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and in particular to a method, device and system for authorizing uplink resources. Background Art

[0003] With the continuous growth of smart terminal users, user traffic and data throughput are increasing, and the demand for spectrum resources is also increasing. However, wireless spectrum resources are in short supply, and it is difficult to find continuous large bandwidth resources for mobile communications. Therefore, carrier aggregation (CA) technology is introduced to aggregate multiple continuous or discontinuous spectrum resources (e.g., carriers) to meet the demand for large bandwidth in mobile communications, while also improving the utilization rate of scattered spectrum.

[0004] At present, in CA technology, the terminal can support the aggregation of multiple carriers, where the number of uplink carriers is not greater than the number of downlink carriers. That is, for a carrier, if it is configured for uplink transmission, it is necessary to configure the carrier for downlink transmission as well. It can be seen that the use of the uplink resources of a carrier is bound to the use of the downlink resources of the carrier.

[0005] However, due to the limitation of terminal transmission power, uplink and downlink coverage are usually not balanced, and uplink coverage is weaker than downlink coverage. With the introduction of high frequency bands, the imbalance of uplink and downlink coverage is more obvious. In addition, from the perspective of business, there is also an imbalance in uplink and downlink business demand, and downlink business demand is often higher than uplink business demand. Therefore, it is hoped that uplink and downlink decoupling can be used to adapt to the imbalance of uplink and downlink coverage or uplink and downlink business. When uplink and downlink are decoupled, for a carrier, the use of its uplink resources is no longer bound to the use of the downlink resources of the carrier. At this time, there may be a carrier that only has uplink resources, or is only used for uplink transmission. Therefore, there are no downlink resources on the carrier to schedule the uplink resources of the carrier. At this time, cross-carrier scheduling technology can be used, that is, other carriers are used to schedule the uplink resources of the carrier. At this time, the terminal needs to perform a large number of blind detections, resulting in high power consumption. Summary of the invention

[0006] The embodiments of the present application provide a method, device and system for configuring a search space, in order to reduce the number of blind detections of a terminal, thereby reducing the power consumption of the terminal.

[0007] In a first aspect, a method for authorizing uplink resources is provided, comprising: a terminal receives configuration information from a network device, the configuration information including information of a first uplink resource and information of a second uplink resource; the terminal searches a downlink control channel in a search space to obtain authorization information sent by the network device to the terminal, the authorization information including authorization information of the first uplink resource, authorization information of the second uplink resource, and authorization information of a downlink resource used to carry a downlink control channel. Wherein, the search space includes a first control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource, and the search space includes a second control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource and / or the authorization information of the downlink resource; or, the search space includes a first control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource, and the search space includes a second control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource and / or the authorization information of the downlink resource. And the first control channel candidate set and the second control channel candidate set are the same, or the first control channel candidate set has an offset relative to the second control channel candidate set, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set.

[0008] In a second aspect, a method for authorizing uplink resources is provided, comprising: a network device sends configuration information to a terminal, the configuration information including information of a first uplink resource and information of a second uplink resource; the network device sends a downlink control channel on a search space of a downlink control channel, the downlink control channel including authorization information for the terminal, the authorization information including authorization information of the first uplink resource, authorization information of the second uplink resource, and at least one of authorization information of a downlink resource used to carry the downlink control channel. Wherein, the search space includes a first control channel candidate set when the downlink control channel carries authorization information of the first uplink resource, and includes a second control channel candidate set when the search space carries authorization information of the second uplink resource and / or authorization information of the downlink resource; or, the search space includes a first control channel candidate set when the downlink control channel carries authorization information of the second uplink resource, and includes a second control channel candidate set when the search space carries authorization information of the first uplink resource and / or authorization information of the downlink resource. The first control channel candidate set is the same as the second control channel candidate set, or the first control channel candidate set is offset relative to the second control channel candidate set, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set.

[0009] In a third aspect, the present application provides an uplink resource authorization device for a terminal, comprising: a unit or means for executing each step of the above first aspect.

[0010] In a fourth aspect, the present application provides an uplink resource authorization device for use in a network device, including: a unit or means for executing each step of the above second aspect.

[0011] In a fifth aspect, the present application provides an uplink resource authorization device, comprising at least one processing element and at least one storage element, wherein the at least one storage element is used to store programs and data, and when the device is used for a terminal, the at least one processing element is used to execute the method provided in the first aspect of the present application; when the device is used for a network device, the at least one processing element is used to execute the method provided in the second aspect of the present application.

[0012] In a sixth aspect, the present application provides an uplink resource authorization device, comprising at least one processing element (or chip) for executing the method of the first aspect or the second aspect above.

[0013] In a seventh aspect, the present application provides a program, which, when executed by a processor, is used to execute the method of the first aspect or the second aspect above.

[0014] In an eighth aspect, a program product is provided, such as a computer-readable storage medium, comprising the program of the seventh aspect.

[0015] When the first control channel candidate set and the second control channel candidate set are the same, in the presence of cross-carrier scheduling in the prior art, it is equivalent to scheduling a shared search space for the two carriers. There is no longer an offset between the two control channel candidate sets, but one control channel candidate set is directly used to carry the authorization information, thereby reducing the number of blind detections by the terminal.

[0016] When the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set, in the presence of cross-carrier scheduling in the prior art, although there is an offset between the two control channel candidate sets, the number of control channel candidates in one of the control channel candidate sets is reduced, thereby reducing the number of blind detections by the terminal.

[0017] The first uplink resource is a supplementary uplink (SUL) resource. The SUL resource refers to an uplink resource that is only used for transmission of the current communication standard.

[0018] Optionally, the first uplink resource and the downlink resource for carrying the downlink control channel are one carrier resource. In this case, the scheduling of the first uplink resource is local carrier scheduling, and the scheduling of the second uplink resource is cross-carrier scheduling.

[0019] Optionally, the second uplink resource and the downlink resource for carrying the downlink control channel are one carrier resource. In this case, the scheduling of the first uplink resource is cross-carrier scheduling, and the scheduling of the second uplink resource is local carrier scheduling.

[0020] Optionally, the first uplink resource, the second uplink resource and the downlink resource for carrying the downlink control channel are one carrier resource. In this case, the scheduling of the first uplink resource and the scheduling of the second uplink resource are both local carrier scheduling, and there is no cross-carrier scheduling.

[0021] In the combination of the above three carrier resources, the existing pairing mode of uplink and downlink resources is broken, the first uplink resource and the downlink resource of the carrier where the first uplink resource is located can be decoupled, and the second uplink resource and the downlink resource of the carrier where the second uplink resource is located can also be decoupled. And the uplink resources and downlink resources of different carriers can be paired, so as to achieve more flexible carrier resource pairing.

[0022] Optionally, the information of the uplink resource is an index or a frequency number. For example, the information of the first uplink resource is the index of the first uplink resource, and the information of the second uplink resource is the index of the second uplink resource. Alternatively, the information of the first uplink resource is the frequency number of the first uplink resource, and the information of the second uplink resource is the frequency number of the second uplink resource. Indicating resources by means of indexes or frequency numbers can reduce the amount of information transmitted on the air interface and reduce air interface resource consumption.

[0023] Optionally, when the terminal activates the first uplink resource and the second uplink resource at different times, that is, the first uplink resource and the second uplink resource are not activated at the same time, the authorization information includes authorization information of the first uplink resource; or the authorization information includes authorization information of the second uplink resource and / or authorization information of the downlink resource.

[0024] The authorization information is located in downlink control information (DCI), and when the first uplink resource and the second uplink resource are not activated at the same time, the DCI includes a carrier indication field, and the carrier indication field is used to indicate the first uplink resource or the second uplink resource. In another implementation, the DCI does not include a carrier indication field, and the authorization information is an authorization for the activated uplink resource (e.g., the first uplink resource or the second uplink resource).

[0025] Optionally, the network device may instruct the terminal to switch uplink resources. At this time, the above method also includes: the network device sends a switching indication to the terminal device, and the switching indication is used to instruct the terminal to switch the activated uplink resource from the first uplink resource to the second uplink resource or from the second uplink resource to the first uplink resource. Correspondingly, the terminal receives the switching indication and switches the uplink resource according to the switching indication, for example, switching the activated uplink resource from the first uplink resource to the second uplink resource or from the second uplink resource to the first uplink resource. At this time, the use of the terminal uplink resources can be adjusted in time when the terminal moves to obtain better communication quality.

[0026] Optionally, the switching indication is a carrier indication field, and the carrier indication field is used to indicate the first uplink resource or the second uplink resource. When the uplink resource indicated by the carrier indication field is different from the currently activated uplink resource, the terminal switches the activated uplink resource to the uplink resource indicated by the carrier indication field. The switching method reuses the carrier indication field, and only needs to change the value in the carrier indication field in the scheduling information when switching, so that the switching can be completed quickly, and there is no need to re-establish the RRC connection, and there is no service interruption.

[0027] Optionally, the switching indication is group common scheduling information, which includes multiple bits, each bit corresponding to a terminal, and is used to indicate whether to switch the uplink resource of the terminal corresponding to the bit. In one implementation, the number of bits of the group common scheduling information can be sent by the network device to the terminal. This method can complete uplink resource switching for multiple terminals in the group at the same time, and the overall switching efficiency is high.

