Mapping between different types of carriers and carrier frequencies

Abstract

Systems, apparatuses, and methods for wireless communication are described. One exemplary method includes receiving, by a wireless device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration, the radio configuration information including a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between the second carrier and one or more carrier frequencies, and operating the wireless device according to the radio configuration information.

Description

[Technical Field]

[0001] Technical Field This document relates generally to wireless communications. [Background technology]

[0002] background Wireless communication technologies are moving the world toward an increasingly connected and networked society. The rapid growth and technological advancements in wireless communications are resulting in greater demands for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectral efficiency, and latency, are also important to meet the needs of various communication scenarios. Compared to existing wireless networks, next-generation systems and wireless communication technologies provide support for an increased number of users and devices. Summary of the Invention [Means for solving the problem]

[0003] overview This document relates to methods, systems and devices for transmitting configuration information in mobile communication technologies.

[0004] In one exemplary aspect, a wireless communication method is disclosed that includes receiving, by a wireless device, radio configuration information of a wireless network including a carrier configuration and a carrier frequency configuration, the radio configuration information indicating a correspondence between carriers in the carrier configuration and more than one carrier frequency in the carrier frequency configuration, and operating the wireless device according to the radio configuration information.

[0005] In another exemplary aspect, a wireless communication method is disclosed that includes transmitting, by a network device, radio configuration information of a wireless network, the radio configuration information including a carrier configuration and a carrier frequency configuration, to the wireless device, the radio configuration information indicating a correspondence between carriers in the carrier configuration and more than one carrier frequency in the carrier frequency configuration.

[0006] In another exemplary aspect, another method of wireless communication is disclosed. The method includes receiving, by a wireless device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration, the radio configuration information including a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between the second carrier and one or more carrier frequencies; and operating the wireless device according to the radio configuration information.

[0007] In another exemplary aspect, a wireless communication method is disclosed that includes transmitting, by a network device, radio configuration information to a wireless device, the radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration, the radio configuration information including a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between the second carrier and one or more carrier frequencies.

[0008] In another example aspect, a wireless communication method is disclosed that includes receiving, by a wireless device, radio configuration information including a first carrier frequency configuration, a second carrier frequency configuration, and a carrier configuration, the radio configuration information including a first correspondence relationship between a first carrier frequency in the first carrier frequency configuration and more than one second carrier frequency in the second carrier frequency configuration, and a second correspondence relationship between the first carrier frequency and one or more operating carriers; and operating the wireless device according to the radio configuration information.

[0009] In another exemplary aspect, a wireless communication method is disclosed that includes transmitting, by a network device, radio configuration information to a wireless device, the radio configuration information including a first carrier frequency configuration, a second carrier frequency configuration, and a carrier configuration, the radio configuration information including a first correspondence relationship between a first carrier frequency in the first carrier frequency configuration and more than one second carrier frequency in the second carrier frequency configuration, and a second correspondence relationship between the first carrier frequency and one or more operating carriers.

[0010] In yet another exemplary aspect, the above-described methods are embodied in the form of processor-executable code and stored on a computer-readable program medium.

[0011] In yet another exemplary embodiment, a device configured or operable to perform the above-described method is disclosed.

[0012] These and other aspects and implementations thereof are described in more detail in the drawings, specification, and claims. The present invention provides, for example, the following. (Item 1) 1. A method of wireless communication, comprising: receiving, by a wireless device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration; the radio configuration information includes a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between a second carrier and one or more carrier frequencies; operating the wireless device in accordance with the radio configuration information; A method comprising: (Item 2) Item 1. The method of item 1, wherein a portion of a set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another of the more than one second carriers. (Item 3) Item 3. The method of item 2, wherein the frequency resources of the first carrier include frequency resources of the more than one second carrier. (Item 4) 4. The method according to any one of items 1 to 3, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier. (Item 5) 5. The method according to any one of items 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in the first carrier configuration or the second carrier configuration. (Item 6) 5. The method according to any one of items 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in the carrier frequency configuration. (Item 7) 5. The method according to any one of items 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in a separate configuration within the wireless configuration information. (Item 8) 1. A method of wireless communication, comprising: transmitting, by the network device, radio configuration information to the wireless device, the radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration; the radio configuration information includes a first correspondence between a first carrier in the first carrier configuration and one or more second carriers in the second carrier configuration, and a second correspondence between a second carrier and one or more carrier frequencies. (Item 9) Item 9. The method of item 8, wherein a portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another of the more than one second carriers. (Item 10) 10. The method of claim 9, wherein the frequency resources of the first carrier include frequency resources of the more than one second carrier. (Item 11) 11. The method according to any one of items 8 to 10, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier. (Item 12) 12. The method according to any one of items 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier configuration or the second carrier configuration. (Item 13) 12. The method according to any one of items 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in the carrier frequency configuration. (Item 14) 12. The method according to any one of items 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in a separate configuration within the wireless configuration information. (Item 15) 15. An apparatus for wireless communication comprising a processor configured to implement the method according to any one of items 1 to 14. (Item 16) A computer-readable medium having stored thereon code that, when executed by a processor, causes the processor to implement the method according to any one of items 1 to 14. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 shows an example of the channel bandwidth and maximum transmission bandwidth configuration of a New Radio (NR) channel.

[0014] [Figure 2] FIG. 2 shows an example of the relationship between carriers, a frequency domain representation of a resource grid, and bandwidth portions (BWPs).

[0015] [Figure 3] FIG. 3 shows an example of the relationship between carrier frequency, bandwidth, absolute center frequency, and frequency band.

[0016] [Figure 4A]FIG. 4A is a schematic diagram of a carrier in some embodiments.

[0017] [Figure 4B] FIG. 4B is a schematic diagram of carriers and the relationship between carriers, carrier frequencies, and frequency bands in some embodiments.

[0018] [Figure 4C] FIG. 4C is a schematic diagram of the correspondence between the carriers and the three carrier frequencies.

[0019] [Figure 5] FIG. 5 is a flowchart of an exemplary method of wireless communication.

[0020] [Figure 6] FIG. 6 shows an example of a mapping from two carriers to three carrier frequencies.

[0021] [Figure 7A] 7A and 7B are two examples showing the correspondence between carriers and carrier frequencies. [Figure 7B] 7A and 7B are two examples showing the correspondence between carriers and carrier frequencies.

[0022] [Figure 8] FIG. 8 shows an example of a first carrier corresponding to three second carriers, each corresponding to one carrier frequency.

[0023] [Figure 9] FIG. 9 is a flowchart of an exemplary method of wireless communication.

[0024] [Figure 10] FIG. 10 shows an example of mapping two first carriers to three second carriers.

[0025] [Figure 11] FIG. 11 shows an example of carriers corresponding to one first carrier frequency and one first carrier frequency corresponding to three second carrier frequencies.

[0026] [Figure 12] FIG. 12 is a flowchart of an example wireless communication method.

[0027] [Figure 13] FIG. 13 shows an example of mapping two first carrier frequencies to three second carrier frequencies.

[0028] [Figure 14] FIG. 14 is a flowchart of an exemplary method of wireless communication.

[0029] [Figure 15] FIG. 15 illustrates an example of a wireless communication network.

[0030] [Figure 16] FIG. 16 is a block diagram representing a portion of an apparatus that can be used to implement the methods and / or techniques of the disclosed technology.

[0031] [Figure 17A] 17A-17F show a flowchart of an exemplary method of wireless communication. [Figure 17B] 17A-17F show a flowchart of an exemplary method of wireless communication. [Figure 17C] 17A-17F show a flowchart of an exemplary method of wireless communication. [Figure 17D] 17A-17F show a flowchart of an exemplary method of wireless communication. [Figure 17E] 17A-17F show a flowchart of an exemplary method of wireless communication. [Figure 17F]FIG. 17F is a flowchart of an exemplary method of wireless communication. DETAILED DESCRIPTION OF THE INVENTION

[0032] Detailed Description Section headings are used in this document only to improve readability and are not intended to limit the scope of the disclosed embodiments and techniques in each section to that section only.

[0033] Wireless spectrum is a non-renewable resource primarily used for mobile network coverage. Different countries have different wireless spectrum policies, resulting in mismatches between spectrum supply and demand. Many countries around the world use market-driven spectrum auctions, where operators purchase several frequency bands at higher costs. Furthermore, due to the slow pace of generational change, operators must simultaneously operate multiple standard networks, facing the long-term coexistence of 2G, 3G, 4G, and 5G. Most communication networks with different standards and generations occupy separate frequency spectrums with different bandwidths. With the withdrawal or phase-out of 2G and 3G networks, these spare spectrum resources also need to be refarmed. These factors have led to severe fragmentation of current global spectrum resources, especially in low frequencies, making it difficult to find contiguous, large-bandwidth spectrum resources. The accelerated commercialization of 5G and the emergence of new 6G services, new scenarios, and new applications will require the support of larger bandwidths and higher throughput in the future. Efficient use of fragmented spectrum will significantly alleviate the global spectrum resource shortage.

[0034] Prior art techniques fail to efficiently use multiple fragmented spectrum resources, resulting in inefficient use of spectrum.

[0035] A carrier is used as a carrier for communication coverage of a mobile network. For a terminal device (called a user equipment (UE)), the channel bandwidth of the UE supports one radio frequency carrier in the uplink transmission direction or the downlink transmission direction. From the perspective of a base station, the channel bandwidths of multiple different UEs are all included in the same spectrum range, which is used for data transmission and reception between the base station and the UE. The channel bandwidth of a base station includes multiple carriers used for transmission with the same UE, and also includes multiple carriers used for transmission with multiple different UEs. Multiple carriers used for transmission with the same UE correspond to carrier aggregation.

[0036] From the UE's perspective, the UE is configured with one or more bandwidth portions (BWPs / carriers), and each BWP / carrier has a UE channel bandwidth. The UE only needs to pay attention to its own channel bandwidth, and does not need to know the base station's channel bandwidth or how the base station allocates bandwidth to other UEs.

[0037] For each carrier used for transmission between the UE and the base station, the distribution of the UE's channel bandwidth on the carrier may be flexible, but the UE's channel bandwidth may only be distributed within the range of the base station's channel bandwidth.

[0038] The relationship between the channel bandwidth, guard bands, and maximum transmission bandwidth configuration is shown in Figure 1, which shows the definitions of the channel bandwidth and maximum transmission bandwidth configuration of an NR channel derived from Figure 5.3.1-1 of 3GPP 38101-1.

[0039] According to the resource grid description in section 4.4.2 of 3GPP® standard specification 38211, for each carrier and each subcarrier spacing, a resource grid is defined in the uplink or downlink transmission direction, respectively, and the resource grid comprises a series of consecutive subcarriers and a series of consecutive time-domain OFDM symbols. The carrierBandwidth in the radio resource control RRC information element IE SCS-SpecificCarrier configures the bandwidth of the resource grid, and the offsetToCarrier in the radio resource control information element (RRC IE) SCS-SpecificCarrier configures the frequency-domain starting location of the resource grid. In addition, the txDirectCurrentLocation in the RRC IE UplinkTxDirectCurrentBWP and the txDirectCurrentLocation in the RRC IE SCS-SpecificCarrier configure the frequency-domain locations of the upstream and downstream DC subcarriers of the resource grid, respectively.

[0040] The RRC IE SCS-SpecificCarrier provides configuration parameters related to the carrier bandwidth at the subcarrier spacing level, which determine the frequency domain location of the carrier bandwidth (see Point A) and the width of the frequency domain range of the carrier bandwidth. For each subcarrier spacing corresponding to a BWP, the RRC IE SCS-SpecificCarrier is configured.

[0041] For example, in section 4.4.5 of 3GPP® standard specification 38211, a BWP is a subset of contiguous common resource blocks (CRBs) corresponding to a specific subcarrier spacing on a given carrier. The frequency domain start of a BWP and the number of RBs it contains must satisfy the following: [ka]

[0042] where: [ka] denotes the frequency domain start of the resource grid, [ka] represents the frequency domain width of the resource grid, [ka] represents the frequency domain start of the i-th BWP on the carrier, [ka] denotes the frequency domain width of the i-th BWP on the carrier, μ denotes the subcarrier spacing factor, and x is used to indicate the identifier of the uplink resource grid or the downlink resource grid.

[0043] For a downlink carrier, the UE can configure up to four downlink BWPs and activate up to one BWP at a given time. The UE may not receive the physical downlink shared channel PDSCH, the physical downlink control channel PDCCH, or the channel state information reference signal CSI-RS (except for radio resource management RRM) in the frequency region outside the BWP (bandwidth portion).

[0044] For an uplink carrier, the UE may configure up to four uplink BWPs and activate up to one BWP at a time. If the UE is configured with a supplemental uplink (SUL), the UE may further configure up to four uplink BWPs on the SUL carrier and activate up to one BWP at a given time. The UE does not transmit the physical uplink shared channel (PUSCH) or the physical uplink control channel (PUCCH) in the frequency region outside the activated BWPs. For an activated carrier, the UE does not transmit SRS in the frequency region outside the activated BWPs.

[0045] A wireless communication cell may use carrier resources to transmit and / or receive data packets. Carrier resources include carrier bandwidth, carrier frequency, and carrier frequency band. Carrier bandwidth is a factor that determines the cell throughput. When carrier bandwidth is small, these carriers typically cannot transmit larger data packets, thereby limiting cell traffic. In some scenarios, there are many carriers with small bandwidths, which affects data transmission efficiency. Carrier aggregation (CA) utilizes the larger frequency domain bandwidth formed by the aggregation of multiple carriers and improves data transmission efficiency. However, carrier aggregation also has some drawbacks because it requires the configuration of multiple cells, each corresponding to a carrier, and each cell must transmit its own signaling. The signaling includes higher layer signaling, such as RRC reconfiguration signaling, L1 / L2 signaling, such as MACCE (Media Access Control Layer Control Element) or DCI (Downlink Control Indicator).

[0046] The transmission of such signaling occupies part of the bandwidth resources, thereby reducing spectrum utilization.On the other hand, due to the configuration of multiple cells, the process of releasing / adding secondary cells during cell handover increases the interruption time of data transmission and reduces the cell throughput.

[0047] The following parameters and concepts may be used in various embodiments disclosed herein.

