A method and device for receiving public signaling

Abstract

The present application discloses a method for receiving common signaling, comprising: determining a receiving method of common signaling according to a maximum bandwidth supported by a UE; and the UE receiving the common signaling according to the determined receiving method. The present application also discloses a corresponding device. By applying the technical solution disclosed in the present application, common signaling can be correctly received even when the system bandwidths supported by each UE are different.

Description

[0001] This application is a divisional application of the invention patent application with the application date of July 25, 2016, application number 201610590991.2, and invention name “A method and device for receiving public signaling”. Technical Field

[0002] The present application relates to the field of wireless communication technology, and more specifically, to a method and device for receiving public signaling. Background Art

[0003] In the Long Term Evolution Advanced (LTE-A) system, each radio frame is 10ms long and is divided into 10 subframes. A downlink transmission time interval (TTI) is defined on a subframe. Figure 1 The figure shows a frame structure diagram of a frequency division duplex (FDD) system. Each downlink subframe includes two time slots. For a general cyclic prefix (CP) length, each time slot contains 7 orthogonal frequency division multiplexing (OFDM) symbols; for an extended CP length, each time slot contains 6 OFDM symbols.

[0004] like Figure 2The figure shows a schematic diagram of the subframe structure in the LTE system. The first n OFDM symbols, where n is 1, 2 or 3, are used to transmit downlink control information, including the Physical Downlink Control Channel (PDCCH) and other control information; the remaining OFDM symbols are used to transmit the Physical Downlink Shared Channel (PDSCH). The basic granularity of resource allocation is the Physical Resource Block (PRB) pair. A PRB contains 12 consecutive subcarriers in frequency and corresponds to a time slot in time. Two PRBs in two time slots on the same subcarrier in a subframe are called a PRB pair. In each PRB pair, each Resource Element (RE) is the smallest unit of time-frequency resources, that is, a subcarrier in frequency and an OFDM symbol in time. REs can be used for different functions respectively. For example, some REs can be used to transmit cell-specific reference signals (CRS), user-specific demodulation reference signals (DMRS), channel state information reference signals (Channel State Information-Reference Signal, CSI-RS), physical downlink control channels (PDCCH) and physical downlink shared channels (PDSCH), etc.

[0005] In the LTE system, the transmission of PDSCH and PUSCH is scheduled by PDCCH or Enhanced Physical Downlink Control Channel (EPDCCH), wherein the resources for transmitting PDSCH and PUSCH are also allocated by resource allocation signaling in PDCCH / EPDCCH, the maximum resources allocated for transmitting PDSCH and PUSCH are all PRB pairs within the entire system bandwidth, the minimum resources allocated for transmitting PDSCH and PUSCH are one PRB pair within the entire system bandwidth, and the granularity of resource allocation is one PRB pair. The number of bits of resource allocation signaling in PDCCH / EPDCCH is calculated based on the number of all PRB pairs within the entire system bandwidth. For example, when the system bandwidth is 10MHz, the number of PRB pairs is 50, and the number of bits used for resource allocation signaling in PDCCH / EPDCCH is calculated based on the number of PRB pairs being 50, using different resource allocation methods.

[0006] In the LTE system, a common search space and a UE-specific search space are defined for PDCCH transmission. In the common search space, all UEs can demodulate and decode, while in the UE-specific search space, only specific UEs can demodulate and decode. Tracking of PDCCH includes: performing trial demodulation and decoding on the common search space and UE-specific search space set of all configured candidate PDCCHs, and then using the corresponding Radio Network Temporary Indicator (RNTI) (for example, C-RNTI) to check the scrambled cyclic redundancy check (CRC), and finally finding the PDCCH scheduled by the base station.

[0007] At present, the system information transmitted by the LTE system includes: the Master Information Block (MIB) transmitted by the Physical Broadcasting Channel (PBCH), which is transmitted in the middle 6 PRB pairs of the serving cell; and the System Information Block (SIB) transmitted by the PDSCH, which is scheduled by the PDCCH and can be transmitted within the entire system bandwidth. In addition, paging information and random access (RACH) are also scheduled by the common search space.