[0028] Optionally, the switching indication is a media access control layer signaling, which includes a plurality of bits, each bit corresponding to an uplink resource, and is used to indicate whether to activate the uplink resource corresponding to the bit.

[0029] Each of the above switching methods does not require re-establishing a radio resource control (RRC) connection and does not cause service interruption, thereby quickly completing uplink resource switching.

[0030] Before and after the switching, the network device may send authorization information to the terminal at the request of the terminal or actively.

[0031] Optionally, the terminal may activate the first uplink resource and the second uplink resource simultaneously, and in this case, the authorization information includes at least one of the authorization information of the first uplink resource, the authorization information of the second uplink resource, and the authorization information of the downlink resource.

[0032] The number of control channel candidates in the first control channel candidate set may be predefined or configured to the terminal by the network device. When the number of control channel candidates in the first control channel candidate set is configured to the terminal by the network device, the above method further includes: the network device sends a configuration parameter to the terminal, and the configuration parameter is used to configure the number of control channel candidates in the first control channel candidate set. Correspondingly, the terminal receives the configuration parameter from the network device, and then determines the number of control channel candidates in the first control channel candidate set according to the configuration parameter.

[0033] Optionally, the configuration parameter is a proportional factor, which is used to reflect the ratio between the number of control channel candidates in the first control channel candidate set and the number of control channel candidates in the second control channel candidate set, or the ratio between the number of control channel candidates in the second control channel candidate set and the number of control channel candidates in the first control channel candidate set.

[0034] Optionally, the first uplink resource is a low-frequency resource, the second uplink resource is a high-frequency resource, and the downlink resource is a high-frequency downlink resource. The low-frequency resource is a resource less than or equal to 3 GHz, and the high-frequency resource is a resource greater than 3 GHz. In this case, the first uplink resource is a SUL resource. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a communication scenario provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of a carrier scheduling method provided in an embodiment of the present application;

[0037] Figure 3 A schematic diagram of a search space of a control channel on an existing serving cell configured with cross-carrier scheduling;

[0038] Figure 4 A schematic diagram of an uplink resource authorization method provided in an embodiment of the present application;

[0039] Figure 5 A schematic diagram of a coverage scenario of different frequency bands provided in an embodiment of the present application;

[0040] Figure 6 A schematic diagram of a scheduling and search space provided in an embodiment of the present application;

[0041] Figure 7 Another scheduling and search space schematic diagram provided for an embodiment of the present application;

[0042] Figure 8 A schematic diagram of an uplink resource switching method provided in an embodiment of the present application;

[0043] Fig. 9 A schematic diagram of group public scheduling information provided in an embodiment of the present application;

[0044] Fig.10 A schematic diagram of another uplink resource switching method provided in an embodiment of the present application;

[0045] Fig.11 A schematic diagram of a MAC layer signaling provided in an embodiment of the present application;

[0046] Fig.12 A schematic diagram of another uplink resource switching method provided in an embodiment of the present application;

[0047] Fig.13 Another scheduling and searching space schematic diagram provided for an embodiment of the present application;

[0048] Fig.14Another scheduling and searching space schematic diagram provided for an embodiment of the present application;

[0049] Fig.15 Another scheduling and searching space schematic diagram provided for an embodiment of the present application;

[0050] FIG16( a) is a schematic diagram of distribution of a control channel in a search space provided in an embodiment of the present application;

[0051] FIG16( b ) is a schematic diagram of distribution of another control channel in a search space provided in an embodiment of the present application;

[0052] Fig.17 A schematic diagram of an uplink resource authorization device provided in an embodiment of the present application;

[0053] Fig.18 A schematic diagram of a frequency domain resource processing device provided in an embodiment of the present application;

[0054] Fig.19 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0055] Fig. 20 A schematic diagram of the structure of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] Below, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0057] 1) Terminal, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to users, such as handheld devices with wireless connection functions, vehicle-mounted devices, etc. At present, some examples of terminals are: mobile phones, tablet computers, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0058] 2) Network equipment is equipment that provides services to terminals in the network, such as radio access network (RAN) equipment. At present, some examples of RAN equipment are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wifi) access point (AP), etc. In addition, in a network structure, RAN can include centralized unit (CU) nodes and distributed unit (DU) nodes. This structure splits the protocol layer of the eNB in ​​the long term evolution (LTE) system, places some of the functions of the protocol layer in the CU for centralized control, and distributes some or all of the remaining functions of the protocol layer in the DU, which is centrally controlled by the CU.

[0059] 3) "Multiple" means two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0060] Please refer to Figure 1 , which is a schematic diagram of a communication scenario provided by an embodiment of the present application. Figure 1 As shown, the terminal 110 accesses the wireless network through the network device 120 to obtain services of the external network (such as the Internet) through the wireless network, or communicates with other terminals through the wireless network. The terminal 110 initially accesses the network device 120, and the cell accessed by the terminal is the serving cell of the terminal, which is responsible for the radio resource control (RRC) communication between the terminal 110 and the terminal 110.

[0061] In the CA technology, the network device 120 can also configure other service cells for the terminal. For example, when the RRC connection is reconfigured, at least one service cell can be added for the terminal 110. The added service cell is a secondary cell (SCell). At this time, the service cell initially accessed by the terminal 110 is a primary cell (PCell). The added SCell can be a cell of the network device 120 or a cell of another network device, and no limitation is made here. In addition, in addition to adding an SCell for the terminal when the RRC connection is reconfigured, the network device 120 can also modify or release the SCell for the terminal when the RRC connection is reconfigured.

[0062] PCell is responsible for RRC communication with the terminal, and the corresponding CC is the primary component carrier (PCC). SCell can be added during RRC connection reconfiguration to provide additional wireless resources for the terminal. The CC corresponding to SCell is the secondary component carrier (SCC). The number of downlink SCCs and uplink SCCs can be the same or different. At present, the number of uplink CCs is not greater than the number of downlink CCs. If the uplink resources of a CC are used, the downlink resources of the CC are also used. In other words, for a CC, if the CC is used for uplink transmission, it is necessary to configure the CC to also be used for downlink transmission. That is, the use of the uplink resources of the carrier is bound to the use of the downlink resources of the carrier.

[0063] However, due to the limitation of terminal transmission power, uplink and downlink coverage are usually not balanced, and uplink coverage is weaker than downlink coverage. In addition, from the business perspective, there is also an imbalance in uplink and downlink business demands, and downlink business demands are often higher than uplink business demands. Therefore, it is hoped that uplink and downlink decoupling can be used to adapt to the imbalance of uplink and downlink coverage or uplink and downlink services. When uplink and downlink are decoupled, for a carrier, the use of its uplink resources is no longer bound to the use of the downlink resources of the carrier. At this time, there may be a carrier that only has uplink resources, or is only used for uplink transmission. Therefore, there are no downlink resources on the carrier to schedule the uplink resources of the carrier. At this time, cross-carrier scheduling technology can be used, that is, other carriers are used to schedule the uplink resources of the carrier. At this time, the terminal needs to perform a large number of blind detections, resulting in high power consumption.

[0064] Combine the following Figure 2 Describes cross-carrier scheduling, where Figure 2 A schematic diagram of a carrier scheduling method provided in an embodiment of the present application. Figure 2As shown, the network device 120 can configure three carrier scheduling modes for the terminal 110: current carrier scheduling, cross-carrier scheduling, and cross-carrier scheduling. The figure describes CC1, CC2, and CC3 as examples. On CC1 scheduled by the current carrier, the downlink control channel is used to schedule the data channel of the current carrier, where the downlink control channel is, for example, a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH), and PDCCH is taken as an example here. The data channel includes, for example, a physical uplink shared channel (PUSCH) and / or a physical downlink shared channel (PDSCH). That is to say, the downlink control channel of CC1 is used to carry the uplink authorization and / or downlink authorization information of this carrier, the uplink authorization information is used to indicate the PUSCH resources of this carrier, and the downlink authorization information is used to indicate the PDSCH resources of this carrier, wherein the uplink authorization and / or downlink authorization information is carried in the downlink control information (downlink control information, DCI) carried by the downlink control channel. At this time, the downlink control channel of CC1 carries the DCI used to schedule this carrier, and the terminal blindly detects the downlink control channel of CC1 to obtain the DCI used to schedule this carrier, so as to obtain the uplink authorization and / or downlink authorization information of this carrier. The CC1 scheduled by this carrier can be called S-CC. On the cross-carrier scheduled CC2, the downlink control channel is used to schedule the data channels of other carriers. That is to say, the downlink control channel of CC2 is used to carry both the uplink authorization and / or downlink authorization information of this carrier and the uplink authorization and / or downlink authorization information of other carriers, wherein the uplink authorization and / or downlink authorization information of this carrier is used to indicate the PUSCH and / or PDSCH resources of this carrier, and the uplink authorization and / or downlink authorization information of other carriers is used to indicate the PUSCH and / or PDSCH resources of other carriers. At this time, the downlink control channel of CC2 carries both the DCI for scheduling this carrier and the DCI for scheduling other carriers. The terminal blindly detects the downlink control channel of CC2 to obtain the DCI for scheduling this carrier and the DCI for scheduling other carriers, and then obtains the uplink authorization and / or downlink authorization information of this carrier and other carriers. The cross-carrier scheduled CC2 can be called X-CC. The scheduling of the data channel of CC3 scheduled across carriers is completed by other carriers (for example, by CC2), so the terminal does not blindly detect PDCCH on this CC3.