[0048] Carrier: Can refer to a collection of subcarriers based on a single subcarrier spacing. Sometimes called a virtual carrier or baseband carrier.

[0049] Furthermore, a carrier is associated with one or more BWPs, the subcarrier spacing of a carrier is equal to the subcarrier spacing of each associated BWP, and the starting RB and number of RBs of a carrier are the same as the starting RB and number of RBs of the associated BWP, respectively. [ka] where: [ka] is the starting position of the carrier's RB, [ka] is the number of RBs in the carrier, [ka] is the starting position of the RB of the i-th BWP associated with the carrier, [ka] is the number of RBs in the i-th BWP associated with the carrier.

[0050] A carrier can be associated with one resource grid, the subcarrier spacing of the carrier is equal to the subcarrier spacing of the associated resource grid, and the starting RB and number of RBs of the carrier are the same as the starting RB and number of RBs of the associated resource grid, respectively. [ka] where: [ka] is the starting position of the carrier's RB, [ka] is the number of RBs in the carrier, [ka] is the starting position of the RB in the resource grid associated with the carrier, [ka] is the number of RBs in the resource grid associated with a carrier, including carriers used for uplink transmission, carriers used for downlink transmission, carriers used for sidelink transmission, and carriers used for both uplink and downlink transmission.

[0051] Figure 2 shows an example of the relationship between carriers, a frequency domain representation of a resource grid, and BWPs. As shown from bottom to top, the resource grid can include two bandwidth portions with the same subcarrier spacing (RG1, BWP1 and SCS1, and BWP2 and SCS1) contained in carriers occupying frequency domain resources.

[0052] Carrier frequency: May correspond to an absolute frequency range (e.g., 2450 MHz to 2550 MHz) or an absolute frequency range within a frequency band. An absolute frequency range can be expressed by an absolute center frequency point (in ARFCN) and bandwidth. A carrier frequency may also be called a physical carrier or a radio frequency carrier.

[0053] FIG. 3 shows an example of the relationship between carrier frequency, bandwidth, absolute center frequency, and frequency band.

[0054] A carrier can be associated with both baseband and radio frequency processing. Baseband processing corresponds to digital signal processing or resource mapping-related processing. Radio frequency processing corresponds to analog signal processing or absolute frequency-related processing. Digital signal processing / baseband processing / resource mapping-related processing includes channel coding, modulation and demodulation, channel measurement, etc., which correspond to the contents of 3GPP (registered trademark) standard specification RAN1. Analog signal processing / radio frequency processing / absolute frequency-related processing includes absolute frequency and frequency band-related processing, which correspond to the contents of 3GPP (registered trademark) standard specification RAN4. One carrier corresponds to one subcarrier spacing, one frequency point, and one bandwidth. The frequency point of a carrier indicates its frequency domain location by its offset from the frequency domain reference point, Point A. The bandwidth of a carrier is limited by the bandwidth of the corresponding frequency band. In the case of fragmented spectrum, spectral resources are limited, and the bandwidth of the corresponding carrier is accordingly limited, which is too small to meet the high-throughput requirements. The utilization efficiency of spectral resources for multiple such carriers is very low. Figure 4A is a schematic diagram of a carrier in the prior art.

[0055] In some embodiments, a carrier frequency corresponds to an absolute center frequency point and a radio-frequency-related bandwidth, e.g., an absolute frequency range of 2450 MHz to 2550 MHz. The carrier frequency may be related to analog signal processing, radio frequency processing, or processing related to absolute frequencies. A carrier, a set of subcarriers, as disclosed herein corresponds to one subcarrier spacing. A carrier may be related to processing related to digital signal processing, baseband processing, or resource mapping. In this patent specification, the correspondence between a carrier and a carrier frequency may be such that one carrier corresponds to more than one carrier frequency. The bandwidth of a carrier may be equal to the sum of the bandwidths of more than one carrier frequency, or the sum of the bandwidths of multiple carriers may be equal to the sum of the bandwidths of multiple carrier frequencies. Such a carrier may correspond to more than one absolute frequency range and may correspond to the sum of more than one RF-related bandwidth. In the case of fragmented spectrum, the bandwidth of a carrier is equal to the sum of the bandwidths of more than one spectral resource, thereby allowing the carrier to correspond to a larger bandwidth and improving the utilization efficiency of spectral resources. Figure 4B is a schematic diagram of a carrier in some embodiments. Embodiment 1:

[0056] In some embodiments, one carrier (baseband carrier) corresponds to more than one carrier frequency (RF carrier), and the bandwidth of the carrier is equal to the sum of the bandwidths of these more than one carrier frequencies.

[0057] 4C is a schematic diagram of the correspondence between carriers and three carrier frequencies. Carrier 1 corresponds to carrier frequency 1, carrier frequency 2, and carrier frequency 3. Bandwidth 4 (bandwidth of carrier 1) is equal to the sum of bandwidth 1 (bandwidth of carrier frequency 1), bandwidth 2 (bandwidth of carrier frequency 2), and bandwidth 3 (bandwidth of carrier frequency 3).

[0058] A carrier includes one set of subcarriers with a subcarrier spacing, and the carrier corresponds to a reference subcarrier spacing. Each set of subcarriers corresponds to a subcarrier spacing configuration μ, which is used to indicate the subcarrier spacing of the set of subcarriers. The subcarrier spacing configuration μ can be 0, 1, 2, ..., which correspond to two subcarrier spacings of the reference subcarrier spacing, respectively. μ Each subcarrier of a carrier corresponds to one RE (Resource Element), and 12 REs correspond to RBs (Resource Blocks). Thus, a carrier includes one or more RE sets or one or more RB sets. A carrier can be associated with a resource grid. The subcarriers of the resource grid are mapped to the subcarriers of the carrier. Information about the REs of the resource grid is mapped to the REs of the carrier, and information about the RBs of the resource grid is mapped to the RBs of the carrier. A carrier may be associated with one or more BWPs. The subcarriers of the BWP are mapped to the subcarriers of the carrier. Information about the REs or RBs of the BWP is mapped to the REs or RBs of the carrier.

[0059] In some embodiments, a carrier is associated with baseband processing such as resource mapping. Radio resources associated with the baseband processing may be mapped to REs or RBs of a carrier. For example, a physical channel and / or a physical reference signal is mapped to REs or RBs of a carrier, or a physical channel and / or a physical reference signal is mapped to REs or RBs of a resource grid, and information about the REs or RBs of the resource grid is remapped to REs or RBs of a carrier, or a physical channel and / or a physical reference signal is mapped to REs or RBs of a BWP, and then information about the REs or RBs of the BWP is mapped to REs or RBs of a carrier, or a physical channel and / or a physical reference signal is mapped to REs or RBs of a BWP, and then information about the REs or RBs of the BWP is mapped to REs or RBs of a resource grid, and then information about the REs or RBs of the resource grid is mapped to REs or RBs of a carrier.

[0060] In some embodiments, the carrier frequency corresponds to an absolute frequency domain range, such as 2450 MHz to 2550 MHz. The carrier frequency corresponds to an absolute center frequency and a bandwidth, for example, the absolute center frequency is 2.6 GHz and the bandwidth is 100 MHz.

[0061] In this patent document, a carrier may correspond to more than one carrier frequency, a carrier may correspond to more than one absolute frequency range, more than one absolute center frequency, or more than one frequency band. In some cases, a carrier is mapped to more than one carrier frequency. A portion of the set of subcarriers of the carrier is mapped to one frequency range of the carrier frequencies, and another portion of the set of subcarriers of the carrier is mapped to another frequency range of the carrier frequencies. Each subcarrier of a carrier corresponds to an absolute frequency. The bandwidth of the carrier is equal to the sum of the bandwidths of the corresponding more than one carrier frequency.

[0062] For example, in some embodiments, one carrier corresponds to two carrier frequencies. The two carrier frequencies may be 2450 MHz to 2480 MHz and 2500 MHz to 2530 MHz, respectively. The bandwidth of this carrier is equal to the sum of the bandwidths of these two carrier frequencies, which is 30 MHz + 30 MHz = 60 MHz. The carrier corresponds to two frequency ranges, namely, 2450 MHz to 2480 MHz and 2500 MHz to 2530 MHz.

[0063] Currently, due to the auction-style spectrum resource allocation method and the reclaiming of spectrum resources occupied by 2G / 3G networks, there are many fragmented spectrum resources in low frequencies, especially for FDD (Frequency Division Duplex) spectrum. Most spectrum resources have a bandwidth of 30 MHz or less, and spectrum fragmentation reduces the utilization efficiency of spectrum resources. According to this method, a carrier can operate on more than one fragmented spectrum at the same time. For example, one carrier can correspond to more than one carrier frequency with a small bandwidth, and the carrier's bandwidth is equal to the sum of the bandwidths of these carrier frequencies. In such a case, a carrier with a larger bandwidth is formed, thereby improving the utilization efficiency of spectrum resources.

[0064] For example, one carrier can correspond to 10 carrier frequencies, each of which has a bandwidth of 10 MHz, and the bandwidth of the carrier is equal to the sum of the bandwidths of these 10 carrier frequencies, which is equal to 100 MHz.

[0065] For transmission to a communication node, such as a base station or a terminal, carrier-to-carrier frequency mapping may be performed in a module responsible for radio frequency processing, including but not limited to filtering, digital and analog signal conversion, power amplification, and frequency shifting. In this module, signals on the carrier from a module responsible for baseband processing are mapped to one or more corresponding carrier frequencies, each corresponding to an absolute center frequency, bandwidth, and frequency band.

[0066] FIG. 5 is a flowchart of the UE processing of the method of the present invention in this embodiment, and the steps include:

[0067] Step 1 (502): The UE receives first configuration information, where the configuration information includes a carrier configuration and a carrier frequency configuration.

[0068] The configuration information may include a correspondence between a carrier and a carrier frequency, and the correspondence may be in the carrier configuration information, or in the carrier frequency configuration information, or may be indicated separately.

[0069] The correspondence between a carrier and a carrier frequency may include a correspondence between one carrier and more than one carrier frequency, or a correspondence between multiple carriers and multiple carrier frequencies.

[0070] When a carrier corresponds to more than one carrier frequency, the bandwidth of one carrier is equal to the sum of the bandwidths of the carrier frequencies. [ka] where BW C represents the carrier bandwidth, and BW F,j represents the bandwidth of the j-th carrier frequency.

[0071] For M carriers corresponding to N carrier frequencies, with 1 ≤ M ≤ N, the sum of the bandwidths of the M carriers is equal to the sum of the bandwidths of the N carrier frequencies, [ka] where: [ka] represents the bandwidth of the i-th carrier, [ka] represents the bandwidth of the jth carrier frequency.

[0072] In the prior art, a carrier corresponds to one or more frequency band information and a frequency domain reference point, PointA. The carrier configuration includes a frequency offset, a bandwidth, and a subcarrier spacing relative to the frequency domain reference point, PointA. The frequency domain information configuration includes a frequency band list, a frequency domain reference point, PointA, and a carrier configuration list. In this way, the carrier, the frequency band, and the frequency domain reference point, PointA, have a corresponding relationship.

[0073] For example, the resource control information unit (RRC IE) FrequencyInfoDL may be as follows: [ka] Here, frequencyBandList represents the frequency band corresponding to the carrier, absoluteFrequencyPointA represents the frequency domain location of the frequency domain reference point PointA, here represented by ARFCN, and scs-SpecificCarrierList represents the list of carrier configurations, where ARFCN is the absolute radio frequency channel number.

[0074] The resource control information unit (RRC IE) SCS-SpecificCarrier is as follows: [ka] Here, SCS-SpecificCarrier represents the carrier configuration, offsetToCarrier represents the frequency domain offset between the carrier and the frequency domain reference point PointA, which determines the frequency domain position of the carrier, subcarrierSpacing represents the subcarrier spacing of the carrier, and carrierBandwidth indicates the bandwidth of the carrier.

[0075] In some embodiments, the carrier configuration includes a carrier index, a subcarrier spacing, and a bandwidth, and the carrier frequency configuration includes a carrier frequency index, an absolute frequency point in the ARFCN, a bandwidth, and a frequency band.

[0076] The correspondence between the carrier and the carrier frequency includes one of the following methods: a carrier frequency index is included in the carrier configuration; the carrier configuration includes a carrier frequency configuration; the carrier frequency configuration includes a carrier index; the carrier configuration includes an array corresponding to carrier frequency information, each element in the array corresponds to one carrier frequency information, and the carrier frequency information includes an absolute frequency point, a bandwidth, and a frequency band list; or the configuration includes a carrier index and a carrier frequency index.

[0077] In this embodiment, the carrier configuration, the carrier frequency configuration, and the configuration of the correspondence relationship between the carrier and the carrier frequency can be represented by a radio resource control information element (RRC IE) including at least one of the following methods:

[0078] Method 1.1:

[0079] The first radio resource control information element (RRC IE) represents carrier configuration information including a carrier index, a subcarrier spacing, a carrier bandwidth, and a list of corresponding carrier frequency indices, and the second radio resource control information element (RRC IE) represents carrier frequency configuration information including a carrier frequency index, an absolute frequency, a carrier frequency bandwidth, and a corresponding frequency band list.

[0080] moreover, [ka]

[0081] Here, carrier index indicates a carrier index, sub-carrier spacing indicates the subcarrier spacing of a carrier, carrier bandwidth indicates the carrier bandwidth, corresponding carrier frequency index indicates a carrier frequency index corresponding to a carrier, carrier frequency index indicates a carrier frequency index, absolute frequency point indicates an absolute frequency point of a carrier frequency, carrier frequency bandwidth indicates the carrier frequency bandwidth, and corresponding frequency band list indicates a frequency band corresponding to a carrier frequency. ARFCN is an absolute radio frequency channel number. FreqBandIndicator indicates a frequency band indicator used to indicate a frequency band. maxValue is a maximum value.

[0082] Method 1.2:

[0083] The first radio resource control information element (RRC IE) represents a frequency domain information configuration including a carrier frequency information list, each element of which consists of an absolute frequency point, bandwidth, and frequency band list, an absolute frequency domain location of a reference point (Point A), and a carrier configuration list. The second radio resource control information element (RRC IE) represents a carrier configuration including a subcarrier spacing, a frequency domain offset relative to the reference point (Point A), carrier bandwidth, and an array, where each value in the array corresponds to the position of an element in the carrier frequency information list. For example, the array {1,3,5} represents the first, third, and fifth elements in the carrier frequency information list.