[0008] In the LTE system, the UE is capable of supporting all system bandwidths. In the new radio access technology (NR), the system bandwidth is also greatly increased due to the greatly increased frequency band width, and some UEs may not be able to support such a large system bandwidth, and the maximum system bandwidth supported by different UEs is also different. For example, Figure 3 As shown, the system bandwidth is 100 MHz, while the maximum bandwidth supported by the UE is 40 MHz. This application mainly studies a method for receiving system information and information scheduled by a common search space when the system bandwidths supported by the UE are different. Summary of the invention

[0009] The present application provides a method and device for receiving common signaling to solve the problem of how each UE in the system correctly receives common signaling when the UEs in the system support different system bandwidths.

[0010] The present application discloses a method for receiving public signaling, comprising:

[0011] Determine a receiving mode of common signaling according to the maximum bandwidth supported by the UE;

[0012] The UE receives the common signaling according to the determined receiving manner.

[0013] Preferably, for a case where only one set of common signaling is sent within the system bandwidth, and the set of common signaling is sent only within a frequency band within the system bandwidth, the method of determining the reception mode of the common signaling according to the maximum bandwidth supported by the UE includes:

[0014] Determine in accordance with at least one of the following methods A to E:

[0015] Mode A: When the maximum bandwidth supported by the UE is greater than or equal to the system bandwidth, the UE receives data, UE-specific signaling and common signaling on all or part of the frequency resources of the system bandwidth;

[0016] Mode B: When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE receives data, UE-specific signaling and common signaling on frequency resources that include a frequency band in which common signaling may be transmitted and is less than or equal to the maximum bandwidth supported by the UE;

[0017] Mode C: When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE receives data and UE-specific signaling on frequency resources that do not completely contain the frequency band that may transmit common signaling and are less than or equal to the maximum bandwidth supported by the UE, and the reception of data and UE-specific signaling and the reception of common signaling are performed in a time division multiplexing manner;

[0018] Mode D: When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE receives data and UE-specific signaling on frequency resources that do not include a frequency band that may transmit common signaling and are less than or equal to the maximum bandwidth supported by the UE, and the reception of data and UE-specific signaling and the reception of common signaling are performed in a time division multiplexing manner;

[0019] Method E: When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE receives data and UE-specific signaling on frequency resources that include a frequency band in which common signaling may be transmitted and that is less than or equal to the maximum bandwidth supported by the UE; if common signaling is transmitted in the overlapping part of the frequency band in which the UE receives data and the frequency band in which common signaling is received, data, UE-specific signaling and common signaling are received simultaneously in the overlapping part; otherwise, the reception of data and UE-specific signaling is performed with the reception of common signaling in a time division multiplexing manner.

[0020] Preferably, the receiving of data and UE-specific signaling and receiving of common signaling are performed in a time division multiplexing manner, including:

[0021] The UE receives common signaling on a frequency band for transmitting common signaling on a first type of subframe according to the configuration of the high-layer signaling, and receives data and UE-specific signaling on a frequency band for transmitting data on a second type of subframe other than the first type of subframe according to the configuration of the high-layer signaling.

[0022] Preferably, the receiving of data and UE-specific signaling and receiving of common signaling are performed in a time division multiplexing manner, including:

[0023] The UE receives common signaling on a frequency band for transmitting common signaling on a candidate subframe for receiving common signaling, and receives data and UE-specific signaling on a frequency band for transmitting data on a subframe other than the candidate subframe for receiving common signaling.

[0024] Preferably, the receiving of data and UE-specific signaling and receiving of common signaling are performed in a time division multiplexing manner, including:

[0025] The UE receives a common signaling reception indication on a frequency band for transmitting data, and decides whether to receive common signaling on a corresponding candidate subframe for receiving common signaling on a frequency band for transmitting common signaling based on the common signaling reception indication, and the UE receives data and UE-specific signaling on a frequency band for transmitting data on a subframe other than receiving common signaling.

[0026] Preferably, the UE receives a common signaling reception indication on a frequency band for transmitting data, and determines whether to receive the common signaling on a frequency band for transmitting the common signaling on a corresponding candidate subframe for receiving the common signaling according to the common signaling reception indication, including at least one of the following methods:

[0027] The UE determines a candidate subframe for receiving common signaling according to the configuration of the high-layer signaling or according to a preset provision, receives a common signaling reception indication in the candidate subframe for receiving common signaling, and decides whether to receive common signaling on a frequency band for transmitting common signaling in a current subframe according to the common signaling reception indication;

[0028] The UE determines a candidate subframe for receiving common signaling according to the configuration of the high-layer signaling or according to a preset provision, receives a common signaling reception indication in a downlink subframe closest to the candidate subframe for receiving common signaling, and decides whether to receive common signaling on a frequency band for transmitting common signaling in a first candidate subframe for receiving common signaling after the downlink subframe according to the common signaling reception indication;

[0029] The UE determines a subframe for receiving a common signaling reception indication according to the configuration of high-layer signaling, receives the common signaling reception indication in the determined subframe, and decides, based on the common signaling reception indication, whether to receive the common signaling in a candidate subframe for receiving the common signaling on a frequency band for transmitting the common signaling within a set time after the subframe.