[0065] The terminal's blind detection of PDCCH is achieved by searching the search space. The search space is a set of control channel candidates. Taking the set of PDCCH candidates as an example, the search space at aggregation level L Defined as a set of PDCCH candidates, and the search space The control channel element (CCE) occupied by the PDCCH candidate m in can be expressed as follows: If the terminal configures a carrier indicator field (CIF) on the serving cell that is monitoring the PDCCH, the presence of the CIF field indicates the presence of cross-carrier scheduling, that is, the serving cell schedules other serving cells across carriers, then m′=m+M (L) ·n CI , where n CI is the value of CIF; if CIF is not configured on the serving cell, m′=m.

[0066] Among them, Y k Refers to the starting CCE number of the search space, N CCE,k is the total number of CCEs in subframe k, i = 0, ..., L-1, and m = 0, ..., M (L) -1. M (L) The number of PDCCH candidates to be monitored in the search space is related to the aggregation level, as shown in Table 1. The aggregation level L is, for example, in the set {1, 2, 4, 8}, which is only an example and is not intended to limit the present application. With the development of technology, the aggregation level may have other values.

[0067] Table 1

[0068]

[0069] It can be seen that if the terminal is configured with cross-carrier scheduling (ie, CIF exists), the serving cell of the cross-carrier scheduling adds an offset M when calculating the search space. (L) ·n CI Therefore, the maximum number of PDCCH candidates that the terminal needs to blindly detect is also doubled. Figure 2 In CC2, the downlink control channel of the serving cell needs to carry both the DCI for scheduling the current carrier (called the first DCI) and the DCI for scheduling other carriers (called the second DCI). The PDCCH candidates for carrying the second DCI are offset from the PDCCH candidates for carrying the first DCI, but the number remains the same. Therefore, the maximum number of PDCCH candidates that the terminal needs to blindly detect is doubled. Please refer to Figure 3, which is a schematic diagram of an existing search space for a control channel on a serving cell configured with cross-carrier scheduling. Figure 3 As shown, taking the number of PDCCH candidates for the PDCCH candidate set for carrying the first DCI and the PDCCH candidate set for carrying the second DCI as 16 as an example, the terminal needs to perform blind detection up to 64 (16*2+16*2) times at most. The reason for 16*2 is that in a specific transmission mode (TM), the terminal has two possible DCI formats. When the DCI cannot be detected in one DCI format, it needs to fall back to another DCI format for blind detection.

[0070] The above search spaces are divided into common search space and UE-specific search space. The common search space is used to transmit cell-level public control information, such as control information related to paging, random access response, broadcast control channel (BCCH), etc. This information is the same for terminals in the cell. The UE-specific search space is used to transmit control information related to downlink scheduling (DL-SCH) and / or uplink scheduling (UL-SCH), that is, control information related to downlink authorization and / or uplink authorization. The search space in the following embodiments of the present application refers to the UE-specific search space.

[0071] The embodiment of the present application takes into account the problem that the number of terminal blind detections is too large, causing terminal energy waste, and proposes the following solution.

[0072] Please refer to Figure 4 , which is a schematic diagram of an uplink resource authorization method provided in an embodiment of the present application. Figure 4 As shown, the method comprises the following steps:

[0073] S410: The network device sends configuration information to the terminal, where the configuration information includes information about the first uplink resource and information about the second uplink resource.

[0074] It can be seen that the configuration information is used to configure the first uplink resource and the second uplink resource for the terminal. The terminal receives the configuration information from the network device, and determines the first uplink resource and the second uplink resource configured by the network device for the terminal according to the configuration information. In this way, when the terminal receives the authorization information of the first uplink resource from the network device, it can use the authorized resources in the first uplink resource for uplink transmission. When the terminal receives the authorization information of the second uplink resource from the network device, it can use the authorized resources in the second uplink resource for uplink transmission. When the terminal is configured with CA of the first uplink resource and the second uplink resource, the terminal can use the authorized resources in the first uplink resource and the authorized resources in the second uplink resource for uplink transmission when receiving the authorization information of the first uplink resource and the authorization information of the second uplink resource from the network device.

[0075] S420: The network device sends a downlink control channel in the search space of the downlink control channel, where the downlink control channel includes authorization information for the terminal, where the authorization information may include authorization information of the first uplink resource, authorization information of the second uplink resource, and at least one of authorization information of the downlink resource for carrying the downlink control channel.

[0076] S430: The terminal searches the downlink control channel of the serving cell to obtain the above authorization information.

[0077] S440: The terminal sends uplink data on the resources authorized by the authorization information.

[0078] The authorization information in the embodiment of the present application may also be referred to as scheduling information, which is used to schedule resources so as to authorize resources to the terminal through the authorization information. The uplink authorization information includes an uplink authorization (UL grant), and the downlink authorization information includes a downlink authorization (DL grant). The scheduling information is usually carried in the DCI or implemented in the form of DCI.

[0079] The search space includes the first control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource, and includes the second control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource and / or the authorization information of the downlink resource. Alternatively, the search space includes the first control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource, and includes the second control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource and / or the authorization information of the downlink resource.

[0080] The first control channel candidate set is the same as the second control channel candidate set, or the first control channel candidate set is offset relative to the second control channel candidate set, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set.

[0081] In one implementation, the authorization information of the first uplink resource and the authorization information of the second uplink resource can share the search space of the downlink control channel. That is, the search space of the downlink control channel includes the same control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource and when it carries the authorization information of the second uplink resource. When the first uplink resource and the second uplink resource are respectively the first uplink CC and the second uplink CC, compared with the prior art, in the case of cross-carrier scheduling, there is no longer an offset between the two control channel candidate sets, but one control channel candidate set is directly used to carry the authorization information of the first uplink CC and the second uplink CC, thereby reducing the number of terminal blind detections.

[0082] In another implementation, the authorization information of the first uplink resource (or the second uplink resource) and the authorization information of the downlink resource for carrying the downlink control channel can share the search space of the downlink control channel. That is, the search space includes the same control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource (or the second uplink resource) and when it carries the authorization information of the downlink resource. When the first uplink resource and the downlink resource belong to different CCs, compared with the prior art, in the case of cross-carrier scheduling, there is no longer an offset between the two control channel candidate sets, but a control channel candidate set is directly used to carry the authorization information of the first uplink CC and the downlink CC, thereby reducing the number of blind detections of the terminal.

[0083] Of course, these two situations can be combined, that is, the authorization information of the first uplink resource, the authorization information of the second uplink resource, and the authorization information of the downlink resource used to carry the downlink control channel can share the search space of the downlink control channel. That is, the search space includes the same control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource, carries the authorization information of the second uplink resource, and carries the authorization information of the downlink resource.

[0084] In another implementation, the search space of the downlink control channel includes a first control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource, which has an offset relative to the second control channel candidate set included when the downlink control channel carries the authorization information of the second uplink resource, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set. Alternatively, the search space of the downlink control channel includes a first control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource, which has an offset relative to the second control channel candidate set included when the downlink control channel carries the authorization information of the first uplink resource, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set. Compared to the prior art, in the case of cross-carrier scheduling, although there is an offset between the two control channel candidate sets, the number of control channel candidates in one of the control channel candidate sets is reduced, thereby reducing the number of blind detections by the terminal.

[0085] The above first uplink resource is a supplementary uplink (SUL) resource, such as a SUL carrier or frequency, wherein the SUL resource refers to only uplink resources used for transmission of the current communication format. For example, for one carrier, only uplink resources are used for transmission. For example, in the fifth generation (5G) mobile communication system, also known as the New Radio (NR) communication system, carrier A is only used for uplink transmission of NR, and the carrier is not used for downlink transmission or is used for downlink transmission of the long term evolution (LTE) communication system but not for downlink transmission of NR, then the carrier A is a SUL resource.

[0086] The above uplink resources can be understood as the part of the carrier (including the carrier in the non-CA scenario and the CC in the CA scenario) used for uplink transmission or the part of the service cell (including the service cell in the CA scenario and the service cell in the non-CA scenario) used for uplink transmission. The CC in the CA scenario can be a primary CC or a secondary CC, and the service cell in the CA scenario can be a PCell or an Scell. The uplink resource can also be called an uplink carrier. Correspondingly, the part of the carrier or the service cell used for downlink transmission can be understood as a downlink resource or a downlink carrier. For example, in a frequency division duplex (FDD) system, the frequency resources on the carrier used for uplink transmission can be understood as the uplink resources or the uplink carrier; the frequency resources used for downlink transmission can be understood as the downlink resources or the downlink carrier. For another example, in a time division duplex (TDD) system, the time domain resources on the carrier used for uplink transmission can be understood as the uplink resources or the uplink carrier; the time domain resources used for downlink transmission can be understood as the downlink resources or the downlink carrier.