[0084] moreover, [ka]

[0085] Here, the carrier frequency information includes the absolute frequency of the carrier frequency, the bandwidth of the carrier frequency, and the frequency band corresponding to the carrier frequency. The absolute frequency domain position of the reference point (Point A) represents the absolute frequency domain position of the reference point (Point A), represented by the ARFCN. The subcarrier spacing represents the subcarrier spacing of the carrier. The frequency domain offset relative to the reference point (Point A) represents the frequency offset of the carrier from the reference point (Point A). The carrier bandwidth represents the bandwidth of the carrier. The corresponding carrier frequency information list represents a set of carrier frequency information corresponding to a carrier in the form of an array (SEQUENCE). Each value corresponds to the position of an element in the carrier frequency information list. A value of 1 represents the first element in the carrier frequency information list, a value of 2 represents the second element in the carrier frequency information list, and so on. The corresponding carrier frequency information list field can be configured to contain multiple elements, each corresponding to a carrier frequency information IE representing a carrier corresponding to more than one carrier frequency. The ARFCN is an absolute radio frequency channel number. FreqBandIndicator represents the frequency band indicator used to indicate the frequency band. maxValue is the maximum value.

[0086] Method 1.3:

[0087] The first radio resource control information element (RRC IE) represents carrier configuration information, including carrier index, subcarrier spacing, and bandwidth. The second radio resource control information element (RRC IE) represents carrier frequency configuration information, including a carrier frequency index, an absolute frequency, a bandwidth, a list of frequency bands to which it belongs, and a list of corresponding carrier indexes.

[0088] moreover, [ka]

[0089] Here, carrier index indicates the carrier index, subcarrier spacing indicates the subcarrier spacing of the carrier, carrier bandwidth indicates the carrier bandwidth, corresponding carrier index list indicates the carrier index corresponding to the carrier frequency, carrier frequency index indicates the carrier frequency index, absolute frequency indicates the absolute frequency point of the carrier frequency, carrier frequency bandwidth indicates the carrier frequency bandwidth, and frequency band list indicates the frequency band corresponding to the carrier frequency. ARFCN is the absolute radio frequency channel number. FreqBandIndicator indicates the frequency band indicator used to indicate the frequency band. maxValue is the maximum value.

[0090] Method 1.4:

[0091] The first radio resource control information element (RRC IE) represents carrier configuration information, including carrier index, subcarrier spacing, and bandwidth. The second radio resource control information element (RRC IE) represents carrier frequency configuration information, including a carrier frequency index, an absolute frequency, a bandwidth, and a list of corresponding frequency bands. The third radio resource control information element (RRC IE) represents configuration information of the correspondence relationship between carriers and carrier frequencies, including a list, and each element in the list mainly consists of two parts: a carrier index and a list of carrier frequency indexes.

[0092] moreover, [ka]

[0093] Here, carrier index indicates a carrier index, subcarrier spacing indicates the subcarrier spacing of the carrier, carrier bandwidth indicates the carrier bandwidth, carrier frequency index indicates a carrier frequency index, absolute frequency indicates the absolute frequency point of the carrier frequency, carrier frequency bandwidth indicates the bandwidth of the carrier frequency, and multiple correspondences between carriers and carrier frequencies indicate that one carrier (indicated by the carrier index in the correspondence between carrier and carrier frequency field) corresponds to a carrier frequency (indicated by the carrier frequency index list in the correspondence between carrier and carrier frequency field). The correspondence between a carrier and a carrier frequency list can constitute a correspondence between a carrier and more than one carrier frequency, which indicates that one carrier corresponds to more than one carrier frequency. ARFCN is the absolute radio frequency channel number. FreqBandIndicator indicates the frequency band indicator used to indicate the frequency band. maxValue is the maximum value.

[0094] The correspondence between the carrier and the carrier frequency is configured through an RRC message, including RRCsetup, RRCReconfiguration, ReconfigurationWithSync, or a system message. The system message includes SIB1.

[0095] Furthermore, system messages received by a UE in IDLE or INACTIVE state include correspondences, and RRCsetup and / or RRCReconfiguration received by a UE in CONNECTED state include correspondences.

[0096] During the cell handover process, the ReconfigurationWithSync received by the UE includes the correspondence.

[0097] The correspondence between the carrier and the carrier frequency can be modified by higher layer signaling, including RRCReconfiguration.

[0098] The configuration of the correspondence between carriers and carrier frequencies includes: UE level configuration: configuring the same correspondence for all cells configured for the UE; or cell group level configuration: for cell groups configured for the UE, one correspondence is configured for each cell group, and all cells in the cell group use the same configured correspondence, and the correspondence is configured independently between cell groups; or cell level configuration: for cells configured for the UE, one correspondence is configured for each cell, and the correspondence can be configured independently between cells.

[0099] Step 2 (504): The UE configures carriers and carrier frequencies, and configures a correspondence relationship between the carriers and the carrier frequencies. The correspondence relationship between the carriers and the carrier frequencies includes that one carrier corresponds to more than one carrier frequency, or that M carriers correspond to N carrier frequencies (1≦M≦N). When one carrier corresponds to more than one carrier frequency, the bandwidth of one carrier is equal to the sum of the bandwidths of the more than one carrier frequencies; [ka] where: [ka] represents the carrier bandwidth, [ka] represents the bandwidth of the jth carrier frequency. If M carriers correspond to N carrier frequencies, the sum of the bandwidths of the M carriers is equal to the sum of the bandwidths of the N carrier frequencies, [ka] where: [ka] represents the bandwidth of the i-th carrier, [ka] represents the bandwidth of the jth carrier frequency.

[0100] Furthermore, a carrier may be mapped to more than one carrier frequency. In such a case, the carrier corresponds to more than one different frequency range. A portion of the set of subcarriers of the carrier is mapped to one frequency range of the more than one carrier frequency, and another portion of the set of subcarriers of the carrier is mapped to another frequency range of the more than one carrier frequency. Each subcarrier of a carrier corresponds to an absolute frequency. The subcarriers of a carrier mapped to one of the more than one carrier frequencies correspond to an absolute center frequency. The subcarriers of a carrier mapped to one of the more than one carrier frequencies correspond to one or more frequency bands.

[0101] FIG. 6 shows an example of mapping from two carriers to three carrier frequencies. A first portion of the set of subcarriers for carrier 1 is mapped to carrier frequency 1, and a second portion of the collection of subcarriers for carrier 1 is mapped to carrier frequency 2. A first portion of the set of subcarriers for carrier 2 is mapped to carrier frequency 2, and a second portion of the collection of subcarriers for carrier 2 is mapped to carrier frequency 3. Carrier 1 and carrier 2 share the frequency range of carrier frequency 2. The bandwidth of carrier 1 is equal to the sum of the bandwidth of carrier frequency 1 and the bandwidth of the portion of carrier frequency 2 mapped by carrier 1, and the bandwidth of carrier 2 is equal to the sum of the bandwidth of carrier frequency 3 and the bandwidth of the portion of carrier frequency 2 mapped by carrier 2.

[0102] For example, a carrier with a subcarrier spacing of 30 KHz and a bandwidth of 100 M corresponds to four carrier frequencies: 730 MHz to 740 MHz, 791 MHz to 821 MHz, 869 MHz to 894 MHz, and 925 MHz to 960 MHz.

[0103] Some embodiments may use a first radio resource control information element (RRC IE) configuration method as follows.

[0104] The carrier configuration information includes that the carrier index field is configured to be 1, the subcarrier spacing field is configured to be 30KHz, the carrier bandwidth field is configured to be 100M, and the corresponding carrier frequency index list field is configured to be 1, 2, 3, and 4.

[0105] The configuration information of the first carrier frequency includes that the carrier frequency index field is configured as 1, the absolute frequency point field is configured as 735 MHz, the carrier frequency bandwidth field is configured as 10 MHz, and the corresponding frequency band list field is configured as n12.

[0106] The configuration information of the second carrier frequency includes that the carrier frequency index field is configured to be 2, the absolute frequency point field is configured to be 806 MHz, the carrier frequency bandwidth field is configured to be 30 MHz, and the corresponding frequency band list field is configured to be n20.

[0107] The configuration information of the third carrier frequency includes that the carrier frequency index field is configured to 3, the absolute frequency field is configured to 882 MHz, the carrier frequency bandwidth field is configured to 25 MHz, and the corresponding frequency band list field is configured to n5.

[0108] The configuration information of the fourth carrier frequency includes that the carrier frequency index field is configured to 4, the absolute frequency point field is configured to 943 MHz, the carrier frequency bandwidth field is configured to 35 MHz, and the corresponding frequency band list field is configured to n8.

[0109] The UE obtains the above five pieces of configuration information and configures carrier 1, which has a subcarrier spacing of 30 KHz and a bandwidth of 100 MHz, to correspond to carrier frequency 1, which has a bandwidth of 10 MHz, carrier frequency 2, which has a bandwidth of 30 MHz, carrier frequency 3, which has a bandwidth of 25 MHz, and carrier frequency 4, which has a bandwidth of 35 MHz. Therefore, the absolute frequency ranges corresponding to the carriers are 730 MHz to 740 MHz, 791 MHz to 821 MHz, 869 MHz to 894 MHz, and 925 MHz to 960 MHz, and the corresponding frequency band indication indexes are n12, n20, n5, and n8.

[0110] 7A and 7B are two examples showing the correspondence between carriers and carrier frequencies. FIG. 7A shows two carriers, Carrier 2 and Carrier 3, each corresponding to three carrier frequencies. Carrier 2 corresponds to Carrier Frequency 4, Carrier Frequency 5, and Carrier Frequency 6, and Carrier 3 corresponds to Carrier Frequency 7, Carrier Frequency 8, and Carrier Frequency 9. FIG. 7B also shows two carriers each corresponding to three carrier frequencies, but the difference is that the two carriers are mapped to the same carrier frequency, Carrier Frequency 12. In particular, Carrier 4 corresponds to Carrier Frequency 10, Carrier Frequency 11, and Carrier Frequency 12, and Carrier 5 corresponds to Carrier Frequency 12, Carrier Frequency 13, and Carrier Frequency 14. Embodiment 2:

[0111] This embodiment mainly provides a method in which one first carrier corresponds to more than one second carrier, and one or more second carriers correspond to one or more carrier frequencies, where the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier and equal to the sum of the bandwidths of the multiple carrier frequencies, thereby improving spectral efficiency and solving the problem of low transmission efficiency of fragmented spectrum.

[0112] FIG. 8 is a schematic diagram of a first carrier corresponding to three second carriers, each corresponding to a carrier frequency, where first carrier 1 corresponds to second carrier 1, second carrier 2, and second carrier 3, and bandwidth 4 (bandwidth of first carrier 1) is equal to the sum of bandwidth 1 (bandwidth of second carrier 1), bandwidth 2 (bandwidth of second carrier 2), and bandwidth 3 (bandwidth of second carrier 3). Second carrier 1, second carrier 2, and second carrier 3 correspond to carrier frequency 1, carrier frequency 2, and carrier frequency 3, respectively. The bandwidth of second carrier 1 is equal to the bandwidth of carrier frequency 1, the bandwidth of second carrier 2 is equal to the bandwidth of carrier frequency 2, and the bandwidth of second carrier 3 is equal to the bandwidth of carrier frequency 3.

[0113] The first carrier includes one set of subcarriers with a subcarrier spacing, and the first carrier corresponds to a reference subcarrier spacing. Each set of subcarriers corresponds to a subcarrier spacing configuration μ, which is used to indicate the subcarrier spacing of the set of subcarriers. The subcarrier spacing configuration μ can be 0, 1, 2, ..., each representing a multiple of the reference subcarrier spacing. Each subcarrier of the first carrier corresponds to one RE, and 12 REs correspond to one RB. Thus, the first carrier includes one or more RE sets or RB sets.

[0114] The second carrier includes one or more sets of subcarriers with different subcarrier spacings, and the second carrier corresponds to a reference subcarrier spacing. Each set of subcarriers corresponds to a subcarrier spacing configuration μ, which is used to indicate the subcarrier spacing of the set of subcarriers. The subcarrier spacing configuration μ can be 0, 1, 2, ..., each representing a multiple of the reference subcarrier spacing. Each subcarrier of the second carrier corresponds to one RE, and 12 REs correspond to one RB. Thus, the second carrier includes one or more sets of REs or RBs.

[0115] The first carrier is associated with one resource grid. Subcarriers of the resource grid are mapped to subcarriers of the first carrier. Information about REs of the resource grid is mapped to REs of the first carrier, and information about RBs of the resource grid is mapped to RBs of the first carrier. The first carrier is associated with one or more BWPs. Subcarriers of the BWPs are mapped to subcarriers of the first carrier. Information about REs or RBs of the BWPs is mapped to REs or RBs of the first carrier. The first carrier is associated with baseband processing, such as resource mapping. Radio resources associated with baseband processing may be mapped to REs or RBs of the first carrier. For example, a physical channel and / or a physical reference signal is mapped to an RE or RB of a first carrier, or a physical channel and / or a physical reference signal is mapped to an RE or RB of a resource grid and information relating to the RE or RB of the resource grid is remapped to an RE or RB of the first carrier, or a physical channel and / or a physical reference signal is mapped to an RE or RB of a BWP and then information relating to the RE or RB of the BWP is mapped to an RE or RB of the first carrier, or a physical channel and / or a physical reference signal is mapped to an RE or RB of a BWP and then information relating to the RE or RB of the BWP is mapped to an RE or RB of the resource grid and then information relating to the RE or RB of the resource grid is mapped to an RE or RB of the first carrier.