[0030] Preferably, the method further comprises:

[0031] If the UE does not receive the common signaling reception indication in the subframe in which the common signaling reception indication is received, the UE performs at least one of the following processing:

[0032] The UE not receiving the common signaling reception indication indicates that the UE does not need to receive the common signaling;

[0033] The UE not receiving the common signaling reception indication indicates that the UE needs to receive the common signaling.

[0034] Preferably, the public signaling reception indication is an indication applicable to all categories of public signaling, or the public signaling reception indication is divided into categories, and different categories of public signaling reception indications are respectively applicable to corresponding categories of public signaling.

[0035] Preferably, the candidate subframes for receiving public signaling include at least one of the following: subframes for transmitting MIB by the base station, subframes for transmitting SIB1 by the base station, subframes for transmitting other SIBs indicated by SIB1, subframes configured by the base station to the UE for transmitting paging information, and subframes configured by the base station to the UE for transmitting random access response information.

[0036] Preferably, for a situation where at least two sets of common signaling are sent within the system bandwidth, and each set of common signaling is sent within a different frequency band within the system bandwidth, and the information sent by each set of common signaling is the same, the method of determining the reception mode of the common signaling according to the maximum bandwidth supported by the UE includes at least one of the following:

[0037] When the maximum bandwidth supported by the UE is greater than or equal to the system bandwidth, the UE receives data and UE-specific signaling on all or part of the frequency resources of the system bandwidth, and the UE receives any set of common signaling;

[0038] When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE receives data, UE-specific signaling, and common signaling on frequency resources less than or equal to the maximum bandwidth supported by the UE; when there is more than one set of common signaling sent within the frequency band in which the UE receives data, the UE receives any one set of common signaling.

[0039] The present application also provides a device, comprising:

[0040] A mode determination module, used to determine a receiving mode of public signaling according to a maximum bandwidth supported by the device;

[0041] The receiving module is used to receive the public signaling according to the determined receiving mode.

[0042] It can be seen from the above technical solution that the method for receiving common signaling provided in the present application first determines the receiving method of the common signaling according to the maximum bandwidth supported by the UE, and then the UE receives the common signaling according to the determined receiving method, so that UEs supporting various bandwidths can have corresponding methods to receive common signaling, which solves the problem of how each UE can correctly receive common signaling when the system bandwidths supported by the UEs in the system are different. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the frame structure of an existing frequency division duplex system;

[0044] Figure 2 It is a schematic diagram of a subframe structure in an existing LTE system;

[0045] Figure 3 This is an example diagram showing that the maximum bandwidth supported by the UE is less than the system bandwidth;

[0046] Figure 4 A flowchart of a method for receiving public signaling for this application;

[0047] Figure 5 This is a schematic diagram of the first case of public signaling for this application;

[0048] Figure 6 This is a schematic diagram of the second case of public signaling in this application;

[0049] Figure 7 This is a schematic diagram of a UE receiving data or signaling on a frequency resource including a frequency band in which public signaling may be transmitted and which is less than or equal to the maximum bandwidth supported by the UE in Embodiment 1 of the present application;

[0050] Figure 8 This is a schematic diagram of a UE receiving data on a frequency resource that does not completely include a frequency band that may transmit public signaling and is less than or equal to a maximum bandwidth supported by the UE in Embodiment 2 of the present application;

[0051] Fig. 9 This is a schematic diagram of a method 1 for receiving data and public signaling by time division multiplexing in Embodiment 2 of the present application;

[0052] Fig.10 A schematic diagram of a second method for receiving data and public signaling by time division multiplexing in the second embodiment of the present application;

[0053] Fig.11 This is a schematic diagram of the first method for obtaining a public signaling reception indication in Embodiment 2 of the present application;