[0087] In one implementation, the first uplink resource and the downlink resource of the carrier where the first uplink resource is located can be decoupled, and the second uplink resource and the downlink resource of the carrier where the second uplink resource is located can also be decoupled. That is, the uplink carrier and the downlink carrier can be configured independently. The first uplink resource and the downlink resource used to carry the downlink control channel can be configured as one carrier resource, in which case the scheduling of the first uplink resource is current carrier scheduling, and the scheduling of the second uplink resource is cross-carrier scheduling. Alternatively, the second uplink resource and the downlink resource used to carry the downlink control channel can be configured as one carrier resource, in which case the scheduling of the first uplink resource is cross-carrier scheduling, and the scheduling of the second uplink resource is current carrier scheduling. Alternatively, the first uplink resource, the second uplink resource, and the downlink resource used to carry the control channel can be configured as one carrier resource, in which case the scheduling of the first uplink resource and the scheduling of the second uplink resource are both current carrier scheduling, and there is no cross-carrier scheduling.

[0088] Optionally, the number of control channel candidates in the first control channel candidate set and the number of control channel candidates in the second control channel candidate set can be configured to the terminal by the network device, or can be predefined. Alternatively, the number of control channel candidates in the second control channel candidate set can be determined in the same manner as in the prior art, and the first control channel candidate set is configured to the terminal by the network device, specifically, the network device can send a configuration parameter to the terminal, and the configuration parameter can be a proportional factor, which is used to reflect the ratio between the number of control channel candidates in the first control channel candidate set and the number of control channel candidates in the second control channel candidate set, or the ratio between the number of control channel candidates in the second control channel candidate set and the number of control channel candidates in the first control channel candidate set.

[0089] In the above step S410, the network device may send the configuration information to the terminal via high-level signaling. The high-level signaling is, for example, an RRC message. Alternatively, the network device may send the configuration information to the terminal via a system message. This application does not limit this.

[0090] In addition, the information of the first uplink resource and the information of the second uplink resource in the configuration information may be an index of the first uplink resource and an index of the second uplink resource. Alternatively, the information of the first uplink resource and the information of the second uplink resource may be a frequency number of the first uplink resource and a frequency number of the second uplink resource. Indicating resources by means of indexes or frequency numbers may reduce the amount of information transmitted on the air interface and reduce air interface resource consumption. The information of the first uplink resource and the information of the second uplink resource may also be in other forms, which are not limited in the present application, as long as the first uplink resource and the second uplink resource can be indicated.

[0091] The network device can configure the first uplink resource and the second uplink resource for the terminal according to the capability of the terminal. Therefore, before step S410, the network device can receive the capability information reported by the terminal. The capability information can be, for example, the terminal's support capability for uplink resources, that is, how many uplink resources the terminal can support to be configured, for example, how many uplink CCs the terminal can support to be configured. After the network device receives the capability information reported by the terminal, it can obtain whether the terminal supports the configuration of multiple uplink resources according to the capability information. If supported, the first uplink resource and the second uplink resource can be configured for the terminal. Of course, more uplink resources can also be configured. Optionally, the capability information can also include the combination capability of the frequency points, that is, the resources of which frequency points can be combined to be jointly configured to the terminal, and then the network device configures the uplink resources for the terminal according to the combination capability of the frequency points.

[0092] After the terminal receives the configuration information sent by the network device, it can determine the first uplink resource and the second uplink resource according to the configuration information. Optionally, the terminal can choose to activate one of the uplink resources for communication. When uplink CA is supported, the network device instructs the terminal to activate another uplink resource to provide additional uplink resources. Alternatively, the network device can send indication information to the terminal to instruct the terminal to activate one or all of the uplink resources for uplink transmission. Then, the network device can send authorization information of the first uplink resource and / or the second uplink resource to the terminal, so that the terminal can obtain the resources authorized to the terminal by the network device according to the authorization information, and use the authorized resources to transmit uplink data.

[0093] In the above steps S420-S440, the network device carries the authorization information of the first uplink resource in the first DCI and sends it to the terminal, and carries the authorization information of the second uplink resource in the second DCI and sends it to the terminal. At this time, the network device sends the first DCI or the second DCI through the downlink control channel of the serving cell, or sends both the first DCI and the second DCI. When the authorization information only includes the authorization information of the first uplink resource, the terminal can obtain the authorized resource on the first uplink resource according to the authorization information of the first uplink resource, and use the authorized resource to transmit uplink data. When the authorization information only includes the authorization information of the second uplink resource, the terminal can obtain the authorized resource on the second uplink resource according to the authorization information of the second uplink resource, and use the authorized resource to transmit uplink data. When the authorization information includes both the authorization information of the first uplink resource and the authorization information of the second uplink resource, the terminal supports uplink CA and can use the authorized resource on the first uplink resource indicated by the authorization information of the first uplink resource and the authorized resource on the second uplink resource indicated by the authorization information of the second uplink resource to transmit uplink data.

[0094] In addition, when the authorization information includes authorization information of downlink resources, the terminal can receive downlink data on the resources specified by the authorization information.

[0095] The downlink control channel can be PDCCH or ePDCCH. The terminal receives the downlink control channel by searching the search space, which includes multiple control channel candidates. The terminal detects the control channel candidates in turn until the DCI is detected or until all control channel candidates are detected. When the control channel carries multiple DCIs, the network device can notify the terminal of the number of DCIs carried by the control channel, so that the terminal can stop detecting when the corresponding number of DCIs is detected, so as to further reduce the number of blind detections.

[0096] Before the introduction of NR, mobile communication systems used spectrum resources in lower frequency bands, for example, bands below 3 GHz (including 3 GHz). NR introduced spectrum resources in higher frequency bands, for example, spectrum resources above 3 GHz. However, the higher the frequency band, the lower the wireless transmission performance, for example, the greater the path loss. In order to improve the uplink coverage capability of the NR network, the NR network can reuse the frequency bands of existing networks, such as the frequency bands in the LTE network, and decouple the uplink and downlink, and reuse the frequency band only in the uplink.

[0097] The following takes the frequency band of 1.8 GHz as an example. Figure 5 Describe it. Among them, Figure 5 A schematic diagram of a coverage scenario of different frequency bands provided in an embodiment of the present application. Figure 5As shown, the NR network reuses the 1.8GHz frequency band of the LTE network in the uplink, hereinafter referred to as the 1.8GHz frequency band. The 3.5GHz frequency band is used in the downlink, hereinafter referred to as the 3.5GHz frequency band. NR uplink and LTE uplink share the same frequency band resources, which not only makes full use of the uplink spectrum resources, but also improves the uplink coverage of NR. At this time, the 1.8GHz frequency band is a SUL resource, and the 3.5GHz frequency band schedules the uplink resources of the 1.8GHz frequency band across carriers, or the 1.8GHz frequency band and the 3.5GHz frequency band form a carrier resource. At this time, the above method can be used to reduce the number of blind detections of the terminal. The following can take this scenario as an example to describe the application of the above embodiments in this scenario.

[0098] First, a scenario is described in which only one uplink resource is activated at the same time, that is, a scenario in which the first uplink resource and the second uplink resource are not activated at the same time. For example, when the terminal does not support uplink CA, the first uplink resource and the second uplink resource will not be activated at the same time.

[0099] The terminal resides on the 3.5 GHz downlink resource (or downlink carrier) of the NR and uses the 1.8 GHz uplink resource (or uplink carrier). At this time, the uplink grant (UL grant) of the 1.8 GHz uplink resource needs to be transmitted through the control channel on the 3.5 GHz downlink resource.

[0100] In traditional carrier design, the 3.5GHz uplink resource and the 3.5GHz downlink resource belong to the same carrier. When the terminal is in the 3.5GHz uplink coverage area, the uplink authorization of the 3.5GHz uplink resource is transmitted through the control channel on the 3.5GHz downlink resource. At this time, the carrier scheduling is adopted. When the terminal moves out of the uplink coverage area and switches to the 1.8GHz uplink coverage area, the uplink authorization of the 1.8GHz uplink resource is transmitted through the control channel on the 3.5GHz downlink resource. At this time, cross-carrier scheduling is adopted.

[0101] In a carrier design with uplink and downlink decoupling, the 1.8 GHz uplink resource and the 3.5 GHz downlink resource belong to the same carrier resource. When the terminal is in the 1.8 GHz uplink coverage area, the uplink authorization of the 1.8 GHz uplink resource is transmitted through the control channel on the 3.5 GHz downlink resource. At this time, the current carrier scheduling is adopted. As for the 3.5 GHz uplink resource, it can belong to the same carrier resource as the 1.8 GHz uplink resource and the 3.5 GHz downlink resource. At this time, the authorization of the 3.5 GHz uplink resource is also implemented through the current carrier scheduling. If the 3.5 GHz uplink resource and the 3.5 GHz downlink resource do not belong to the same carrier resource, then at this time, the authorization of the 3.5 GHz uplink resource is implemented through cross-carrier scheduling.

[0102] Since only one uplink resource is activated at a time by the terminal, that is, the terminal transmits information on only one uplink resource at a time, the terminal can use the same control channel candidate set to carry the uplink information of the 1.8 GHz uplink resource and the 3.5 GHz uplink resource when using the 1.8 GHz uplink resource and the 3.5 GHz uplink resource. The uplink information transmitted by the terminal may include at least one of the following information: information on the PUSCH, information on the PUCCH, sounding reference signal (SRS) and information on the physical random access channel (PRACH).