[0116] The second carrier is associated with one resource grid. Subcarriers of the resource grid are mapped to subcarriers of the second carrier. Information about REs of the resource grid is mapped to REs of the second carrier, and information about RBs of the resource grid is mapped to RBs of the second carrier. The second carrier is associated with one or more BWPs. Subcarriers of the BWPs are mapped to subcarriers of the second carrier. Information about REs or RBs of the BWPs is mapped to REs or RBs of the second carrier. The second carrier is associated with baseband processing, such as resource mapping. Radio resources associated with baseband processing may be mapped to REs or RBs of the second carrier. For example, a physical channel and / or a physical reference signal is mapped to an RE or RB of a second carrier, or a physical channel and / or a physical reference signal is mapped to an RE or RB of a resource grid and information relating to the RE or RB of the resource grid is remapped to an RE or RB of the second carrier, or a physical channel and / or a physical reference signal is mapped to an RE or RB of a BWP and then information relating to the RE or RB of the BWP is mapped to an RE or RB of the second carrier, or a physical channel and / or a physical reference signal is mapped to an RE or RB of a BWP and then information relating to the RE or RB of the BWP is mapped to an RE or RB of the resource grid and then information relating to the RE or RB of the resource grid is mapped to an RE or RB of the second carrier.

[0117] The carrier frequency corresponds to an absolute frequency range, such as 2450 MHz to 2550 MHz, or an absolute frequency and a bandwidth, for example, the absolute frequency is 2.6 GHz and the bandwidth is 100 MHz.

[0118] In this embodiment, one first carrier corresponds to more than one second carrier. One subcarrier of the first carrier corresponds to one subcarrier of the more than one second carrier. A portion of the set of subcarriers of the first carrier corresponds to the set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier corresponds to the set of subcarriers of another one of the more than one second carriers. The first carrier may correspond to second carriers with the same subcarrier spacing, or may correspond to second carriers with different subcarrier spacing. One first carrier is mapped to more than one second carrier, and one subcarrier of the first carrier is mapped to one subcarrier of the more than one second carrier. A portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another of the more than one second carriers. The first carrier may be mapped to second carriers with the same subcarrier spacing or may be mapped to second carriers with different subcarrier spacing. The bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carriers.

[0119] In some embodiments, one or more second carriers correspond to one or more carrier frequencies. Each subcarrier of the second carrier corresponds to an absolute frequency. The second carrier is mapped to the corresponding carrier frequency. Each subcarrier of the second carrier is mapped to an absolute frequency. When one second carrier corresponds to one carrier frequency, the bandwidth of the second carrier is equal to the bandwidth of the corresponding carrier frequency. When one second carrier corresponds to multiple carrier frequencies, the bandwidth of the second carrier is equal to the sum of the bandwidths of the corresponding carrier frequencies.

[0120] For example, one first carrier corresponds to two second carriers, and the two second carriers correspond to two carrier frequencies, respectively. The two carrier frequencies are 2450 MHz to 2480 MHz and 2500 MHz to 2530 MHz. The first carrier corresponds to these two second carriers, and the first carrier is mapped to these two second carriers. The first second carrier corresponds to the first carrier frequency, and the second second carrier corresponds to the second carrier frequency. The first second carrier is mapped to the first carrier frequency, and the second second carrier is mapped to the second carrier frequency. Therefore, the absolute frequency range corresponding to the first second carrier is 2450 MHz to 2480 MHz, and the absolute frequency range corresponding to the second second carrier is 2500 MHz to 2530 MHz. Therefore, the first carrier corresponds to two absolute frequency ranges, namely, 2450MHz~2480MHz and 2500MHz~2530MHz. The bandwidths of the two second carriers are equal to the bandwidths of the two carrier frequencies, 30MHz and 30MHz, respectively, and the bandwidth of the first carrier is equal to the sum of the bandwidths of the two second carriers, which is 30MHz+30MHz=60MHz.

[0121] Currently, due to the auction-style spectrum resource allocation method and the reclaiming of spectrum resources occupied by 2G / 3G networks, there are many fragmented spectrum resources, especially FDD spectrum. Most spectrum resources have a bandwidth of 30M or less, and spectrum fragmentation reduces the utilization efficiency of spectrum resources. According to this method, a carrier can operate on more than one fragmented spectrum simultaneously. One first carrier corresponds to more than one second carrier, and each second carrier corresponds to a carrier frequency with a smaller bandwidth. The bandwidth of the first carrier is equal to the sum of the bandwidths of these second carriers, which is equal to the sum of the bandwidths of these carrier frequencies. A first carrier with a larger bandwidth is formed, thereby improving the utilization efficiency of spectrum resources.

[0122] For example, if a first carrier corresponds to 10 second carriers, and these 10 second carriers correspond to 10 carrier frequencies, each having a bandwidth of 10MHz, then the bandwidth of the first carrier is equal to the sum of the bandwidths of the 10 second carriers, which is equal to the sum of the bandwidths of the 10 carrier frequencies, which is equal to 100M.

[0123] In the case of a transmitting communication node such as a base station or a terminal, the mapping from the first carrier to the second carrier may be performed in a module responsible for baseband processing, including but not limited to resource mapping, in which the first carrier is mapped to more than one second carrier and information about the first carrier is also mapped to the corresponding second carrier.

[0124] For a transmitting communication node such as a base station or a terminal, the mapping of the second carrier to a carrier frequency can be performed in a module responsible for radio frequency processing, which includes, but is not limited to, filtering, digital and analog signal conversion, power amplification, and frequency shifting. In this module, the signal on the second carrier from the module responsible for baseband processing is mapped to a corresponding carrier frequency, and each carrier frequency corresponds to an absolute center frequency point, a bandwidth, and a frequency band.

[0125] For example, in a module responsible for baseband processing, a first carrier is mapped to two second carriers, and the physical channel mapped to the first carrier is then mapped to the two second carriers. In a module responsible for radio frequency processing, the two second carriers and the physical channel from the module responsible for baseband processing are mapped to two corresponding carrier frequencies. In this way, the physical channel is transmitted on two different carrier frequencies, i.e., one physical channel is transmitted over two different frequency ranges. The two frequency ranges may be adjacent, non-adjacent, or overlapping.

[0126] FIG. 9 is a flowchart of a UE side process of a wireless communication method, the steps of which include:

[0127] Step 1 (902): The UE receives second configuration information, where the configuration information includes a first carrier configuration, a second carrier configuration, and a carrier frequency configuration. The configuration information includes a first correspondence relationship between the first carrier and the second carrier, where the first correspondence relationship may be in the first carrier configuration information, may be in the second carrier frequency configuration information, or may be separately indicated. The configuration information also includes a second correspondence relationship between the second carrier and the carrier frequency, where the second correspondence relationship may be in the second carrier configuration information, may be in the carrier frequency configuration information, or may be separately indicated.

[0128] The first correspondence between the first carrier and the second carrier includes a correspondence between one first carrier and more than one second carrier, or a correspondence between multiple first carriers and multiple second carriers.

[0129] When one first carrier corresponds to more than one second carrier, the bandwidth of the one first carrier is equal to the sum of the bandwidths of the more than one second carrier; [ka] where: [ka] represents the bandwidth of the first carrier, [ka] represents the bandwidth of the jth second carrier.

[0130] For M1 first carriers corresponding to N1 second carriers, where 1≦M1≦N1, the sum of the bandwidths of the M1 carriers is equal to the sum of the bandwidths of the N1 carriers; [ka] where: [ka] represents the bandwidth of the i-th first carrier, [ka] represents the bandwidth of the j-th second carrier.

[0131] The second correspondence relationship between the second carrier and the carrier frequency includes one second carrier corresponding to one carrier frequency, or one second carrier corresponding to multiple carrier frequencies, and the bandwidth of the one second carrier is equal to the bandwidth of one carrier frequency, or the bandwidth of the one second carrier is equal to the sum of the bandwidths of the multiple carrier frequencies.

[0132] In the prior art, one carrier corresponds to one or more frequency band information and frequency domain reference point PointA. The carrier configuration includes a frequency domain offset relative to the frequency domain reference point PointA, a bandwidth, and a subcarrier spacing. The frequency domain information configuration includes a frequency band list, a frequency domain reference point PointA, and a list of carrier configurations. In this way, the carrier, the frequency band, and the frequency domain reference point PointA have a corresponding relationship.

[0133] for example, [ka]

[0134] Here, frequencyBandList represents the frequency band corresponding to the carrier, absoluteFrequencyPointA represents the frequency domain location of the frequency domain reference point PointA, here represented by ARFCN, and scs-SpecificCarrierList represents the list of carrier configurations. [ka]

[0135] where SCS-SpecificCarrier represents the carrier configuration, offsetToCarrier represents the frequency domain offset between the carrier and the frequency domain reference point PointA, which determines the frequency domain location of the carrier, subcarrierSpacing represents the subcarrier spacing of the carrier, carrierBandwidth represents the bandwidth of the carrier, and ARFCN is the absolute radio frequency channel number.

[0136] In some embodiments, the first carrier configuration includes a first carrier index, a subcarrier spacing, and a bandwidth, the second carrier configuration includes a second carrier index, a subcarrier spacing, and a bandwidth, and the carrier frequency configuration includes a carrier frequency index, an absolute frequency point in the ARFCN, a bandwidth, and a list of corresponding frequency bands.

[0137] The first correspondence relationship configuration includes: a first carrier configuration including an index of a second carrier; a first carrier configuration including a second carrier configuration; a second carrier configuration including an index of the first carrier; or one piece of configuration information including a first carrier index and a second carrier index.

[0138] The second correspondence relationship configuration includes: the second carrier configuration including a carrier frequency index; the second carrier configuration including a carrier frequency configuration; the carrier frequency configuration including a second carrier index; or one piece of configuration information including a second carrier index and a carrier frequency index.

[0139] In this embodiment, the first carrier configuration, the second carrier configuration, the carrier frequency configuration, the configuration of the correspondence relationship between the first carrier and the second carrier, and the configuration of the correspondence relationship between the second carrier and the carrier frequency can be represented by a radio resource control information unit (RRC IE) including at least one of the following methods:

[0140] Method 2.1:

[0141] The first radio resource control information element (RRC IE) represents configuration information of a first carrier, including a first carrier index, a first carrier subcarrier spacing, a first carrier bandwidth, and a list of corresponding second carrier indexes. The second radio resource control information element (RRC IE) represents configuration information of a second carrier, including a second carrier index, a second carrier subcarrier spacing, a second carrier bandwidth, and a corresponding carrier frequency index. The third radio resource control information element (RRC IE) represents carrier frequency configuration information, including a carrier frequency index, an absolute frequency, a carrier frequency bandwidth, and a list of corresponding frequency bands.

[0142] moreover, [ka]

[0143] Here, "first carrier index" indicates the index of the first carrier, "second carrier index" indicates the index of the second carrier, "first carrier subcarrier spacing" indicates the subcarrier spacing of the first carrier, "second carrier subcarrier spacing" indicates the subcarrier spacing of the second carrier, "first carrier bandwidth" indicates the bandwidth of the first carrier, "second carrier bandwidth" indicates the bandwidth of the second carrier, "corresponding second carrier index list" indicates the second carrier index corresponding to the first carrier, "corresponding carrier frequency index list" indicates the carrier frequency index corresponding to the second carrier, "carrier frequency index" indicates the index of the carrier frequency, "absolute frequency point" indicates the absolute frequency point of the carrier frequency, "carrier frequency bandwidth" indicates the bandwidth of the carrier frequency, and "corresponding frequency band list" indicates the frequency band corresponding to the carrier frequency. "ARFCN" is the absolute radio frequency channel number. "FreqBandIndicator" indicates the frequency band indicator used to indicate the frequency band. "maxValue" is the maximum value.

[0144] Method 2.2:

[0145] The first radio resource control information element (RRC IE) represents configuration information of a first carrier, including a first carrier index, a first carrier subcarrier spacing, and a first carrier bandwidth. The second radio resource control information element (RRC IE) represents configuration information of a second carrier, including a second carrier index, a subcarrier spacing of the second carrier, a second carrier bandwidth, a list of corresponding first carrier frequency indexes, and a list of corresponding carrier frequency indexes. The third radio resource control information element (RRC IE) represents carrier frequency configuration information, including a carrier frequency index, an absolute frequency, a carrier frequency bandwidth, and a list of corresponding frequency bands.

[0146] moreover, [ka]

[0147] Here, "first carrier index" indicates the index of the first carrier, "second carrier index" indicates the index of the second carrier, "first carrier subcarrier spacing" indicates the subcarrier spacing of the first carrier, "second carrier subcarrier spacing" indicates the subcarrier spacing of the second carrier, "first carrier bandwidth" indicates the bandwidth of the first carrier, "second carrier bandwidth" indicates the bandwidth of the second carrier, "corresponding first carrier index list" indicates the index of the first carrier corresponding to the second carrier, "carrier frequency index list" indicates the index of the carrier frequency, "absolute frequency point" indicates the absolute frequency point of the carrier frequency, "carrier frequency bandwidth" indicates the bandwidth of the carrier frequency, and "corresponding frequency band list" indicates the frequency band corresponding to the carrier frequency. "ARFCN" is the absolute radio frequency channel number. "FreqBandIndicator" indicates the frequency band indicator used to indicate the frequency band. "maxValue" is the maximum value.

[0148] Method 2.3:

[0149] The first radio resource control information element (RRC IE) represents configuration information of the first carrier, including a first carrier index, a first carrier subcarrier spacing, and a first carrier bandwidth. The second radio resource control information element (RRC IE) represents configuration information of the second carrier, including a second carrier index, a subcarrier spacing of the second carrier, a second carrier bandwidth, and a list of corresponding carrier frequency indexes. The third radio resource control information element (RRC IE) represents carrier frequency configuration information, including a carrier frequency index, an absolute frequency, a carrier frequency bandwidth, and a list of corresponding frequency bands. The fourth radio resource control information element (RRC IE) represents configuration information of the correspondence between the first carrier and the second carrier, including a list, and each element in the list mainly consists of two parts: a first carrier index and a list of second carrier indexes.

[0150] moreover, [ka]

[0151] Here, "first carrier index" indicates the index of the first carrier, "first carrier subcarrier spacing" indicates the subcarrier spacing of the first carrier, "first carrier bandwidth" indicates the bandwidth of the first carrier, "second carrier index" indicates the index of the second carrier, "second carrier subcarrier spacing" indicates the subcarrier spacing of the second carrier, "second carrier bandwidth" indicates the bandwidth of the second carrier, "carrier frequency index" indicates the index of the carrier frequency, "absolute frequency point" indicates the absolute frequency point of the carrier frequency, "carrier frequency bandwidth" indicates the bandwidth of the carrier frequency, and "correspondence between first carrier and second carrier" represents the correspondence between the first carrier (indicated by the first carrier index) and the second carrier (indicated by the second carrier index list). The correspondence between the first carrier and the second carrier can be configured in terms of the correspondence between one first carrier and more than one second carrier, which means that one first carrier corresponds to more than one second carrier. The correspondence between first carrier and second carrier list can be configured to include multiple correspondences, each representing a correspondence between one first carrier and more than one second carrier, meaning that multiple first carriers correspond to more than one second carrier. If the correspondence between first carrier and second carrier list includes only one correspondence between one first carrier and more than one second carrier, meaning that one first carrier corresponds to more than one second carrier.ARFCN is the absolute radio frequency channel number. FreqBandIndicator represents the frequency band indicator used to indicate the frequency band. maxValue is the maximum value.