[0054] Fig.12 This is a schematic diagram of a second method for obtaining a public signaling reception indication in Embodiment 2 of the present application;

[0055] Fig.13 This is a schematic diagram of a third method for obtaining a public signaling reception indication in Embodiment 2 of the present application;

[0056] Fig.14 This is a schematic diagram of a UE receiving data on a frequency resource that does not contain a frequency band that may transmit public signaling and is less than or equal to the maximum bandwidth supported by the UE in Embodiment 3 of the present application;

[0057] Fig.15 It is a schematic diagram of a UE receiving data on a frequency resource that partially includes a frequency band that may transmit public signaling and is less than or equal to the maximum bandwidth supported by the UE in Embodiment 3 of the present application;

[0058] Fig.16 This is a schematic diagram of the structure of a preferred device of the present application. DETAILED DESCRIPTION

[0059] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and examples.

[0060] In order to achieve the purpose of this application, this application proposes a method for receiving public signaling, such as Figure 4 As shown, the method comprises the following steps:

[0061] Step 401: Determine a method for receiving common signaling according to the capability of the UE.

[0062] The UE capability mentioned here refers to the UE's capability to process frequency domain bandwidth, that is, the maximum frequency domain bandwidth that the UE can process simultaneously, that is, the maximum bandwidth supported by the UE.

[0063] The common signaling mentioned here is signaling information that can be shared by multiple UEs, including at least one of the following: MIB, SIB, paging information, and random access information.

[0064] Step 402: The UE receives the common signaling according to the determined receiving mode.

[0065] The sending of public signaling can be divided into the following two situations:

[0066] The first case is that only one set of common signaling is sent within the system bandwidth, and this set of common signaling is sent only within a frequency band within the system bandwidth, such as Figure 5 As shown;

[0067] The second situation is that at least two sets of public signaling are sent within the system bandwidth, and each set of public signaling is sent within a different frequency band within the system bandwidth, and the information sent by each set of public signaling is the same. Figure 6 shown.

[0068] The technical solution of the present application is further described in detail below through several preferred embodiments. Among them, embodiments 1 to 3 mainly relate to the above-mentioned method of UE receiving common signaling in the first case, and embodiment 4 is used to illustrate the above-mentioned method of UE receiving common signaling in the second case.

[0069] Embodiment 1:

[0070] When the maximum bandwidth supported by the UE is greater than or equal to the system bandwidth (i.e., for UEs that can support receiving information over the entire system bandwidth), the UE can receive data, UE-specific signaling, and common signaling on frequency resources over the entire system bandwidth or on frequency resources within a portion of the system bandwidth. The UE-specific signaling is signaling that can be received by a specific UE, while the common signaling is signaling that can be received by all UEs, such as MIB, SIB, etc. In some cases, the UE-specific signaling of some UEs may be the same. In this case, the UE-specific signaling of these UEs can be sent as UE-shared signaling, and UE-shared signaling refers to signaling that can be received by some UEs.

[0071] When the maximum bandwidth supported by the UE is less than the system bandwidth (i.e., for UEs that can support receiving information within a portion of the system bandwidth), the UE can only receive data, UE-specific signaling, and public signaling on frequency resources that include the frequency band that may transmit public signaling and are less than or equal to the maximum bandwidth supported by the UE. In other words, the frequency band that may transmit public signaling must be fully included in the frequency band that the UE receives data, so that the UE can receive public signaling while receiving data. For example, Figure 7 In the case shown, the UE can simultaneously receive public signaling, data transmitted to the UE by the base station, and UE-specific signaling. However, when the majority of UEs support partial bandwidth, the data transmission of these UEs can only be carried out on frequency bands near the frequency bands that may transmit public signaling. There may be no data transmission on other frequency bands, which may cause a waste of frequency resources outside the partial bandwidth supported by the UE.

[0072] Embodiment 2:

[0073] When the maximum bandwidth supported by the UE is greater than or equal to the system bandwidth, the UE can receive data, UE-specific signaling and common signaling on frequency resources of the entire system bandwidth or on frequency resources within a portion of the system bandwidth.

[0074] When the maximum bandwidth supported by the UE is smaller than the system bandwidth, the UE may receive data, UE-specific signaling and common signaling on frequency resources that include a frequency band that may transmit common signaling and that is smaller than or equal to the maximum bandwidth supported by the UE. At this time, the frequency band that may transmit common signaling must all be included in the frequency band in which the UE receives data. In this way, the UE may receive common signaling at the same time as receiving data and UE-specific signaling. The bandwidth and position of the frequency band in which the UE receives data and UE-specific signaling may be determined according to the protocol or by receiving high-level signaling.