[0103] Please refer to Figure 6 , which is a schematic diagram of a scheduling and search space provided in an embodiment of the present application. Figure 6 As shown, the dotted line represents an unactivated uplink resource, the solid line represents an activated uplink resource, the solid arrow represents scheduling, and the dotted arrow represents that the resources on both sides of the arrow belong to one carrier resource. In the box on the left, the 3.5GHz uplink resource is activated, and the control channel on the 3.5GHz downlink resource is used to carry the authorization information of the 3.5GHz uplink resource; in the box on the right, the 1.8GHz uplink resource is activated, and the control channel on the 3.5GHz downlink resource is used to carry the authorization information of the 1.8GHz uplink resource. And no matter which uplink resource the control channel on the 3.5GHz downlink resource carries the authorization information of, the control channel candidate set of the search space is the same. Also, taking the control channel candidate set including 16 control channel candidates as an example, the maximum number of blind detections of the terminal is only 32 at this time, which reduces the number of blind detections compared to the prior art and saves the power consumption of the terminal.

[0104] The network device can configure a mode of multiplexing CIF for the terminal. In order to distinguish it from the existing CIF, the CIF field can be called a new carrier indicator field (NCIF). Let the index of the 3.5GHz uplink resource configured by the network device be "0" and the index of the 1.8GHz uplink resource be "1". Then the value of the NCIF field in the DCI carrying the uplink authorization of the 3.5GHz uplink resource is "0", and the value of the NCIF field in the DCI carrying the uplink authorization of the 3.5GHz uplink resource is "1". It can be seen that NCIF is used to indicate the first uplink resource or the second uplink resource, and its value can be the information of the first uplink resource or the information of the second uplink resource. Then the terminal can determine whether the uplink authorization is for the first uplink resource or the second uplink resource according to the value of the NCIF field.

[0105] Please refer to Figure 7 , which is another scheduling and search space schematic diagram provided in an embodiment of the present application. Figure 7 The scheduling method and search space in Figure 6 Same. The difference is that if the network device does not configure the terminal to reuse CIF, then there is no CIF in the DCI that carries the uplink grant of 1.8GHz or 3.5GHz uplink resources, and the uplink grant is for the activated uplink resource. For example, if the currently activated uplink resource is 1.8GHz, the uplink grant is for the 1.8GHz uplink resource.

[0106] The uplink resource activated by the terminal can be switched, for example, from the first uplink resource to the second uplink resource, or from the second uplink resource to the first uplink resource. Figure 4 , the above method may also include:

[0107] S450: The network device sends a switching indication to the terminal, where the switching indication is used to instruct the terminal to switch the activated uplink resource from the first uplink resource to the second uplink resource or from the second uplink resource to the first uplink resource.

[0108] The terminal receives the switching instruction and performs the following operations:

[0109] S460: The terminal switches the activated uplink resource from the first uplink resource to the second uplink resource or from the second uplink resource to the first uplink resource according to the switching instruction.

[0110] The switching method can be implemented by the above multiplexing CIF domain mode. That is, the switching indication is the above CIF. When the uplink resource indicated by the CIF is different from the currently activated uplink resource, the activated uplink resource is switched to the uplink resource indicated by the CIF. For example, the currently activated uplink resource is a 3.5GHz uplink resource, the CIF domain is "1", and "1" is the index of the 1.8GHz uplink resource, then the terminal deactivates the 3.5GHz uplink resource and activates the 1.8GHz uplink resource to achieve the switching of the uplink resource.

[0111] Please refer to Figure 8 , which is a schematic diagram of an uplink resource switching method provided in an embodiment of the present application. In this embodiment, 1.8 GHz uplink resources and 3.5 GHz uplink resources are used as examples for description, and the terminal completes RRC connection establishment on 3.5 GHz downlink resources and 3.5 GHz uplink resources. Figure 8 As shown, the method comprises the following steps:

[0112] S810: The terminal reports capability information, where the capability information is used to indicate the terminal's support capability for uplink resources.

[0113] The network device receives the capability information and executes the following step S820.

[0114] S820: The network device configures a first uplink resource and a second uplink resource for the terminal according to the capability information, which are a 1.8 GHz uplink resource and a 3.5 GHz uplink resource, respectively, wherein the index of the 3.5 GHz uplink resource is "0" and the index of the 1.8 GHz uplink resource is "1".

[0115] S830: The network device sends configuration information to the terminal, where the configuration information is used to configure the first uplink resource and the second uplink resource for the terminal, that is, includes the index of the first uplink resource and the index of the second uplink resource. The configuration information may be an RRC message.

[0116] The terminal receives the configuration information, and learns according to the configuration information that the terminal is configured with the first uplink resource and the second uplink resource.

[0117] S840: The network device determines to switch the uplink resource of the terminal from the second uplink resource to the first uplink resource.

[0118] For example, the terminal reports a measurement report to the network device, and the measurement report shows that the channel quality of the terminal on the 3.5 GHz uplink resource is less than or equal to the threshold. For example, the reference signal received power (RSRP) on the 3.5 GHz uplink resource is less than or equal to the RSRP threshold, which means that the terminal is about to move out of the coverage of the 3.5 GHz uplink resource, and the network device determines to switch the uplink resource of the terminal from 3.5 GHz to 1.8 GHz.

[0119] For another example, if the network device measures that the rate of the terminal's uplink data is less than the rate threshold, it means that the terminal is about to move out of the coverage of the 3.5 GHz uplink resource, and the network device determines to switch the terminal's uplink resource from 3.5 GHz to 1.8 GHz.

[0120] S850: The network device sends scheduling information to the terminal, where the scheduling information is, for example, DCI. The value of CIF in the scheduling information is "1".

[0121] Optionally, the scheduling information may also include a scheduling delay K1 to indicate that the terminal can transmit uplink data on the 1.8 GHz uplink resource after a time K1 after receiving the scheduling information, that is, complete the uplink resource switching before the scheduling delay K1. After the switching, the authorization information includes the authorization information of the 1.8 GHz uplink resource.

[0122] Optionally, the scheduling information may not include the scheduling delay K1, but default or predefine the terminal to complete the uplink resource switching within the switching time K2 after receiving the switching indication. Alternatively, the terminal may be configured through an RRC message to complete the uplink resource switching within the switching time K3.

[0123] In addition, the switching time K2 may be predefined or the switching time K3 may be configured, and the scheduling delay K1 may be carried in the scheduling information. In this case, K1 is greater than or equal to K2, or K1 is greater than or equal to K3.

[0124] S860: The terminal blindly detects scheduling information on the downlink control channel and performs uplink transmission on the resources authorized in the blindly detected scheduling information. When the CIF values ​​in the two subsequent scheduling information change, the terminal switches the uplink resources.

[0125] For example, if the uplink resource activated before switching is a 3.5 GHz uplink resource, and the uplink resource activated after switching is a 1.8 GHz uplink resource, then before switching, the terminal transmits at least one of PUSCH, PUCCH, SRS, and PRACH on the 3.5 GHz uplink resource, and does not transmit any information or only transmits SRS and / or PRACH on the 1.8 GHz uplink resource. After switching, the terminal transmits at least one of PUSCH, PUCCH, SRS, and PRACH on the 1.8 GHz uplink resource, and does not transmit any information or only transmits SRS and / or PRACH on the 3.5 GHz uplink resource.

[0126] In the above switching method, the switching can be completed quickly as long as the value in the CIF in the scheduling information is changed when switching, and there is no need to re-establish the RRC connection and no service interruption.

[0127] Uplink resource switching can also be achieved through group common scheduling information, such as group common DCI. The so-called group common scheduling information means that the scheduling information is valid for all terminals in the terminal group. Please refer to Fig. 9 , which is a schematic diagram of a group common scheduling information provided by an embodiment of the present application. Fig. 9 As shown, the group of public scheduling information includes multiple bits, each bit corresponds to a terminal, and the value of each bit is used to indicate whether the corresponding terminal needs to switch uplink resources. Among them, the number of bits of the group of public scheduling information can be configured by the network device and sent to the terminal through RRC signaling. Here, taking the group of public scheduling information including 5 bits as an example, the 5 bits correspond to terminals 1 to 5 respectively, and the first bit value is "1", indicating that the uplink resource of terminal 1 needs to be switched. Of course, "0" can also be used to indicate switching, and this application does not limit it.

[0128] Please refer to Fig.10, which is a schematic diagram of another uplink resource switching method provided in an embodiment of the present application. The method includes steps S1010 to S1040, and Figure 8 Steps S810 to S840 of the illustrated embodiment are similar and will not be described in detail herein, except for steps S850 - S860 and S1050 - S1060.

[0129] S1050: The network device sends group common scheduling information to the terminal, wherein the group common scheduling information has the structure described above, and one bit is used to indicate whether the terminal performs uplink resource switching. The value of the bit corresponding to the terminal is set to "1".

[0130] S1060: The terminal switches uplink resources.

[0131] Optionally, the terminal may detect the group common scheduling information in a time unit that is preset or configured by the network device, such as a time slot or a mini-time slot.