[0152] The first correspondence relationship is configured through an RRC message, where the RRC message includes an RRC setup, an RRC Reconfiguration, a ReconfigurationWithSync, or a system message. The system message includes SIB1.

[0153] The second correspondence relationship is configured through an RRC message, where the RRC message includes an RRC setup, an RRC Reconfiguration, a ReconfigurationWithSync, or a system message. The system message includes SIB1.

[0154] Furthermore, a system message received by a UE in an IDLE or INACTIVE state includes the first correspondence, and an RRCsetup and / or RRCReconfiguration received by a UE in a CONNECTED state includes the first correspondence. During a cell handover process, a ReconfigurationWithSync received by the UE includes the first correspondence. The first correspondence is modified by higher layer signaling, and the higher layer signaling includes RRCReconfiguration.

[0155] A system message received by a UE in an IDLE or INACTIVE state includes the second correspondence, and an RRCsetup and / or RRCReconfiguration received by a UE in a CONNECTED state includes the second correspondence. During a cell handover process, a ReconfigurationWithSync received by the UE includes the second correspondence. The second correspondence is modified by higher layer signaling, and the higher layer signaling includes RRCReconfiguration.

[0156] The configuration of the first correspondence relationship includes: UE level configuration: configuring the same first correspondence relationship for all cells configured for the UE; or cell group level configuration: each cell group is configured with the first correspondence relationship, all cells of the cell group use the same configured first correspondence relationship, and the first correspondence relationship can be configured independently between the cell groups; or cell level configuration: each cell is configured with the first correspondence relationship, and the first correspondence relationship can be configured independently between the cells.

[0157] The configuration of the second correspondence relationship includes: UE level configuration: configuring the same second correspondence relationship for all cells configured for the UE; or cell group level configuration: each cell group is configured with the second correspondence relationship, and all cells of the cell group use the same configured second correspondence relationship, and the second correspondence relationship can be configured independently between the cell groups; or cell level configuration: for cells configured for the UE, each cell is configured with the second correspondence relationship, and the second correspondence relationship can be configured independently between the cells.

[0158] Step 2 (904): The UE configures a first carrier, a second carrier, and a carrier frequency, and configures a first correspondence relationship and a second correspondence relationship.

[0159] The first correspondence relationship includes one first carrier corresponding to more than one second carrier, or M1 first carriers corresponding to N1 second carriers (1≦M1≦N1).

[0160] When one first carrier corresponds to more than one second carrier, the bandwidth of the one first carrier is equal to the sum of the bandwidths of the more than one second carrier; [ka] where: [ka] represents the bandwidth of the first carrier, [ka] represents the bandwidth of the jth second carrier.

[0161] If the M1 first carriers correspond to the N1 second carriers, the sum of the bandwidths of the M1 first carriers is equal to the sum of the bandwidths of the N1 second carriers; [ka] where: [ka] represents the bandwidth of the i-th first carrier, [ka] represents the bandwidth of the jth second carrier.

[0162] The second correspondence relationship includes that one second carrier corresponds to one carrier frequency, or that one second carrier corresponds to multiple carrier frequencies.

[0163] Furthermore, the first carrier is mapped to more than one second carrier. A portion of the set of subcarriers of the first carrier is mapped to one of the corresponding second carriers, and another portion of the set of subcarriers is mapped to another of the corresponding second carriers. The subcarriers of the first carrier are mapped to one of the corresponding second carriers. The subcarriers of the second carrier are mapped to a frequency domain range corresponding to one or more carrier frequencies, and each subcarrier of the second carrier mapped to a carrier frequency corresponds to an absolute frequency, and the subcarriers of the second carrier mapped to a carrier frequency correspond to an absolute frequency point. The subcarriers of the second carrier mapped to a carrier frequency correspond to one or more frequency band indications.

[0164] As shown in Figure 10, this is an example in which two first carriers are mapped to three second carriers. A first portion of the set of subcarriers for first carrier 1 is mapped to second carrier 1, a second portion of the set of subcarriers for first carrier 1 is mapped to second carrier 2, a first portion of the set of subcarriers for first carrier 2 is mapped to second carrier 2, and a second portion of the set of subcarriers for first carrier 2 is mapped to second carrier 3. First carrier 1 and first carrier 2 share the bandwidth of second carrier 2. The bandwidth of first carrier 1 is equal to the sum of the bandwidth of second carrier 1 and the bandwidth of the portion of second carrier 2 mapped by first carrier 1. The bandwidth of first carrier 2 is equal to the sum of the bandwidth of second carrier 3 and the bandwidth of the portion of second carrier 2 mapped by first carrier 2.

[0165] For example, a first carrier with 30 KHz subcarrier spacing and 100 M bandwidth corresponds to four second carriers: a second carrier with 30 KHz subcarrier spacing and 10 M bandwidth, a second carrier with 30 KHz subcarrier spacing and 30 M bandwidth, a second carrier with 30 KHz subcarrier spacing and 25 M bandwidth, and a second carrier with 30 KHz subcarrier spacing and 35 M bandwidth. The four second carriers correspond to four carrier frequencies, 730 MHz to 740 MHz, 791 MHz to 821 MHz, 869 MHz to 894 MHz, and 925 MHz to 960 MHz, respectively.

[0166] A first radio resource control information element (RRC IE) configuration method is used.

[0167] The configuration information for the first carrier includes that the carrier index field is configured to be 1, the subcarrier spacing field is configured to be 30 KHz, the carrier bandwidth field is configured to be 100 MHz, and the corresponding second carrier index list fields are configured to be 1, 2, 3, and 4, respectively.

[0168] The configuration information of the first second carrier includes that the carrier index field is configured to be 1, the subcarrier spacing field is configured to be 30 KHz, the carrier bandwidth field is configured to be 10 MHz, and the corresponding carrier frequency index list field is configured to be 1.

[0169] The configuration information for the second carrier includes that the carrier index field is configured to be 2, the subcarrier spacing field is configured to be 30 KHz, the carrier bandwidth field is configured to be 30 MHz, and the corresponding carrier frequency index list field is configured to be 2.

[0170] The configuration information of the third second carrier includes that the carrier index field is configured to 3, the subcarrier spacing field is configured to 30 KHz, the carrier bandwidth field is configured to 25 MHz, and the corresponding carrier frequency index list field is configured to 3.

[0171] The configuration information of the fourth second carrier includes that the carrier index field is configured to 4, the subcarrier spacing field is configured to 30 KHz, the carrier bandwidth field is configured to 35 MHz, and the corresponding carrier frequency index list field is configured to 4.

[0172] The configuration information of the first carrier frequency includes that the carrier frequency index field is configured as 1, the absolute frequency point field is configured as 735 MHz, the carrier frequency bandwidth field is configured as 10 MHz, and the corresponding frequency band list field is configured as n12.

[0173] The configuration information of the first carrier frequency includes that the carrier frequency index field is configured to 2, the absolute frequency field is configured to 806 MHz, the carrier frequency bandwidth field is configured to 30 MHz, and the corresponding frequency band list field is configured to n20.

[0174] The configuration information of the second carrier frequency includes that the carrier frequency index field is configured to 3, the absolute frequency field is configured to 882 MHz, the carrier frequency bandwidth field is configured to 25 MHz, and the corresponding frequency band list field is configured to n5.

[0175] The configuration information of the fourth carrier frequency includes that the carrier frequency index field is configured to 4, the absolute frequency point field is configured to 943 MHz, the carrier frequency bandwidth field is configured to 35 MHz, and the corresponding frequency band list field is configured to n8.

[0176] Therefore, in some embodiments, the UE obtains the above nine pieces of configuration information and configures that a first carrier 1 having a bandwidth of 100 MHz corresponds to a second carrier 1 having a bandwidth of 10 MHz, a second carrier 2 having a bandwidth of 30 MHz, a second carrier 3 having a bandwidth of 25 MHz, and a second carrier 4 having a bandwidth of 35 MHz. The four second carriers correspond to carrier frequency 1 having a bandwidth of 10 MHz, carrier frequency 2 having a bandwidth of 30 MHz, carrier frequency 3 having a bandwidth of 25 MHz, and carrier frequency 4 having a bandwidth of 35 MHz, respectively. Thus, the absolute frequency ranges corresponding to the first carriers are 730 MHz to 740 MHz, 791 MHz to 821 MHz, 869 MHz to 894 MHz, and 925 MHz to 960 MHz, and the corresponding frequency band indication indexes are n12, n20, n5, and n8. Embodiment 3:

[0177] This embodiment mainly provides a method in which one carrier corresponds to one first carrier frequency, and the first carrier frequency corresponds to more than one second carrier frequency. The bandwidth of the carrier is equal to the bandwidth of the first carrier frequency, and its bandwidth is equal to the sum of the bandwidths of more than one second carrier frequency. Therefore, the carrier can correspond to a larger bandwidth and transmit a larger transmission block, thereby improving spectral efficiency and solving the problem of low transmission efficiency of fragmented carriers.

[0178] As shown in Figure 11, one carrier corresponds to one first carrier frequency, and the first carrier frequency corresponds to three second carrier frequencies. First carrier frequency 1 corresponds to second carrier frequency 1, second carrier frequency 2, and second carrier frequency 3. Bandwidth 4 (bandwidth of first carrier frequency 1) is equal to the sum of bandwidth 1 (bandwidth of second carrier frequency 1), bandwidth 2 (bandwidth of second carrier frequency 2), and bandwidth 3 (bandwidth of second carrier frequency 3). Carrier 1 corresponds to first carrier frequency 1, and the bandwidth of carrier 1 is equal to the bandwidth of first carrier frequency 1.

[0179] A carrier includes one set of subcarriers with a subcarrier spacing, and the carrier corresponds to a reference subcarrier spacing. Each set of subcarriers corresponds to a subcarrier spacing configuration μ, which is used to indicate the subcarrier spacing of the set of subcarriers. The subcarrier spacing configuration μ can be 0, 1, 2, ..., which correspond to two subcarrier spacings of the reference subcarrier spacing, respectively. μ Each subcarrier of a carrier corresponds to one RE, and 12 REs correspond to one RB. Thus, a carrier includes one or more RE sets or RB sets.

[0180] A carrier is associated with one resource grid. The subcarriers of the resource grid are mapped to the subcarriers of the carrier. Information about REs of the resource grid is mapped to the REs of the carrier, and information about RBs of the resource grid is mapped to the RBs of the carrier. A carrier is associated with one or more BWPs. The subcarriers of the BWPs are mapped to the subcarriers of the carrier. Information about REs or RBs of the BWPs is mapped to REs or RBs of the carrier.

[0181] A carrier may be associated with baseband processing such as resource mapping. Radio resources associated with the baseband processing may be mapped to REs or RBs of a carrier. For example, a physical channel and / or a physical reference signal may be mapped to REs or RBs of a carrier, or a physical channel and / or a physical reference signal may be mapped to REs or RBs of a resource grid, and information related to REs or RBs of the resource grid may be mapped to REs or RBs of a carrier, or a physical channel and / or a physical reference signal may be mapped to REs or RBs of a BWP, and information related to REs or RBs of the BWP may be mapped to REs or RBs of a carrier, or a physical channel and / or a physical reference signal may be mapped to REs or RBs of a BWP, and information related to REs or RBs of the BWP may be mapped to REs or RBs of a resource grid, and information related to REs or RBs of the resource grid may be mapped to REs or RBs of a carrier.

[0182] The first carrier frequency corresponds to a frequency range corresponding to a frequency domain reference point and a bandwidth, for example, the frequency domain reference point is 1.8 GHz and the bandwidth is 100 MHz. The second carrier frequency corresponds to an absolute frequency range, such as 2500 MHz to 2550 MHz. The second carrier frequency corresponds to an absolute center frequency and a bandwidth, for example, the absolute center frequency is 2.6 GHz and the bandwidth is 50 MHz.

[0183] In this embodiment, one first carrier frequency corresponds to more than one second carrier frequency, and one or more carriers correspond to one or more first carrier frequencies. The first carrier frequency is mapped to more than one second carrier frequency. The frequency range of the first carrier frequency is mapped to the frequency range of more than one second carrier frequency. A portion of the frequency range of the first carrier frequency is mapped to one frequency range of more than one second carrier frequency, and another portion of the frequency range of the first carrier frequency is mapped to another frequency range of more than one second carrier frequency. The bandwidth of the first carrier frequency is equal to the sum of the bandwidths of the corresponding more than one second carrier frequencies.

[0184] One carrier is mapped to one corresponding first carrier frequency, or one carrier is mapped to multiple carrier frequencies. Subcarriers of the carrier are mapped to the frequency range of the first carrier frequency. When one carrier corresponds to one first carrier frequency, the bandwidth of the carrier is equal to the bandwidth of the first carrier frequency. When one carrier corresponds to multiple first carrier frequencies, the bandwidth of the carrier is equal to the sum of the bandwidths of the multiple first carrier frequencies.

[0185] For example, one carrier corresponds to one first carrier frequency, and this first carrier frequency corresponds to two second carrier frequencies. The two second carrier frequencies are 2450 MHz to 2480 MHz and 2500 MHz to 2530 MHz, respectively. The first carrier frequency is mapped to two second carrier frequencies, so that the first carrier frequency corresponds to two different absolute frequency ranges: 2450 MHz to 2480 MHz and 2500 MHz to 2530 MHz. The bandwidth of the first carrier frequency is equal to the sum of the bandwidths of the two second carrier frequencies, which is 30 MHz + 30 MHz = 60 MHz. The carrier is mapped to the first carrier frequency corresponding to the two different frequency ranges: 2450 MHz to 2480 MHz and 2500 MHz to 2530 MHz, and the bandwidth of 60 MHz.