[0075] When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE may also receive data and UE-specific signaling on frequency resources that do not completely contain the frequency band that may transmit common signaling and are less than or equal to the maximum bandwidth supported by the UE, such as Figure 8 As shown, the bandwidth and position of the frequency band for UE to receive data can be determined according to the protocol, or determined by receiving high-level signaling. In this case, since the UE cannot work simultaneously on the frequency band for receiving data and on the frequency band for receiving common signaling, the reception of data and UE-specific signaling and the reception of common signaling should be performed separately in a time division multiplexing manner.

[0076] The following describes several preferred methods provided by the present application for receiving data and UE-specific signaling and receiving common signaling in a time division multiplexing manner.

[0077] Method 1 for receiving data and public signaling using time division multiplexing:

[0078] The UE is configured to receive common signaling on a frequency band for transmitting common signaling on some subframes (corresponding to the first type of subframes in the claims) through high-layer signaling. Since the UE cannot receive UE-specific signaling and data on a frequency band for transmitting UE-specific signaling and data (hereinafter referred to as the frequency band for transmitting data) on these subframes, the base station does not transmit UE-specific signaling and data to the UE on these subframes; and the UE is configured to receive UE-specific signaling and data on a frequency band for transmitting data on other subframes (corresponding to the second type of subframes in the claims) through high-layer signaling, such as Fig. 9 shown.

[0079] This method allows the UE to receive public signaling and UE-specific signaling and data in a time-sharing manner. The UE will not miss receiving public signaling sent by the base station, nor will it miss receiving UE-specific signaling and data. However, since a semi-static high-level signaling configuration is used, it is possible that there is no public signaling transmission or the transmitted public signaling is not updated on the subframes in which the UE is configured to receive public signaling. In this way, on these subframes, even if there is no public signaling transmission or the transmitted public signaling is not updated, the UE cannot receive UE-specific signaling and data, which may affect the rate at which the UE receives data.

[0080] Method 2 for receiving data and public signaling using time division multiplexing:

[0081] In certain subframes, the base station will transmit MIB and / or SIB, or the base station may send paging information (Paging) or random access response information in certain subframes. These subframes are subframes that may transmit public signaling. This application refers to these subframes as candidate subframes for receiving public signaling. The candidate subframes for receiving public signaling include at least one of the following: subframes in which the base station transmits MIB, subframes in which the base station transmits SIB1, subframes indicated by SIB1 for transmitting other SIBs, subframes configured by the base station to the UE for transmitting paging information, and subframes configured by the base station to the UE for transmitting random access response information.

[0082] The UE receives public signaling on the frequency band for transmitting public signaling in the candidate subframes for receiving public signaling. Since the UE cannot receive UE-specific signaling and data on the frequency band for transmitting data in these subframes, the base station does not transmit UE-specific signaling and data to the UE in these subframes. For example, the subframes in which the base station transmits MIB and SIB1, the subframes indicated by SIB1 for transmitting other SIBs, and the subframes configured by the base station to the UE for possible transmission of paging information, etc. In these subframes, regardless of whether the base station has updated the MIB and SIB, and whether the paging information has been transmitted, the UE must go to the corresponding subframes to receive the MIB, SIB, and blind detection paging information. The UE receives UE-specific signaling and data on the frequency band for transmitting data in subframes other than the candidate subframes for receiving public signaling, such as Fig.10 shown.

[0083] This method allows the UE to receive public signaling and UE-specific signaling and data in a time-sharing manner. The UE will not miss receiving the public signaling sent by the base station, nor will it miss receiving the UE-specific signaling and data. However, if there is no public signaling transmission or the transmitted public signaling is not updated on the subframes configured for the UE to receive public signaling, and the UE cannot receive UE-specific signaling and data on these subframes, the rate at which the UE receives data may be affected.