[0132] The switching of uplink resources can also be implemented through media access control (MAC) layer signaling, such as MAC control element (MACCE). Fig.11 , which is a schematic diagram of a MAC layer signaling provided in an embodiment of the present application. Fig.11 As shown, the MAC layer signaling includes multiple bits, each bit corresponds to an uplink resource, and the value of each bit is used to indicate whether the corresponding uplink resource is activated. Here, the MAC layer signaling includes 8 bits as an example, in which there can be at least one reserved bit (R), and the other bits except the reserved bit correspond to an uplink resource respectively. For example, from right to left, except for the reserved bit, they correspond to uplink resources C1 to C7 respectively, where C1 represents a 1.8 GHz uplink resource, and the value of the bit corresponding to C1 is "1", which is used to indicate the activation of the 1.8 GHz uplink resource. At this time, the values ​​of other bits are all "0". Of course, "0" can also be used to indicate activation, and this application does not limit it. At this time, the values ​​of other bits are "1".

[0133] Please refer to Fig.12 , which is a schematic diagram of another uplink resource switching method provided in an embodiment of the present application. The method includes steps S1210 to S1240, and Figure 8 Steps S810 to S840 of the illustrated embodiment are similar and will not be described in detail herein, except for steps S850 - S860 and S1250 - S1260.

[0134] S1250: The network device sends a MAC layer signaling to the terminal, wherein the MAC layer signaling has the structure described above, and one of the bits is used to indicate the uplink resource to be activated by the terminal. The value of the bit corresponding to the uplink resource is set to "1".

[0135] S1260: The terminal deactivates the uplink resources currently in use, activates the uplink resources activated by the MAC layer signaling, and implements uplink resource switching.

[0136] Before and after the switching, the network device can send authorization information to the terminal at the request of the terminal or actively. The method for sending the authorization information and the search space of the downlink control channel carrying the authorization information are the same as those described in the above embodiment and will not be repeated here.

[0137] Each of the above switching methods does not require re-establishing an RRC connection and does not cause service interruption, thereby quickly completing uplink resource switching.

[0138] Next, a scenario in which the first uplink resource and the second uplink resource can be activated simultaneously is described. For example, when the terminal supports uplink CA, the first uplink resource and the second uplink resource can be activated simultaneously.

[0139] The terminal resides on the 3.5 GHz downlink resource (or downlink carrier) of the NR and uses the 1.8 GHz uplink resource (or uplink carrier). At this time, the uplink grant (UL grant) of the 1.8 GHz uplink resource needs to be transmitted through the control channel on the 3.5 GHz downlink resource.

[0140] In traditional carrier design, the 3.5GHz uplink resource and the 3.5GHz downlink resource belong to the same carrier. When the terminal is in the 3.5GHz uplink coverage area, the uplink authorization of the 3.5GHz uplink resource is transmitted through the control channel on the 3.5GHz downlink resource. At this time, the carrier scheduling is adopted. When the terminal moves out of the uplink coverage area and switches to the 1.8GHz uplink coverage area, the uplink authorization of the 1.8GHz uplink resource is transmitted through the control channel on the 3.5GHz downlink resource. At this time, cross-carrier scheduling is adopted.

[0141] In a carrier design with uplink and downlink decoupling, the 1.8 GHz uplink resource and the 3.5 GHz downlink resource belong to the same carrier resource. When the terminal is in the 1.8 GHz uplink coverage area, the uplink authorization of the 1.8 GHz uplink resource is transmitted through the control channel on the 3.5 GHz downlink resource. At this time, the current carrier scheduling is adopted. As for the 3.5 GHz uplink resource, it can belong to the same carrier resource as the 1.8 GHz uplink resource and the 3.5 GHz downlink resource. At this time, the authorization of the 3.5 GHz uplink resource is also implemented through the current carrier scheduling. If the 3.5 GHz uplink resource and the 3.5 GHz downlink resource do not belong to the same carrier resource, then at this time, the authorization of the 3.5 GHz uplink resource is implemented through cross-carrier scheduling.

[0142] Since 1.8 GHz is not used for downlink transmission or the downlink resources of 1.8 GHz are used by LTE, that is, 1.8 GHz is a SUL resource, there is no cross-carrier scheduling of 1.8 GHz downlink resources. Therefore, the number of control channel candidates can be reduced in the configuration of the cross-carrier scheduling search space, thereby reducing the number of terminal blind detections. Please refer to Fig.13 , which is another scheduling and search space schematic diagram provided by the embodiment of the present application. Fig.13 As shown, the solid line represents activated uplink resources, the solid arrow represents scheduling, and the dotted arrow represents that the resources on both sides of the arrow belong to one carrier resource. Fig.13 The number of control channel candidates for 1.8 GHz is less than that for 3.5 GHz, for example, reduced to 10. Since only cross-carrier uplink scheduling is configured, there is a CIF in the DCI where the uplink grant is located, but there is no CIF in the DCI where the downlink grant is located.

[0143] For the above scenario where only one uplink resource is activated at the same time, the above method of reducing the number of control channel candidates may also be used. When the number of control channel candidates is reduced to 0, it is consistent with the search space sharing method described above.

[0144] For the scenario in which the first uplink resource and the second uplink resource can be activated at the same time in this scenario, the number of control channel candidates for the first uplink resource can also be reduced to 0, that is, it can be achieved by adopting a shared search space method.

[0145] Please refer to Fig.14 , which is another scheduling and search space schematic diagram provided by the embodiment of the present application. Fig.14 As shown in the figure, the solid line represents the activated uplink resources, the solid arrow represents the scheduling, and the dotted arrow represents that the resources on both sides of the arrow belong to one carrier resource. Figure 6The description is similar to that of , except that the authorization information carried by the control channel on the 3.5 GHz downlink resource can include both the 1.8 GHz uplink resource and the 3.5 GHz uplink resource authorization information. Since only cross-carrier uplink scheduling is configured, there is a CIF in the DCI where the uplink authorization is located, but there is no CIF in the DCI where the downlink authorization is located.

[0146] Please refer to Fig.15 , which is another scheduling and search space schematic diagram provided by the embodiment of the present application. Fig.15 As shown in the figure, the solid line represents the activated uplink resources, the solid arrow represents the scheduling, and the dotted arrow represents that the resources on both sides of the arrow belong to the same carrier resource. Fig.13 The difference shown is that the 3.5 GHz downlink resource and the 1.8 GHz uplink resource belong to one carrier resource, and the 3.5 GHz downlink resource schedules the 3.5 GHz uplink resource across carriers. At this time, the number of control channel candidate sets for scheduling the 3.5 GHz uplink resource is 10. Fig.15 As shown, since the base station has not reconfigured the index information of the 3.5GHz uplink resource and the 1.8GHz uplink resource, when the control channel of the 3.5GHz downlink resource schedules the 1.8GHz uplink resource in this carrier, the CIF in the DCI where the uplink authorization is located is 1; when the control channel of the 3.5GHz downlink resource schedules the 3.5GHz uplink resource across carriers, the CIF in the DCI where the uplink authorization is located is 0. After the base station reconfigures the index of the 3.5GHz uplink resource to 1 and the index of the 1.8GHz uplink resource to 0, when the control channel of the 3.5GHz downlink resource schedules the 1.8GHz uplink resource in this carrier, the CIF in the DCI where the uplink authorization is located is 1; when the control channel of the 3.5GHz downlink resource schedules the 3.5GHz uplink resource across carriers, the CIF in the DCI where the uplink authorization is located is 0.

[0147] The specific uplink resource authorization process is similar to the above embodiment. For example, the terminal completes the RRC connection establishment on the 3.5GHz downlink resource and the 3.5GHz uplink resource. After the network device receives the capability information reported by the terminal, it configures the first uplink resource and the second uplink resource for the terminal according to the capability information, which are 1.8GHz uplink resource and 3.5GHz uplink resource respectively. Among them, the index of the 3.5GHz uplink resource is "0" and the index of the 1.8GHz uplink resource is "1". The network device sends the information of the configured uplink resources to the terminal so that the terminal knows the configured uplink resources. Afterwards, the network device can send authorization information to the terminal at the request of the terminal or actively, where the search space of the control channel carrying the authorization information can be Figure 4The shared search space in the illustrated embodiment or the search space with reduced number of control channel candidates for 1.8 GHz or 3.5 GHz uplink resource scheduling can be specifically referred to the above embodiment and will not be described in detail here.

[0148] It can be seen that when only one uplink resource is activated at a time by the terminal, the authorization information includes the authorization information of the activated uplink resource, that is, the authorization information of the first uplink resource or the second uplink resource. When the terminal is activated by multiple uplink resources at a time, that is, the first uplink resource and the second uplink resource can be activated at the same time, the authorization information includes the authorization information of the activated uplink resource, that is, the authorization information of the first uplink resource and / or the second uplink resource. In addition, the authorization information may also include the authorization information of the downlink resource, so that the terminal can perform downlink transmission.