[0186] Currently, due to the auction-style spectrum resource allocation method and the reclaiming of spectrum resources occupied by 2G / 3G networks, there are many fragmented spectrum resources, especially FDD spectrum. Most spectrum resources have a bandwidth of 30M or less, and spectrum fragmentation reduces the utilization efficiency of spectrum resources. According to this method, a carrier can simultaneously operate on more than one fragmented frequency spectrum. A carrier corresponds to one or more first carrier frequencies, each of which corresponds to more than one second carrier frequency with a smaller bandwidth. The carrier's bandwidth is equal to the bandwidth of one first carrier frequency or the sum of the bandwidths of multiple first carrier frequencies, and the bandwidth of each first carrier frequency is the sum of the bandwidths of more than one second carrier frequency. This creates carriers with larger bandwidths, thereby improving the utilization efficiency of spectrum resources.

[0187] For example, if one carrier corresponds to one first carrier frequency, and the first carrier frequency corresponds to 10 second carrier frequencies, each having a bandwidth of 10M, the bandwidth of the carrier is equal to the bandwidth of the first carrier frequency, which is equal to the sum of the bandwidths of the 10 second carrier frequencies, which is equal to 100M.

[0188] In a transmitting communication node such as a base station or a terminal, the mapping of the carrier to the second carrier frequency can be performed in a module responsible for radio frequency processing, which includes, but is not limited to, filtering, digital and analog signal conversion, power amplification, and frequency shifting. In this module, signals on the carrier from a module responsible for baseband processing are mapped to a corresponding first carrier frequency. The mapping from the first carrier frequency to the second carrier frequency can be performed in the module responsible for radio frequency processing. Multiple filters may be used to map the first carrier frequency to more than one second carrier frequency. Other methods can also be used to map the first carrier frequency to more than one corresponding second carrier frequency. For example, in a radio frequency processing module, a carrier is mapped to a first carrier frequency, and the physical channel mapped to the carrier is also mapped to the first carrier frequency. The first carrier frequency and the mapped physical channel are then mapped to two second carrier frequencies. In this way, one physical channel can be transmitted on two different carrier frequencies, i.e., one physical channel can be transmitted over two different frequency ranges. The two frequency ranges can be adjacent, non-adjacent, or overlapping.

[0189] FIG. 12 is a flowchart of the UE side processing of the method of the present invention in this embodiment, and the steps include:

[0190] Step 1 (1202): The UE receives third configuration information, where the configuration information includes a first carrier frequency configuration, a second carrier frequency configuration, and a carrier configuration.

[0191] The configuration information includes a first correspondence relationship between the first carrier frequency and the second carrier frequency, and the first correspondence relationship may be included in the first carrier frequency configuration information, the second carrier frequency configuration information, or may be separately indicated.

[0192] The configuration information includes a second correspondence relationship between the first carrier frequency and the carrier, and the second correspondence relationship may be included in the carrier configuration information, the first carrier frequency configuration information, or may be separately indicated.

[0193] The first correspondence relationship between the first carrier frequencies and the second carrier frequencies includes a correspondence relationship between one first carrier frequency and more than one second carrier frequency, or between multiple first carrier frequencies and multiple second carrier frequencies.

[0194] When one first carrier frequency corresponds to more than one second carrier frequency, the bandwidth of the one first carrier frequency is equal to the sum of the bandwidths of the more than one second carrier frequency; [ka] where BW SF represents the bandwidth of the first carrier frequency, [ka] represents the bandwidth of the j-th second carrier frequency.

[0195] For M2 first carrier frequencies corresponding to N2 second carrier frequencies, where 1≦M2≦N2, the sum of the bandwidths of the M2 first carrier frequencies is equal to the sum of the bandwidths of the N2 second carrier frequencies; [ka] where: [ka] represents the bandwidth of the i-th first carrier frequency, [ka] represents the bandwidth of the j-th second carrier frequency.

[0196] A second correspondence relationship between a carrier and a first carrier frequency is that one carrier corresponds to one or more first carrier frequencies, and the bandwidth of the carrier is equal to the bandwidth of the first carrier frequency, or the bandwidth of the carrier is equal to the sum of the bandwidths of multiple first carrier frequencies.

[0197] In the prior art, a carrier corresponds to one or more frequency band information and a frequency domain reference point, Point A. A carrier configuration includes a frequency domain offset relative to the frequency domain reference point, Point A, a bandwidth, and a subcarrier spacing. A frequency domain information configuration includes a frequency band list, a frequency domain reference point, Point A, and a carrier configuration list. In this way, the carrier, the frequency band, and the frequency domain reference point, Point A, have a corresponding relationship.

[0198] for example, [ka]

[0199] Here, frequencyBandList represents the frequency band corresponding to the carrier, absoluteFrequencyPointA represents the frequency domain location of the frequency domain reference point PointA, here represented by ARFCN, and scs-SpecificCarrierList represents the list of carrier configurations. [ka]

[0200] where SCS-SpecificCarrier represents the carrier configuration, offsetToCarrier represents the frequency domain offset between the carrier and the frequency domain reference point PointA, which determines the frequency domain location of the carrier, subcarrierSpacing represents the subcarrier spacing of the carrier, and carrierBandwidth represents the carrier bandwidth. ARFCN is the absolute radio frequency channel number. FreqBandIndicator represents the frequency band indicator used to indicate the frequency band.

[0201] In some embodiments, the carrier configuration includes a carrier index, a subcarrier spacing, and a bandwidth. The first carrier frequency configuration includes a first carrier frequency index, a frequency domain reference point PointA, and a bandwidth. The second carrier frequency configuration includes a second carrier frequency index, an absolute center frequency point, a bandwidth, and a corresponding frequency band.

[0202] The first correspondence configuration is: the first carrier frequency configuration includes an index of the second carrier frequency; or the first carrier frequency configuration includes an index of the second carrier frequency; or the second carrier frequency configuration includes an index of the first carrier frequency; Alternatively, the one piece of configuration information includes a first carrier frequency index and a second carrier frequency index.

[0203] The second correspondence relationship configuration includes: the carrier configuration includes an index of a first carrier frequency; the carrier configuration includes a configuration of a first carrier frequency; the first carrier frequency configuration includes an index of a carrier; or one piece of configuration information includes a carrier index and a first carrier frequency index.

[0204] In this embodiment, the first carrier frequency configuration, the second carrier frequency configuration, the carrier configuration, the first correspondence relationship configuration between the first carrier frequency and the second carrier frequency, and the second correspondence relationship configuration between the carrier and the first carrier frequency can be represented by a resource control information element (RRC IE), including at least one of the following methods:

[0205] Method 3.1:

[0206] The first radio resource control information element (RRC IE) represents configuration information of the first carrier frequency, including a first carrier frequency index, a frequency domain reference point Point A, a first carrier frequency bandwidth, and a list of corresponding second carrier frequency indexes. The second radio resource control information element (RRC IE) represents configuration information of the second carrier frequency, including a second carrier frequency index, an absolute frequency, a second carrier frequency bandwidth, and a list of corresponding frequency bands.

[0207] The third radio resource control information element (RRC IE) represents carrier configuration information, including a carrier index, a subcarrier spacing, a carrier bandwidth, and a list of corresponding first carrier frequency indexes.

[0208] moreover, [ka]

[0209] where "first carrier frequency index" represents the index of the first carrier frequency, "first carrier frequency bandwidth" represents the bandwidth of the first carrier frequency, "corresponding second carrier frequency index list" represents the second carrier frequency index corresponding to the first carrier frequency, "frequency domain reference point PointA" represents the absolute frequency of the frequency domain reference point, "absolute frequency point" represents the absolute frequency point of the second carrier frequency, "first carrier frequency bandwidth" represents the bandwidth of the first carrier frequency, "second carrier frequency bandwidth" represents the bandwidth of the second carrier frequency, "corresponding frequency band list" represents the frequency band corresponding to the second carrier frequency, "carrier index" represents the index of the carrier, "subcarrier spacing" represents the subcarrier spacing of the carrier, and "corresponding first carrier frequency index list" represents the first carrier frequency index corresponding to the carrier. "ARFCN" is the absolute radio frequency channel number. "FreqBandIndicator" represents the frequency band indicator used to indicate the frequency band. "maxValue" is the maximum value.

[0210] Method 3.2:

[0211] The first radio resource control information element (RRC IE) represents configuration information of the first carrier frequency, including a first carrier frequency index, a frequency domain reference point Point A, and a first carrier frequency bandwidth. The second radio resource control information element (RRC IE) represents configuration information of the second carrier frequency, including a second carrier frequency index, an absolute frequency, a second carrier frequency bandwidth, a list of corresponding frequency bands, and a corresponding first carrier frequency index. The third radio resource control information element (RRC IE) represents carrier configuration information, including a carrier index, a subcarrier spacing, a carrier bandwidth, and a list of corresponding first carrier frequency indexes.

[0212] moreover, [ka]

[0213] where "first carrier frequency index" represents the index of the first carrier frequency, "first carrier frequency bandwidth" represents the bandwidth of the first carrier frequency, "corresponding first carrier frequency index" represents the first carrier frequency index corresponding to the second carrier frequency, "frequency domain reference point PointA" represents the absolute frequency of the frequency domain reference point, "absolute frequency point" represents the absolute frequency point of the second carrier frequency, "first carrier frequency bandwidth" represents the bandwidth of the first carrier frequency, "second carrier frequency bandwidth" represents the bandwidth of the second carrier frequency, "corresponding frequency band list" represents the frequency band corresponding to the second carrier frequency, "carrier index" represents the index of the carrier, "subcarrier spacing" represents the subcarrier spacing of the carrier, and "corresponding first carrier frequency index list" represents the corresponding first carrier frequency index of the carrier. ARFCN is the absolute radio frequency channel number. FreqBandIndicator represents the frequency band indicator used to indicate the frequency band. maxValue is the maximum value.

[0214] Method 3.3:

[0215] The first radio resource control information element (RRC IE) represents configuration information of a first carrier frequency, including a first carrier frequency index, a frequency domain reference point Point A, and a first carrier frequency bandwidth. The second radio resource control information element (RRC IE) represents configuration information of a second carrier frequency, including a second carrier frequency index, an absolute frequency, a second carrier frequency bandwidth, and a list of corresponding frequency bands. The third radio resource control information element (RRC IE) represents carrier configuration information, including a carrier index, a subcarrier spacing, a carrier bandwidth, and a corresponding first carrier frequency index. The fourth radio resource control information element (RRC IE) represents configuration information of the correspondence between a first carrier frequency and a second carrier frequency, including a list, where each element in the list mainly consists of two parts: a first carrier frequency index and a list of second carrier frequency indexes.

[0216] moreover, [ka]

[0217] Here, "first carrier frequency index" represents the index of the first carrier frequency, "first carrier frequency bandwidth" represents the bandwidth of the first carrier frequency, "frequency domain reference point PointA" represents the absolute frequency of the frequency domain reference point, "absolute frequency point" represents the absolute frequency of the second carrier frequency, "first carrier frequency bandwidth" represents the bandwidth of the first carrier frequency, "second carrier frequency bandwidth" represents the bandwidth of the second carrier frequency, "corresponding frequency band list" represents the frequency band corresponding to the second carrier frequency, "carrier index" represents the index of the carrier, "subcarrier spacing" represents the subcarrier spacing of the carrier, "corresponding first carrier frequency index" represents the first carrier frequency index corresponding to the carrier, and "correspondence between first carrier frequency and second carrier frequency" represents the correspondence between the first carrier frequency (indicated by the first carrier frequency index) and the second carrier frequency (indicated by the second carrier frequency index list). The correspondence between the first carrier frequency and the second carrier frequency can be configured as a correspondence between one first carrier frequency and more than one second carrier frequency, which means that one first carrier frequency corresponds to more than one second carrier frequency.The correspondence between the first carrier frequency and the second carrier frequency list can be configured to include multiple correspondences, each of which represents a correspondence between one first carrier frequency and more than one second carrier frequency, meaning that the multiple first carrier frequencies correspond to the multiple second carrier frequencies. If the correspondence between the first carrier frequency and the second carrier frequency list includes only one correspondence between one first carrier frequency and more than one second carrier frequency, meaning that the single first carrier frequency corresponds to more than one second carrier frequency. ARFCN is the absolute radio frequency channel number. FreqBandIndicator represents a frequency band indicator used to indicate a frequency band.

[0218] The first correspondence relationship is configured through an RRC message, where the RRC message includes an RRC setup, an RRC Reconfiguration, a ReconfigurationWithSync, or a system message. The system message includes SIB1.

[0219] The second correspondence relationship is configured through an RRC message, where the RRC message includes an RRC setup, an RRC Reconfiguration, a ReconfigurationWithSync, or a system message. The system message includes SIB1.

[0220] Furthermore, a system message received by a UE in an IDLE or INACTIVE state includes the first correspondence. An RRCsetup and / or RRCReconfiguration received by a UE in a CONNECTED state includes the first correspondence. During a cell handover process, a ReconfigurationWithSync received by the UE includes the first correspondence. The first correspondence is modified by higher layer signaling, and the higher layer signaling includes RRCReconfiguration.

[0221] A system message received by a UE in an IDLE or INACTIVE state includes the second correspondence. An RRCsetup and / or RRCReconfiguration message received by a UE in a CONNECTED state includes the second correspondence. During a cell handover process, a ReconfigurationWithSync message received by the UE includes the second correspondence. The second correspondence is modified by higher layer signaling, and the higher layer signaling includes RRCReconfiguration.

[0222] The configuration of the first correspondence relationship includes: UE level configuration: the UE is configured with the same first correspondence relationship for all configured cells; or cell group level configuration: the UE is configured with the first correspondence relationship for each cell group, and all cells of the cell group use the same configured first correspondence relationship, and the first correspondence relationship is configured independently between cell groups; or cell level configuration: the UE is configured with the first correspondence relationship for each cell, and the first correspondence relationship can be configured independently between cells.

[0223] The configuration of the second correspondence relationship includes: UE level configuration: the UE is configured with the same second correspondence relationship for all configured cells; or cell group level configuration: the UE is configured with the second correspondence relationship for each cell group, and all cells of the cell group use the same configured second correspondence relationship, and the second correspondence relationship is configured independently between cell groups; or cell level configuration: the UE is configured with the second correspondence relationship for each cell, and the second correspondence relationship can be configured independently between cells.