[0084] Method 3 of receiving data and public signaling by time division multiplexing:

[0085] The UE receives public signaling on the frequency band for transmitting public signaling in the candidate subframes for receiving public signaling. In this way, the UE cannot receive UE-specific signaling and data on the frequency band for transmitting data on these subframes, so the base station does not transmit UE-specific signaling and data to the UE on these subframes. For example, the candidate subframes for receiving public signaling include at least one of the following: subframes in which the base station transmits MIB and SIB1, subframes for transmitting other SIBs indicated by SIB1, and subframes configured by the base station to the UE for possible transmission of paging information. The UE receives UE-specific signaling and data on the frequency band for transmitting data on subframes other than the candidate subframes for receiving public signaling. However, it is possible that the information values ​​on the subframes for transmitting MIB and SIB have not been updated. In fact, the UE does not need to receive the MIB and SIB information on these subframes. In addition, the subframes configured to transmit paging information may not have the transmission of paging information. At this time, the UE does not need to blindly detect the paging information. However, there is no information to notify the UE whether the information value on the subframe that transmits the MIB and SIB has been updated, and there is no information to notify the UE whether there is paging information transmission on the subframe that may transmit the paging information. Therefore, the UE can only receive the public signaling on all candidate subframes for receiving public signaling, regardless of whether the base station has updated the MIB and SIB, and whether the paging information has been transmitted. In order to solve this technical problem, the present application proposes that the base station can indicate to the UE whether the information value on the subframe that may transmit the MIB and SIB has been updated, and whether there is paging information transmission on the subframe that may transmit the paging information, by transmitting some information. Several preferred indication methods are described below.

[0086] The UE receives an information indication (e.g., physical layer signaling) on ​​the frequency band for receiving data, and then decides whether to receive common signaling on the frequency band for transmitting common signaling on the corresponding subframe based on the received information indication. This information indication may also be referred to as a common signaling reception indication. If the UE receives common signaling on the frequency band for transmitting common signaling, it cannot receive UE-specific signaling and data at the same time.

[0087] Notification method 1:

[0088] The UE determines the candidate subframes for receiving common signaling by receiving high-level signaling configuration or through some provisions of the protocol. Then, the UE receives the common signaling reception indication in these candidate subframes or in the downlink subframes before the candidate subframes, and decides whether the UE receives the common signaling based on the received common signaling reception indication.

[0089] The first method for obtaining the common signaling reception indication is: the UE receives the common signaling reception indication in a candidate subframe for receiving the common signaling, and then determines whether to receive the common signaling in the current subframe on the frequency band for transmitting the common signaling according to the common signaling reception indication, such as Fig.11 shown.

[0090] The second method for obtaining the public signaling reception indication is: the UE receives the public signaling reception indication in the downlink subframe closest to the candidate subframe for receiving the public signaling, and then decides whether to receive the public signaling in the frequency band for transmitting the public signaling in the first candidate subframe for the public signaling after receiving the public signaling reception indication subframe according to the public signaling reception indication. Fig.12 As shown, D in the figure represents a downlink subframe, and U represents an uplink subframe.

[0091] The third method for obtaining the public signaling reception indication is: configuring the UE in which subframes to receive the public signaling reception indication by high-level signaling, and then determining whether to receive the public signaling on the frequency band transmitting the public signaling on the candidate subframes for receiving the public signaling within a period of time after receiving the subframe of the public signaling reception indication according to the public signaling reception indication. Fig.13 As shown, high-level signaling configures the UE to receive a public signaling reception indication in subframe 0 of each radio frame, and accordingly determines whether the UE receives public signaling on candidate subframes (subframe 6 and subframe 9) for receiving public signaling between subframe 1 of the current radio frame and subframe 0 of the next radio frame.

[0092] The above common signaling reception indication may be indicated by a UE-specific control signaling, for example, by a one-bit information in a control signaling for scheduling uplink data or a control signaling for scheduling downlink data (for example, PDCCH / EPDCCH). Alternatively, the common signaling reception indication may be indicated by a control signaling shared by multiple UEs, and multiple shared UEs may receive this common signaling reception indication. For example, the common signaling reception indication occupies one bit of information, and a common signaling reception indication value of "0" indicates that the UE does not need to receive common signaling, and a common signaling reception indication value of "1" indicates that the UE needs to receive common signaling.

[0093] In addition, if the UE does not receive a public signaling reception indication in a candidate subframe for receiving public signaling or in the downlink subframe closest to the candidate subframe for receiving public signaling, that is, if the UE does not receive a public signaling reception indication in a subframe that may transmit a public signaling reception indication, then the following methods provided in this application are used for processing.