[0149] In the above embodiments, when multiple uplink resources can be activated at the same time, for example, when the first uplink resource and the second uplink resource can be activated at the same time, the network device can determine whether to use the search space sharing technology according to the load. That is to say, the network device can determine whether to schedule the first uplink resource and the second uplink resource in the same control channel candidate set according to the load, that is, whether to use the same control channel candidate set to carry the authorization information of the first uplink resource and the second uplink resource. The load can be reflected by the utilization rate of the downlink resource block (resource block, RB) or the RB resource utilization rate of various downlink channels, and can also be reflected by the number of terminals. When the load is less than or equal to the first preset value, the first uplink resource and the second uplink resource are scheduled in the same control channel candidate set; when the load is greater than or equal to the second preset value, the first uplink resource and the second uplink resource are scheduled in different control channel candidate sets, and there is an offset between the control channel candidate sets, and the number of control channel candidates for scheduling the first uplink resource is less than the number of control channel candidates for scheduling the second uplink resource.

[0150] When the network device finds that the load of the service cell (for example, the service cell corresponding to the 3.5GHz downlink resource) is small, for example, the number of terminals served is small or the downlink resource utilization rate is low, the probability that the CCE in the control channel candidate for 3.5GHz downlink scheduling at each aggregation level is used by other terminals is relatively low. Therefore, when the probability of conflict is relatively low, the network device can place the control channel for 1.8GHz uplink resource scheduling on the unused control channel candidate for 3.5GHz scheduling for transmission. Please refer to Figure 16 (a), which is a schematic diagram of the distribution of a control channel in the search space provided in an embodiment of the present application. The six control channel candidates 0 to 5 for 3.5GHz scheduling with an aggregation level of 2 are not used by other terminals. At this time, the PDCCH for carrying 3.5GHz uplink authorization information can be transmitted on control channel candidate 0, and the PDCCH for carrying 1.8GHz uplink authorization information can be transmitted on one of the remaining control channel candidates, for example, on control channel candidate 3.

[0151] When the network device finds that the load of the service cell (for example, the service cell corresponding to the 3.5GHz downlink resource) is large, for example, the number of terminals served is large or the downlink resource utilization rate is high, the probability that the CCE in the control channel candidate for 3.5GHz downlink scheduling at each aggregation level is used by other terminals is relatively high. Therefore, when the probability of conflict is relatively high, the network device can place the control channel for 1.8GHz uplink resource scheduling on the offset control channel candidate for transmission. Please refer to Figure 16 (b), which is a schematic diagram of the distribution of another control channel in the search space provided in an embodiment of the present application. The six control channel candidates 0 to 5 for 3.5GHz scheduling with an aggregation level of 2 may be used by other terminals. At this time, the PDCCH for carrying 3.5GHz uplink authorization information can be transmitted on control channel candidate 5, and the PDCCH for carrying 1.8GHz uplink authorization information can be transmitted on a control channel candidate in the control channel candidate set for 1.8GHz, for example, on control channel candidate 1 in the control channel candidate set for 1.8GHz. The number of control channel candidates for the control channel candidate set for 1.8 GHz is less than the number of control channel candidates for the control channel candidate set for 3.5 GHz, and there is a certain offset.

[0152] The above method can be implemented in a corresponding device, which is described below in conjunction with the accompanying drawings.

[0153] Please refer to Fig.17 , which is a schematic diagram of an uplink resource authorization device provided in an embodiment of the present application. The device 1700 is used in a terminal, such as Fig.17As shown, the device 1700 includes units or means for executing each step performed by the terminal in any of the above method embodiments, and the detailed descriptions of these steps can be applied to the present device embodiment. For example, the device 1700 includes a search unit 1710 and a communication unit 1720. The communication unit 1720 is used to control the communication between the terminal and the network device, and the communication unit 1720 can receive and send information through the interface (e.g., air interface) between the terminal and the network device. The interface here is a logical concept, and the corresponding logical unit needs to be set in implementation to meet the protocol requirements of the corresponding interface.

[0154] The search unit 1710 is used to search the downlink control channel in the search space to obtain the authorization information sent by the network device to the terminal, and the authorization information includes at least one of the authorization information of the first uplink resource, the authorization information of the second uplink resource, and the authorization information of the downlink resource used to carry the downlink control channel. The search space includes the first control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource, and the search space includes the second control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource and / or the authorization information of the downlink resource, or the search space includes the first control channel candidate set when the downlink control channel carries the authorization information of the second uplink resource, and the search space includes the second control channel candidate set when the downlink control channel carries the authorization information of the first uplink resource and / or the authorization information of the downlink resource. The first control channel candidate set and the second control channel candidate set are the same, or the first control channel candidate set has an offset relative to the second control channel candidate set, and the number of control channel candidates in the first control channel candidate set is less than the number of control channel candidates in the second control channel candidate set.

[0155] The descriptions about the search space, the first uplink resource and the second uplink resource, and the information of the first uplink resource and the information of the second uplink resource are the same as those in the above embodiments and will not be repeated here.

[0156] Optionally, the terminal may further include a switching unit 1730. When the communication unit 1720 receives a switching indication, the switching unit 1730 is configured to switch the activated uplink resource from the first uplink resource to the second uplink resource or from the second uplink resource to the first uplink resource.

[0157] The description of the switching indication is the same as that in the above embodiment and will not be repeated here.

[0158] It should be understood that the division of the various units of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these units can all be implemented in the form of software calling through processing elements; they can also be all implemented in the form of hardware; some units can also be implemented in the form of software calling through processing elements, and some units can be implemented in the form of hardware. For example, the search unit 1710 can be a separately established processing element, or it can be integrated in a certain chip of the terminal. In addition, it can also be stored in the memory of the terminal in the form of a program, and called and executed by a certain processing element of the terminal. The implementation of other units is similar. In addition, all or part of these units can be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, the steps of the above method or the above units can be completed by the hardware integrated logic circuit in the processor element or the instructions in the form of software. In addition, the above communication unit is a unit that controls communication, and can receive information sent by the network device or send information to the network device through the transceiver of the terminal, such as the antenna and the radio frequency device.

[0159] For example, the above units may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASIC), or one or more digital singnal processors (DSP), or one or more field programmable gate arrays (FPGA). For another example, when a certain unit above is implemented in the form of a processing element scheduler, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0160] Please refer to Fig.18 , which is a schematic diagram of a frequency domain resource processing device provided in an embodiment of the present application. The device 1800 is used in a network device, such as Fig.18As shown, the device 1800 includes units or means for executing each step performed by the network device in any of the above method embodiments, and the detailed descriptions of these steps can be applied to the present device embodiment. The device includes a generation unit 1810 and a communication unit 1820. Among them, the communication unit 1820 is used to control the communication with the network device, and can receive and send messages through the interface (e.g., air interface) between the network device and the terminal. The interface here is a logical concept, and the corresponding logical unit needs to be set in implementation to meet the protocol requirements of the corresponding interface.

[0161] The generation unit 1810 is used to generate configuration information and authorization information carried on the downlink control channel, wherein the content of the configuration information and the configuration method of the configured first uplink resource and the second uplink resource are the same as the above embodiment and are not repeated here. The communication unit 1820 controls the transmission of the configuration information and authorization information generated by the generation unit 1810, for example, for sending the configuration information to the terminal, and for sending the downlink control channel on the search space of the downlink control channel, the downlink control channel including the authorization information for the terminal.

[0162] The descriptions about the search space, the first uplink resource and the second uplink resource, and the information of the first uplink resource and the information of the second uplink resource are the same as those in the above embodiments and will not be repeated here.

[0163] In addition, the communication unit 1820 is also used to control the sending of information sent by other network devices to the terminal in the above embodiments. For example, it controls the sending of switching instructions and configuration parameters. The description of switching instructions and configuration parameters is the same as the above embodiments, and will not be repeated here.

[0164] It should be understood that the division of the various units of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these units can all be implemented in the form of software calling through processing elements; they can also be all implemented in the form of hardware; some units can also be implemented in the form of software calling through processing elements, and some units can be implemented in the form of hardware. For example, the generation unit 1810 can be a separately established processing element, or it can be integrated in a certain chip of the network device for implementation. In addition, it can also be stored in the memory of the network device in the form of a program, and called and executed by a certain processing element of the network device. The implementation of other units is similar. In addition, these units can be fully or partially integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each unit above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0165] For example, the above units may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASIC), or one or more digital singnal processors (DSP), or one or more field programmable gate arrays (FPGA). For another example, when a certain unit above is implemented in the form of a processing element scheduler, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0166] Please refer to Fig.19 , which is a schematic diagram of the structure of a network device provided in an embodiment of the present application. It can be the network device in the above embodiment, used to implement the operation of the network device in the above embodiment. Fig.19 As shown, the network device includes: an antenna 1910, a radio frequency device 1920, and a baseband device 1930. The antenna 1910 is connected to the radio frequency device 1920. In the uplink direction, the radio frequency device 1920 receives information sent by the terminal through the antenna 1910, and sends the information sent by the terminal to the baseband device 1930 for processing. In the downlink direction, the baseband device 1930 processes the information of the terminal and sends it to the radio frequency device 1920, and the radio frequency device 1920 processes the information of the terminal and sends it to the terminal through the antenna 1910.

[0167] The baseband device 1930 may include a baseband board. Usually, a network device may include multiple baseband boards. Multiple processing elements may be integrated on the baseband board to implement the required functions. For example, the above frequency domain resource processing device may be located in the baseband device 1930. In one implementation, Fig.18 Each unit shown is implemented in the form of a processing element scheduling program. For example, the baseband device 1930 includes a processing element 1931 and a storage element 1932. The processing element 1931 calls the program stored in the storage element 1932 to execute the method executed by the network device in the above method embodiment. In addition, the baseband device 1930 may also include an interface 1933 for exchanging information with the radio frequency device 1920. The interface is, for example, a common public radio interface (CPRI).