[0224] Step 2 (1204): The UE configures a first carrier frequency, a second carrier frequency, and a carrier, and configures a first correspondence relationship and a second correspondence relationship.

[0225] The first correspondence relationship includes one first carrier frequency corresponding to more than one second carrier frequency, or M2 first carrier frequencies corresponding to N2 second carrier frequencies (1≦M2≦N2).

[0226] When one first carrier frequency corresponds to more than one second carrier frequency, the bandwidth of the one first carrier frequency is equal to the sum of the bandwidths of the more than one second carrier frequency; [ka] where: [ka] represents the bandwidth of the first carrier frequency, [ka] represents the bandwidth of the j-th second carrier frequency.

[0227] When the M2 first carrier frequencies correspond to the N2 second carrier frequencies, the sum of the bandwidths of the M2 first carrier frequencies is equal to the sum of the bandwidths of the N2 second carrier frequencies; [ka] where: [ka] represents the bandwidth of the i-th first carrier frequency, [ka] represents the bandwidth of the j-th second carrier frequency.

[0228] The second correspondence includes one or more carriers corresponding to one or more second carrier frequencies. Furthermore, a carrier is mapped to a frequency range of one or more first carrier frequencies. Subcarriers of a carrier are mapped to a frequency range of the first carrier frequencies. A frequency range of one first carrier frequency is mapped to a frequency range corresponding to more than one second carrier frequency, a portion of the frequency range of the first carrier frequency is mapped to a frequency range of one of the second carrier frequencies, and another portion of the frequency range of the first carrier frequency is mapped to a frequency range of another second carrier frequency. A first carrier frequency mapped to a second carrier frequency corresponds to more than one absolute frequency range, and a first carrier frequency mapped to a second carrier frequency corresponds to more than one frequency band.

[0229] For example, a carrier with a subcarrier spacing of 30 KHz and a bandwidth of 100 M corresponds to a first carrier frequency with a bandwidth of 100 M, and the first carrier frequency corresponds to four second carrier frequencies: 730 MHz to 740 MHz, 791 MHz to 821 MHz, 869 MHz to 894 MHz, and 925 MHz to 960 MHz.

[0230] Some embodiments may use a first radio resource control information element (RRC IE) configuration method, in which the carrier configuration information includes: a carrier index field configured to be 1; a subcarrier spacing field configured to be 30 KHz; a carrier bandwidth field configured to be 100 MHz; and a corresponding second carrier frequency list field configured to be 1.

[0231] The configuration information of the first carrier frequency includes that the carrier frequency index field is configured to be 1, the frequency domain reference point field is configured to be 842 MHz, the carrier frequency bandwidth field is configured to be 100 MHz, and the corresponding second carrier frequency index list field is configured to be 1, 2, 3, 4.

[0232] The configuration information of the first and second carrier frequencies includes that the carrier frequency index field is configured as 1, the absolute center frequency field is configured as 735 MHz, the carrier frequency bandwidth field is configured as 10 MHz, and the corresponding frequency band list field is configured as n12.

[0233] The configuration information of the second second carrier frequency includes that the carrier frequency index field is configured to 2, the absolute center frequency field is configured to 806 MHz, the carrier frequency bandwidth field is configured to 30 MHz, and the corresponding frequency band list field is configured to n20. The configuration information of the third second carrier frequency includes that the carrier frequency index field is configured to 3, the absolute center frequency field is configured to 882 MHz, the carrier frequency bandwidth field is configured to 25 MHz, and the corresponding frequency band list field is configured to n5.

[0234] The configuration information of the fourth second carrier frequency includes that the carrier frequency index field is configured to 4, the absolute center frequency field is configured to 943 MHz, the carrier frequency bandwidth field is configured to 35 MHz, and the corresponding frequency band list field is configured to n8.

[0235] The UE obtains the above six pieces of configuration information and configures that carrier 1 having a bandwidth of 100 MHz corresponds to first carrier frequency 1 having a bandwidth of 100 MHz. This first carrier frequency corresponds to second carrier frequency 1 having a bandwidth of 10 MHz, second carrier frequency 2 having a bandwidth of 30 MHz, second carrier frequency 3 having a bandwidth of 25 MHz, and second carrier frequency 4 having a bandwidth of 35 MHz. Therefore, the absolute frequency ranges corresponding to the carriers are 730 MHz to 740 MHz, 791 MHz to 821 MHz, 869 MHz to 894 MHz, and 925 MHz to 960 MHz, and the frequency band indications corresponding to the carriers are n12, n20, n5, and n8.

[0236] FIG. 13 is an example of mapping two first carrier frequencies to three second carrier frequencies.

[0237] A first portion of the frequency range of the first carrier frequency 1 is mapped to the second carrier frequency 1, a second portion of the frequency range of the first carrier frequency 1 is mapped to the second carrier frequency 2, a first portion of the frequency range of the first carrier frequency 2 is mapped to the second carrier frequency 2, and a second portion of the frequency range of the first carrier frequency 2 is mapped to the second carrier frequency 3. The first carrier frequency 1 and the first carrier frequency 2 share the frequency range of the second carrier frequency 2. The bandwidth of the first carrier frequency 1 is equal to the sum of the bandwidth of the second carrier frequency 1 and the bandwidth of the portion of the second carrier frequency 2 mapped by the first carrier frequency 1. The bandwidth of the first carrier frequency 2 is equal to the sum of the bandwidth of the second carrier frequency 3 and the bandwidth of the portion of the second carrier frequency 2 mapped by the first carrier frequency 2.

[0238] Embodiment 4:

[0239] In this embodiment, the UE reports capability information indicating whether the UE can support one carrier corresponding to more than one carrier frequency.

[0240] FIG. 14 is a flowchart of the UE side processing of the method of the present invention in this embodiment, and the steps include:

[0241] Step 1 (1402): The UE reports capability information indicating whether the UE supports carrier configuration, carrier frequency configuration, and carrier-to-carrier frequency correspondence configuration. Generally, the UE reports the capability information to a network device. In a sidelink scenario, a receiving UE (RX UE) reports the capability information to a transmitting UE (TX UE).

[0242] Step 2 (1404): The UE receives indication information indicating whether the UE uses a carrier configuration, a carrier frequency configuration, and a configuration of a correspondence relationship between a carrier and a carrier frequency. If the UE receives indication information indicating that the UE cannot use the configuration, it does not need to receive configuration information for the UE. The UE determines whether to receive configuration information based on the received indication information. Generally, the UE receives indication information transmitted by a network device. In a sidelink scenario, the RX UE receives indication information transmitted by the TX UE.

[0243] The indication information may include a field with two options: true or false. If the field is set to true, it indicates that the UE can use the configuration information. If not, the UE cannot use the configuration information.

[0244] The indication information may include: UE level indication information: the UE uses the same indication information for all configured cells; or cell group level indication information: the indication information is the same for all cells in a cell group and the indication information between cell groups is independent; or cell level indication information: the indication information between cells is independent.

[0245] A system message received by a UE in IDLE or INACTIVE state includes the indication information, and an RRCsetup and / or RRCReconfiguration received by a UE in CONNECTED state includes the indication information. The indication information is modified by the received RRCReconfiguration. During a cell handover process, a ReconfigurationWithSync received by a UE includes the indication information.

[0246] Step 3 (1406): The UE receives fourth configuration information. The configuration information includes a carrier configuration and a carrier frequency configuration. The configuration information includes a correspondence relationship between the carrier and the carrier frequency. The correspondence relationship may be included in the carrier configuration information, the carrier frequency configuration information, or may be indicated separately.

[0247] The correspondence between carriers and carrier frequencies includes a correspondence between one carrier and more than one carrier frequency, or a correspondence between M5 carriers and N5 carrier frequencies (1≦M5≦N5).

[0248] If one carrier corresponds to more than one carrier frequency, the bandwidth of one carrier is equal to the sum of the bandwidths of the more than one carrier frequencies, [ka] where BWC represents the carrier bandwidth, [ka] represents the bandwidth of the j-th carrier frequency.

[0249] For M5 carriers corresponding to N5 carrier frequencies, with 1≦M5≦N5, the sum of the bandwidths of the M5 carriers is equal to the sum of the bandwidths of the N5 carrier frequencies; [ka] where: [ka] represents the bandwidth of the ith carrier, [ka] represents the bandwidth of the j-th carrier frequency.

[0250] In some embodiments, the carrier configuration includes a carrier index, a subcarrier spacing, and a bandwidth. The carrier frequency configuration includes a carrier frequency index, an absolute center frequency point in the ARFCN, a bandwidth, and a frequency band. The correspondence between the carrier and the carrier frequency includes one of the following methods: a carrier frequency index is included in the carrier configuration; a carrier configuration includes a carrier frequency configuration; a carrier frequency configuration includes a carrier index; a carrier configuration includes an array corresponding to carrier frequency information, each element in the array corresponds to one carrier frequency information, and the carrier frequency information includes an absolute frequency point, a bandwidth, and a frequency band list; or a piece of configuration information includes a carrier index and a carrier frequency index.

[0251] The configuration of radio resource control information elements (RRC IEs) and carriers, the configuration of carrier frequencies, and the configuration method for configuring the correspondence relationship between carriers and carrier frequencies in this embodiment are the same as those in the first and first embodiments.

[0252] The correspondence between the carrier and the carrier frequency is configured through an RRC message, which may include an RRC setup, an RRC Reconfiguration, a ReconfigurationWithSync, or a system message, which may include an SIB1.

[0253] Furthermore, a system message received by a UE in an IDLE or INACTIVE state includes the correspondence, and an RRCsetup and / or RRCReconfiguration received by a UE in a CONNECTED state includes the correspondence. During a cell handover process, a ReconfigurationWithSync received by a UE includes the correspondence. The correspondence between carriers and carrier frequencies is modified by higher layer signaling, and the higher layer signaling includes RRCReconfiguration.

[0254] The configuration of the correspondence between carriers and carrier frequencies includes: UE-level configuration: the UE is configured with the same correspondence for all configured cells; or cell-group-level configuration: the UE is configured with one correspondence for each cell group, and the correspondence is the same for all cells in the cell group, and the correspondence can be configured independently between cell groups; or cell-level configuration: the UE is configured with one correspondence for each cell, and the correspondence can be configured independently between cells.

[0255] Step 4 (1408): The UE configures a carrier and a carrier frequency, and configures a correspondence relationship between the carrier and the carrier frequency.

[0256] The correspondence between carriers and carrier frequencies includes one carrier corresponding to more than one carrier frequency, or M5 carriers corresponding to N5 carrier frequencies (1≦M5≦N5).

[0257] If one carrier corresponds to more than one carrier frequency, the bandwidth of one carrier is equal to the sum of the bandwidths of the more than one carrier frequencies, [ka] where: [ka] represents the carrier bandwidth, [ka] represents the bandwidth of the j-th carrier frequency.

[0258] If M5 carriers correspond to N5 carrier frequencies, then the sum of the bandwidths of the M5 carriers is equal to the sum of the bandwidths of the N5 carrier frequencies, [ka] where: [ka] represents the bandwidth of the ith carrier, [ka] represents the bandwidth of the j-th carrier frequency.

[0259] Furthermore, a carrier may be mapped to more than one carrier frequency, in which case the carrier may correspond to more than one different frequency range. A portion of the set of subcarriers of a carrier may be mapped to a frequency range of one carrier frequency, and another portion of the set of subcarriers of a carrier may be mapped to a frequency range of another carrier frequency. Each subcarrier of a carrier may correspond to an absolute frequency. The subcarriers of a carrier mapped to a carrier frequency may correspond to an absolute center frequency. The subcarriers of a carrier mapped to a carrier frequency may correspond to one or more frequency band indications.

[0260] FIG. 15 illustrates an example of a wireless communication system (e.g., a Long Term Evolution (LTE), 5G, or NR cellular network, or a next-generation network beyond 5G, such as a sixth-generation network) including a base station (BS) 120 and one or more user equipments (UEs) 111, 112, and 113. The base stations, which are network devices, may be implemented on land (e.g., cell phone towers) or in the air (e.g., satellites or air vehicles). In some embodiments, the uplink transmissions (131, 132, 133) may include uplink control information (UCI), higher layer signaling (e.g., UE assistance information or UE capabilities), or uplink information. In some embodiments, the downlink transmissions (141, 142, 143) may include DCI or higher layer signaling or downlink information. The UEs may be, for example, smartphones, tablets, mobile computers, machine-to-machine (M2M) devices, terminals, mobile devices, Internet of Things (IoT) devices, etc.

[0261] FIG. 16 is a block diagram representation of a portion of an apparatus according to some embodiments of the techniques of this disclosure. An apparatus 1705, such as a network device or base station or wireless device (or UE), may include processor electronics 1710, such as a microprocessor, that implements one or more of the techniques presented herein. The apparatus 1705 may include transceiver electronics 1715 that transmits and / or receives wireless signals via one or more communication interfaces, such as antenna(s) 1720. The apparatus 1705 may include other communication interfaces for transmitting and receiving data. The apparatus 1705 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some implementations, the processor electronics 1710 may include at least a portion of the transceiver electronics 1715. In some embodiments, at least some of the disclosed techniques, modules, or functionality are implemented using the apparatus 1705.

[0262] In some embodiments, the following solution may preferably be implemented.

[0263] A first set of preferred solutions may include (eg as described with reference to embodiment 1):

[0264] 1. A method of wireless communication (e.g., method 1710 shown in FIG. 17A ), comprising: receiving, by a wireless device, radio configuration information for a wireless network including a carrier configuration and a carrier frequency configuration 1712, where the radio configuration information indicates a correspondence between carriers in the carrier configuration and one or more carrier frequencies in the carrier frequency configuration 1712; and operating the wireless device in accordance with the radio configuration information 1714. For example, the wireless device may configure the carriers, carrier frequencies, and correspondences to operate in the wireless network in accordance with the radio configuration information.

[0265] 2. The method of claim 1, wherein a portion of the set of subcarriers of a carrier is mapped to one frequency range of more than one carrier frequency and another portion of the set of subcarriers of the carrier is mapped to another frequency range of more than one carrier frequency.

[0266] 3. The method of claim 2, wherein the frequency resources of a carrier include frequency resources of more than one carrier frequency.