[0094] One processing method is: if the UE does not receive the public signaling reception indication, it means that the UE does not need to receive the public signaling. That is to say, if the base station wants the UE to receive the public signaling, the base station can send a public signaling reception indication to command the UE to receive the public signaling; if the base station does not want the UE to receive the public signaling, the base station can send a public signaling reception indication to command the UE not to receive the public signaling, and the base station may not send a public signaling reception indication to indicate that the UE does not need to receive the public signaling, then the UE does not receive the public signaling reception indication, and the UE does not receive the public signaling. In this way, the public signaling reception indication can be saved, but if the base station sends a public signaling reception indication and the UE does not receive the public signaling reception indication, then the UE will miss the reception of the public signaling.

[0095] Another processing method is: if the UE does not receive the public signaling reception indication, it means that the UE needs to receive the public signaling. That is to say, if the base station wants the UE to receive public signaling, the base station can send a public signaling reception indication commanding the UE to receive public signaling; if the base station does not want the UE to receive public signaling, the base station must send a public signaling reception indication commanding the UE not to receive public signaling. If the base station does not send a public signaling reception indication, the UE will not receive the public signaling reception indication, and the UE will receive the public signaling. In this way, the UE will not miss the reception of public signaling. However, this may require more public signaling reception indications, because the system information is not updated in most cases, and no paging information will be sent at most paging times.

[0096] Notification method 2:

[0097] The UE determines the candidate subframes for receiving common signaling by receiving high-level signaling configuration or through some provisions of the protocol. Then, the UE receives the common signaling reception indication in these candidate subframes or in the downlink subframes before the candidate subframes, and decides whether the UE receives the common signaling based on the received common signaling reception indication.

[0098] In this method, the public signaling reception indication is divided into categories, and different categories of public signaling reception indications are respectively applicable to corresponding categories of public signaling, that is to say: the public signaling reception indication is indicated according to different categories of public signaling, so there will be MIB public signaling reception indication, SIB public signaling reception indication, paging public signaling reception indication, etc. Different categories of public signaling reception indications are only used to determine whether the UE receives the corresponding public signaling. For example, the MIB public signaling reception indication only determines whether the UE receives the MIB in the candidate subframe of the MIB public signaling. The specific notification method is the same as the aforementioned notification method 1, except that the notification method here is only for one public signaling, while the notification method 1 is for all public signaling.

[0099] Embodiment three:

[0100] When the maximum bandwidth supported by the UE is greater than or equal to the system bandwidth, the UE can receive data, UE-specific signaling and common signaling on frequency resources of the entire system bandwidth or on frequency resources within a portion of the system bandwidth.

[0101] When the maximum bandwidth supported by the UE is smaller than the system bandwidth, the UE may receive data, UE-specific signaling and common signaling on frequency resources that include a frequency band that may transmit common signaling and that is smaller than or equal to the maximum bandwidth supported by the UE. At this time, the frequency band that may transmit common signaling must all be included in the frequency band in which the UE receives data. In this way, the UE may receive common signaling at the same time as receiving data and UE-specific signaling. The bandwidth and position of the frequency band in which the UE receives data and UE-specific signaling may be determined according to the protocol or by receiving high-level signaling.

[0102] When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE may also receive data and UE-specific signaling on frequency resources that do not contain any frequency band that may transmit common signaling and are less than or equal to the maximum bandwidth supported by the UE. The bandwidth and position of the frequency band for the UE to receive data and UE-specific signaling may be determined according to a protocol or by receiving high-layer signaling, such as Fig.14 In this case, since the UE cannot work simultaneously on the frequency band for receiving data and on the frequency band for receiving common signaling, the reception of data and UE-specific signaling and the reception of common signaling shall be performed separately in a time division multiplexing manner, and the specific receiving method is the same as the method in Embodiment 2 when the UE receives data on a frequency resource that does not completely include a frequency band that may transmit common signaling and is less than or equal to the maximum bandwidth supported by the UE.