[0168] In another implementation, Fig.18Each unit shown may be one or more processing elements configured to implement the method executed by the network device, and these processing elements are arranged on the baseband device 1930. The processing elements here may be integrated circuits, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, etc. These integrated circuits may be integrated together to form a chip.

[0169] For example, Fig.18 The various units shown can be integrated together and implemented in the form of a system-on-a-chip (SOC). For example, the baseband device 1930 includes a SOC chip for implementing the above method. The chip can integrate a processing element 1931 and a storage element 1932, and the processing element 1931 calls the program stored in the storage element 1932 to implement the method executed by the network device or Fig.18 Alternatively, the chip may integrate at least one integrated circuit for implementing the method or Fig.18 The functions of the various units shown; alternatively, the above implementation methods can be combined, with the functions of some units being implemented in the form of processing elements calling programs, and the functions of some units being implemented in the form of integrated circuits.

[0170] Regardless of the method adopted, in short, the above frequency domain resource processing device for network devices includes at least one processing element and a storage element, wherein at least one processing element is used to execute the method performed by the network device provided in the above method embodiment. The processing element can execute part or all of the steps performed by the network device in the above method embodiment in a first manner: that is, executing the program stored in the storage element; or in a second manner: that is, executing part or all of the steps performed by the network device in the above method embodiment by combining the hardware integrated logic circuit in the processor element with the instruction; of course, part or all of the steps performed by the network device in the above method embodiment can also be executed in combination with the first manner and the second manner.

[0171] The processing element here is the same as described above, and can be a general-purpose processor, such as a central processing unit (CPU), or it can be one or more integrated circuits configured to implement the above method, such as: one or more application specific integrated circuits (ASIC), or, one or more microprocessors (digital singnal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.

[0172] A storage element may be a memory or a collective term for multiple storage elements.

[0173] Please refer to Fig. 20 , which is a schematic diagram of the structure of a terminal provided in an embodiment of the present application. It can be the terminal in the above embodiment, used to implement the operation of the terminal in the above embodiment. Fig. 20 As shown, the terminal includes: an antenna, a radio frequency device 2010, and a baseband device 2020. The antenna is connected to the radio frequency device 2010. In the downlink direction, the radio frequency device 2010 receives information sent by the network device through the antenna, and sends the information sent by the network device to the baseband device 2020 for processing. In the uplink direction, the baseband device 2020 processes the information of the terminal and sends it to the radio frequency device 2010, and the radio frequency device 2010 processes the information of the terminal and sends it to the network device through the antenna.

[0174] The baseband device may include a modem subsystem for processing each communication protocol layer of the data. It may also include a central processing subsystem for processing the terminal operating system and the application layer. In addition, it may also include other subsystems, such as a multimedia subsystem, a peripheral subsystem, etc., wherein the multimedia subsystem is used to control the terminal camera, screen display, etc., and the peripheral subsystem is used to connect to other devices. The modem subsystem may be a separately set chip, and optionally, the above frequency domain resource processing device may be implemented on the modem subsystem.

[0175] In one implementation, Fig.17 Each unit shown is implemented in the form of a processing element scheduling program, for example, a subsystem of the baseband device 2020, such as a modulation and demodulation subsystem, includes a processing element 2021 and a storage element 2022, and the processing element 2021 calls the program stored in the storage element 2022 to execute the method executed by the terminal in the above method embodiment. In addition, the baseband device 2020 may also include an interface 2023 for exchanging information with the radio frequency device 2010.

[0176] In another implementation, Fig.17 The various units shown may be one or more processing elements configured to implement the above terminal execution method, and these processing elements are arranged on a subsystem of the baseband device 2020, such as a modulation and demodulation subsystem, and the processing elements here may be integrated circuits, such as: one or more ASICs, or, one or more DSPs, or, one or more FPGAs, etc. These integrated circuits may be integrated together to form a chip.

[0177] For example, Fig.17The various units shown can be integrated together and implemented in the form of a system-on-a-chip (SOC). For example, the baseband device 2020 includes a SOC chip for implementing the above method. The chip can integrate a processing element 2021 and a storage element 2022, and the processing element 2021 calls the program stored in the storage element 2022 to implement the above terminal execution method or Fig.17 Alternatively, the chip may integrate at least one integrated circuit for implementing the method or Fig.17 The functions of the various units shown; alternatively, the above implementation methods can be combined, with the functions of some units being implemented in the form of processing elements calling programs, and the functions of some units being implemented in the form of integrated circuits.

[0178] Regardless of the method adopted, in short, the above frequency domain resource processing device for the terminal includes at least one processing element and a storage element, wherein at least one processing element is used to execute the method performed by the terminal provided in the above method embodiment. The processing element can execute part or all of the steps performed by the terminal in the above method embodiment in a first manner: that is, executing the program stored in the storage element; or in a second manner: that is, executing part or all of the steps performed by the terminal in the above method embodiment by combining the hardware integrated logic circuit in the processor element with the instruction; of course, part or all of the steps performed by the terminal in the above method embodiment can also be executed in combination with the first manner and the second manner.

[0179] The processing element here is the same as described above, and can be a general-purpose processor, such as a central processing unit (CPU), or it can be one or more integrated circuits configured to implement the above method, such as: one or more application specific integrated circuits (ASIC), or, one or more microprocessors (digital singnal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.

[0180] A storage element may be a memory or a collective term for multiple storage elements.

[0181] A person of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, etc., various media that can store program codes.

Claims

1. A communication method, performed by a device, comprising: Receiving configuration information from a network device, the configuration information including information about a first uplink resource and information about a second uplink resource; Detect a downlink control channel to obtain downlink control information DCI, wherein the DCI includes an indication field, the indication field is used to indicate one of a first uplink resource and a second uplink resource, when the indication field takes a value of 1, it indicates the first uplink resource, and when the indication field takes a value of 0, it indicates the second uplink resource, and the first uplink resource, the second uplink resource and the downlink resource used to carry the downlink control channel are resources of the same service cell.

2. The method according to claim 1, characterized in that The DCI further includes authorization information, where the authorization information is used to schedule resources on the first uplink resource or the second uplink resource indicated by the indication field, and the method further includes: Uplink data is sent on the resources scheduled by the grant information.

3. A communication method, performed by a device, comprising: Sending configuration information, where the configuration information includes a frequency number of the first uplink resource and a frequency number of the second uplink resource; A downlink control channel is sent, wherein the downlink control channel carries downlink control information DCI, wherein the DCI includes an indication field, wherein the indication field is used to indicate one of a first uplink resource and a second uplink resource, wherein when the indication field takes a value of 1, it indicates the first uplink resource, and when the indication field takes a value of 0, it indicates the second uplink resource, and the first uplink resource, the second uplink resource, and the downlink resource used to carry the downlink control channel are resources of the same serving cell.

4. The method according to claim 3, characterized in that The DCI further includes authorization information, where the authorization information is used to schedule resources on the first uplink resource or the second uplink resource indicated by the indication field, and the method further includes: Uplink data is received on the resources scheduled by the grant information.

5. The method according to any one of claims 1 to 4, characterized in that The detecting the downlink control channel to obtain downlink control information DCI specifically includes: A downlink control channel is detected in the same control channel candidate set to obtain a DCI carrying the authorization information of the first uplink resource, or to obtain a DCI carrying the authorization information of the second uplink resource.

6. The method according to any one of claims 1 to 5, characterized in that The first uplink resource is a supplementary uplink SUL resource.

7. The method according to any one of claims 1 to 6, characterized in that At the same time, one of the first uplink resource and the second uplink resource is activated.

8. The method according to any one of claims 1 to 7, characterized in that The configuration information is carried in a system message or in a radio resource control message.

9. The method according to any one of claims 1 to 8, characterized in that The information of the first uplink resource and the information of the second uplink resource are the frequency number of the first uplink resource and the frequency number of the second uplink resource.

10. A communication method, performed by a device, comprising: Sending capability information to a network device, the capability information indicating the device's support capability for uplink resources; receiving configuration information from the network device, the configuration information being used to configure a first uplink resource and a second uplink resource for the apparatus; receiving first downlink control information DCI from the network device, where the first DCI includes a first carrier indication field CIF, where the first CFI indicates the first uplink resource, and the first uplink resource, the second uplink resource, and the downlink resource used to carry the first DCI are resources of the same serving cell; Sending uplink data on the first uplink resource; receiving a second DCI from the network device, where the second DCI includes a second CIF, where the second CFI indicates the second uplink resource, and where the first uplink resource, the second uplink resource, and a downlink resource used to carry the second DCI are resources of the same serving cell; Uplink data is sent on the second uplink resource.

11. A communication device, comprising a unit for executing the method according to any one of claims 1 to 10.

12. A computer storage medium, characterized in that: The computer storage medium stores a computer program, which, when executed by a processor, is used to implement the method according to any one of claims 1 to 10.

13. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the computer program is used to implement the method according to any one of claims 1 to 10.

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