[0267] 4. The method according to any one of claims 1 to 3, wherein the bandwidth of the operating carrier is equal to the sum of the bandwidths of more than one carrier frequency.

[0268] 5. The method according to any one of claims 1 to 4, wherein the correspondence is indicated in a carrier configuration.

[0269] 6. The method according to any one of claims 1 to 4, wherein the correspondence is indicated in a carrier frequency configuration.

[0270] 7. The method according to any one of claims 1 to 4, wherein the correspondence is indicated in a separate configuration within the wireless configuration information.

[0271] 8. A method of wireless communication (e.g., method 1720 shown in FIG. 17B ), comprising transmitting (1722), by a network device, radio configuration information of a wireless network including a carrier configuration and a carrier frequency configuration to a wireless device, wherein the radio configuration information indicates a correspondence between carriers in the carrier configuration and more than one carrier frequency in the carrier frequency configuration.

[0272] 9. The method of claim 8, wherein a portion of the set of subcarriers of a carrier is mapped to one frequency range of the more than one carrier frequencies and another portion of the set of subcarriers of the carrier is mapped to another frequency range of the more than one carrier frequencies.

[0273] 10. The method of claim 9, wherein the frequency resources of a carrier include frequency resources of more than one carrier frequency.

[0274] 11. The method according to any of claims 8 to 10, wherein the bandwidth of the operating carrier is equal to the sum of the bandwidths of more than one carrier frequency.

[0275] 12. The method according to any one of claims 8 to 11, wherein the correspondence is indicated in a carrier configuration.

[0276] 13. The method according to any one of claims 8 to 11, wherein the correspondence is indicated in a carrier frequency configuration.

[0277] 14. The method according to any one of claims 8 to 11, wherein the correspondence is indicated in a separate configuration within the wireless configuration information.

[0278] A first set of preferred solutions may include (eg as described with reference to embodiment 2):

[0279] 1. A method of wireless communication (e.g., method 1730 shown in FIG. 17C ) comprising: receiving, by a wireless device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration 1732, where the radio configuration information includes a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between the second carrier and one or more carrier frequencies; and operating the wireless device in accordance with the radio configuration information 1734. For example, the wireless device may configure the first carrier, the second carrier, and the carrier frequencies, and the first correspondence and the second correspondence, to operate in a wireless network in accordance with the radio configuration information.

[0280] 2. The method of claim 1, wherein a portion of the set of subcarriers of a first carrier is mapped to a set of subcarriers of one of more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another one of the more than one second carriers.

[0281] 3. The method of claim 2, wherein the frequency resources of the first carrier include frequency resources of more than one second carrier.

[0282] 4. The method of any of claims 1 to 3, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of more than one second carrier.

[0283] 5. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier configuration or the second carrier configuration.

[0284] 6. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in a carrier frequency configuration.

[0285] 7. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in a separate configuration within the wireless configuration information.

[0286] 8. A method of wireless communication (e.g., method 1740 shown in FIG. 17D ), comprising transmitting (1742), by a network device, radio configuration information to a wireless device, the radio configuration information comprising a first carrier configuration, a second carrier configuration, and a carrier frequency configuration, the radio configuration information comprising a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between the second carrier and one or more carrier frequencies.

[0287] 9. The method of claim 8, wherein a portion of the set of subcarriers of a first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another one of the more than one second carriers.

[0288] 10. The method of claim 9, wherein the frequency resources of the first carrier include frequency resources of more than one second carrier.

[0289] 11. The method according to any one of claims 8 to 10, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of more than one second carrier.

[0290] 12. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier configuration or the second carrier configuration.

[0291] 13. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in a carrier frequency configuration.

[0292] 14. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in a separate configuration within the wireless configuration information.

[0293] A first set of preferred solutions may include (eg, as described with reference to embodiment 3):

[0294] 1. A method of wireless communication (e.g., method 1750 shown in FIG. 17E ) comprising: receiving, by a wireless device, radio configuration information including a first carrier frequency configuration, a second carrier frequency configuration, and a carrier configuration 1752, where the radio configuration information includes a first correspondence relationship between a first carrier frequency in the first carrier frequency configuration and more than one second carrier frequency in the second carrier frequency configuration, and a second correspondence relationship between the first carrier frequency and one or more operating carriers; and operating the wireless device in accordance with the radio configuration information 1754. For example, the wireless device may configure the first carrier frequency, the second carrier frequency, the first correspondence relationship, and the second correspondence relationship to operate in a wireless network in accordance with the radio configuration information.

[0295] 2. The method of claim 1, wherein a portion of a frequency range of a first carrier frequency is mapped to a frequency range of one of more than one second carrier frequencies, and another portion of the frequency range of the first carrier frequency is mapped to a frequency range of another of the more than one second carrier frequencies.

[0296] 3. The method of claim 2, wherein the frequency resources of the first carrier frequency include frequency resources of more than one second carrier frequency.

[0297] 4. The method according to any one of claims 1 to 3, wherein the bandwidth of the first carrier frequency is equal to the sum of the bandwidths of more than one second carrier frequency.

[0298] 5. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier frequency configuration or the second carrier frequency configuration.

[0299] 6. The method according to any one of claims 1 to 4, wherein the first correspondence or the second correspondence is indicated in a carrier configuration.

[0300] 7. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in a separate configuration within the wireless configuration information.

[0301] 8. A method of wireless communication (e.g., method 1760 shown in FIG. 17F ), comprising transmitting (1762), by a network device, radio configuration information to the wireless device, the radio configuration information comprising a first carrier frequency configuration, a second carrier frequency configuration, and a carrier configuration, the radio configuration information comprising a first correspondence relationship between a first carrier frequency in the first carrier frequency configuration and more than one second carrier frequency in the second carrier frequency configuration, and a second correspondence relationship between the first carrier frequency and one or more operating carriers.

[0302] 9. The method of claim 8, wherein a portion of a frequency range of the first carrier frequency is mapped to a frequency range of one of the more than one second carrier frequencies, and another portion of the frequency range of the first carrier frequency is mapped to a frequency range of another of the more than one second carrier frequencies.

[0303] 10. The method of claim 9, wherein the frequency resources of the first carrier frequency include frequency resources of more than one second carrier frequency.

[0304] 11. The method according to any one of claims 8 to 10, wherein the bandwidth of the first carrier frequency is equal to the sum of the bandwidths of more than one second carrier frequency.

[0305] 12. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier frequency configuration or the second carrier frequency configuration.

[0306] 13. The method according to any one of claims 8 to 11, wherein the first correspondence or the second correspondence is indicated in a carrier configuration.

[0307] 14. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in a separate configuration within the wireless configuration information.

[0308] Some solutions may include an apparatus for wireless communication comprising a processor configured to perform a method according to any of the solutions listed above.

[0309] Some solutions may include a computer-readable medium having stored thereon code that, when executed by a processor, causes the processor to perform a method as described in any of the above solutions.

[0310] It will be appreciated that the present disclosure provides several techniques that can be used in a wireless network. For example, more than one carrier frequency (radio frequency carrier) corresponding to one carrier (baseband carrier) can be implemented as follows:

[0311] 1) More than one carrier frequency (radio frequency carrier) corresponds to a carrier (baseband carrier), and the bandwidth of the carrier is equal to the sum of the bandwidths of these carrier frequencies.

[0312] 2) More than one carrier frequency (radio frequency carrier) corresponds to more than one second carrier (one type of baseband carrier), more than one second carrier corresponds to a first carrier (another type of baseband carrier), the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier, and the sum of the bandwidths of the more than one second carrier is equal to the sum of the bandwidths of the more than one carrier frequency.

[0313] 3) More than one second carrier frequency (one type of radio frequency carrier) corresponds to a first carrier frequency (another type of radio frequency carrier) that corresponds to a carrier (baseband carrier), and the bandwidth of the first carrier frequency is equal to the sum of the bandwidths of the more than one second carrier frequencies, and the bandwidth of the carrier is equal to the bandwidth of the first carrier frequency.

[0314] Some of the disclosed embodiments may be implemented as devices or modules using hardware circuits, software, or a combination thereof. For example, a hardware circuit implementation may include discrete analog and / or digital components integrated, for example, as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate array (FPGA) devices. Some implementations may additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor having an architecture optimized for the operational needs of digital signal processing associated with the disclosed functionality of the present application. Similarly, various components or subcomponents within each module may be implemented in software, hardware, or firmware. Connections between modules and / or components within a module may be provided using any one of the connection methods and mediums known in the art, including, but not limited to, communication via the Internet, wired, or wireless networks using appropriate protocols.

[0315] Some of the embodiments described herein are described in the general context of a method or process that may be implemented in one embodiment by a computer program product embodied in a computer-readable medium containing computer-executable instructions, such as program code, executed by computers in a network environment. Computer-readable media may include removable and non-removable storage devices, including, but not limited to, read-only memory (ROM), random access memory (RAM), compact discs (CDs), digital versatile discs (DVDs), and the like. Thus, computer-readable media may include non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer- or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.

[0316] While this document contains many details, these should not be construed as limitations on the scope of the claimed invention or the invention that may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, while features may be described above as acting in a particular combination and initially claimed as such, one or more features from a claimed combination may, in some cases, be excised from the combination, and the claimed combination may be directed to a subcombination or a variation of the subcombination. Similarly, while operations are shown in the figures in a particular order, this should not be understood as requiring such operations to be performed in the particular order shown, or in the sequential order, or that all of the operations shown be performed, to achieve desirable results.

[0317] Only some implementations and examples have been described, and other implementations, extensions and variations can be made based on what is described and illustrated in this disclosure.

Claims

1. 1. A method of wireless communication, comprising: receiving, by a wireless device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration, the radio configuration information including a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between a second carrier and one or more carrier frequencies; operating the wireless device in accordance with the radio configuration information; A method comprising:

2. 2. The method of claim 1, wherein a portion of a set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another one of the more than one second carriers.

3. The method of claim 2 , wherein the frequency resources of the first carrier include frequency resources of the more than one second carrier.

4. The method according to any of claims 1 to 3, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier.

5. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier configuration or the second carrier configuration.

6. The method according to any one of claims 1 to 4, wherein the first correspondence relationship or the second correspondence relationship is indicated in the carrier frequency configuration.

7. The method according to any one of claims 1 to 4, wherein the first correspondence relationship is indicated in a first configuration within the radio configuration information, and the second correspondence relationship is indicated in a second configuration within the radio configuration information, and the first configuration and the second configuration include different configurations selected from the first carrier configuration, the second carrier configuration, and the carrier frequency configuration.

8. 1. A method of wireless communication, comprising: the network device transmitting radio configuration information to the wireless device, the radio configuration information including the first carrier configuration, the second carrier configuration, and the carrier frequency configuration; Including, 12. The method of claim 11, wherein the radio configuration information includes a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between a second carrier and one or more carrier frequencies.

9. 9. The method of claim 8, wherein a portion of a set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another one of the more than one second carriers.

10. 10. The method of claim 9, wherein the frequency resources of the first carrier include frequency resources of the more than one second carrier.

11. The method according to any of claims 8 to 10, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier.

12. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in the first carrier configuration or the second carrier configuration.

13. The method according to any one of claims 8 to 11, wherein the first correspondence relationship or the second correspondence relationship is indicated in the carrier frequency configuration.

14. The method according to any one of claims 8 to 11, wherein the first correspondence relationship is indicated in a first configuration within the radio configuration information, and the second correspondence relationship is indicated in a second configuration within the radio configuration information, and the first configuration and the second configuration include different configurations selected from the first carrier configuration, the second carrier configuration, and the carrier frequency configuration.

15. 1. A wireless device for wireless communication, the wireless device comprising at least one processor configured to implement a method, the method comprising: receiving, by the wireless device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration, the radio configuration information including a first correspondence between a first carrier in the first carrier configuration and more than one second carrier in the second carrier configuration, and a second correspondence between a second carrier and one or more carrier frequencies; operating the wireless device in accordance with the radio configuration information; wireless devices, including

16. 16. The wireless device of claim 15, wherein a portion of a set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another one of the more than one second carriers.

17. 17. The wireless device of claim 16, wherein the frequency resources of the first carrier include frequency resources of the more than one second carrier.

18. The wireless device of any of claims 15 to 17, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier.

19. The wireless device of any of claims 15 to 18, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier configuration or the second carrier configuration.

20. The wireless device of any one of claims 15 to 18, wherein the first correspondence relationship or the second correspondence relationship is indicated in the carrier frequency configuration.

21. 19. The wireless device of claim 15, wherein the first correspondence relationship is indicated in a first configuration within the radio configuration information, and the second correspondence relationship is indicated in a second configuration within the radio configuration information, and the first configuration and the second configuration include different configurations selected from the first carrier configuration, the second carrier configuration, and the carrier frequency configuration.

22. 1. A wireless device for wireless communication, the wireless device comprising at least one processor configured to implement a method, the method comprising: transmitting, by the network device, radio configuration information including a first carrier configuration, a second carrier configuration, and a carrier frequency configuration to the wireless device; Including, a second carrier configuration information configured to receive a second carrier from the second carrier configuration and a second correspondence relationship between the second carrier and one or more carrier frequencies;

23. 23. The wireless device of claim 22, wherein a portion of a set of subcarriers of the first carrier is mapped to a set of subcarriers of one of the more than one second carriers, and another portion of the set of subcarriers of the first carrier is mapped to a set of subcarriers of another one of the more than one second carriers.

24. 24. The wireless device of claim 23, wherein the frequency resources of the first carrier include frequency resources of the more than one second carrier.

25. The wireless device of any of claims 22 to 24, wherein the bandwidth of the first carrier is equal to the sum of the bandwidths of the more than one second carrier.

26. The wireless device of any of claims 22 to 25, wherein the first correspondence relationship or the second correspondence relationship is indicated within the first carrier configuration or the second carrier configuration.

27. The wireless device of any of claims 22 to 25, wherein the first correspondence relationship or the second correspondence relationship is indicated in the carrier frequency configuration.

28. 26. The wireless device of claim 22, wherein the first correspondence relationship is indicated in a first configuration within the radio configuration information, and the second correspondence relationship is indicated in a second configuration within the radio configuration information, and the first configuration and the second configuration include different configurations selected from the first carrier configuration, the second carrier configuration, and the carrier frequency configuration.

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