[0103] When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE may also receive data and UE-specific signaling on a frequency resource that partially includes a frequency band that may transmit common signaling and is less than or equal to the maximum bandwidth supported by the UE. That is, the frequency band in which the UE receives data and the frequency band in which the UE receives common signaling partially overlap. The bandwidth and position of the frequency band in which the UE receives data may be determined according to a protocol or by receiving high-level signaling, such as Fig.15As shown. In this case, if the common signaling is transmitted in the part where the frequency band for receiving data by the UE overlaps with the frequency band for receiving common signaling, the UE can simultaneously receive data and UE-specific signaling, and the specific receiving method is the same as the method in Example 2 when the UE receives data on a frequency resource that completely contains the frequency band that may transmit common signaling and is less than or equal to the maximum bandwidth supported by the UE; if the common signaling is transmitted in the part where the frequency band for receiving data by the UE and the frequency band for receiving common signaling do not overlap, the UE cannot simultaneously receive data and UE-specific signaling and receive common signaling, therefore, receiving data and UE-specific signaling and receiving common signaling need to be performed separately in a time division multiplexing manner, and the specific receiving method is the same as the method in Example 2 when the UE receives data on a frequency resource that does not completely contain the frequency band that may transmit common signaling and is less than or equal to the maximum bandwidth supported by the UE.

[0104] Embodiment 4:

[0105] This embodiment describes a method for receiving common signaling in a second situation, where at least two sets of common signaling are sent within the system bandwidth, and each set of common signaling is sent within a different frequency band within the system bandwidth, and each set of common signaling sends the same information.

[0106] When the maximum bandwidth supported by the UE is greater than or equal to the system bandwidth (i.e., for the UE that can support receiving information over the entire system bandwidth), the UE can receive data and UE-specific signaling on frequency resources of the entire system bandwidth or on frequency resources within a portion of the system bandwidth, and the UE can receive any set of common signaling.

[0107] When the maximum bandwidth supported by the UE is less than the system bandwidth, the UE can receive data and UE-specific signaling on frequency resources less than or equal to the maximum bandwidth supported by the UE. The bandwidth and position of the frequency band in which the UE receives data can be determined according to the protocol or by receiving high-level signaling. At this time, there is at least one set of frequency bands for transmitting common signaling within the frequency band in which the UE receives data, so that the UE can receive common signaling while receiving data. When there is more than one set of common signaling sent within the frequency band in which the UE receives data, the UE can receive any set of common signaling.

[0108] Corresponding to the above method, the present application also provides a device, whose composition structure is as follows Fig.16 As shown, the device includes:

[0109] A mode determination module, used to determine a receiving mode of public signaling according to a maximum bandwidth supported by the device;

[0110] The receiving module is used to receive the public signaling according to the determined receiving mode.

[0111] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising: determining a first frequency band of a plurality of frequency bands within a bandwidth; as well as receiving first common signaling from a base station (BS) in the first frequency band, The second common signaling is received in a second frequency band among the multiple frequency bands, The method further comprises: In case the frequency band used for data and UE-specific signaling includes a frequency band available for common signaling, receiving the common signaling, the data, and the UE-specific signaling, and The bandwidth of the first frequency band and the bandwidth of the second frequency band are smaller than the bandwidth.

2. The method according to claim 1, wherein: The first common signaling includes at least one of a system information block, paging information or random access information; and / or The second common signaling includes at least one of a system information block, paging information or random access information.

3. The method according to claim 1, further comprising: receiving first UE-specific signaling from the BS in the first frequency band, The second UE-specific signaling is received in the second frequency band.

4. The method according to claim 1, further comprising: receiving data and UE-specific signaling on frequency resources excluding the entire frequency band available for common signaling transmission and within a bandwidth less than or equal to a maximum bandwidth supported by the UE, wherein the maximum bandwidth supported by the UE is less than a system bandwidth; and The second common signaling, the data and the UE-specific signaling are received through time division multiplexing.

5. The method according to claim 1, further comprising: receiving data and UE-specific signaling on frequency resources excluding a frequency band that can be used for common signaling transmission and within a bandwidth that is less than or equal to a maximum bandwidth supported by the UE, wherein the maximum bandwidth supported by the UE is less than a system bandwidth and the maximum bandwidth supported by the UE is determined according to a capability of the UE; and The second common signaling, the data and the UE-specific signaling are received through time division multiplexing.

6. The method according to any one of claims 1 to 5, wherein: Receiving the first common signaling includes: receiving data, UE-specific signaling, and the first common signaling in frequency resources within a bandwidth less than or equal to a maximum bandwidth supported by the UE, wherein the maximum bandwidth supported by the UE is less than a system bandwidth; and The second common signaling is received in a frequency band used for UE data reception.

7. A method performed by a base station in a wireless communication system, the method comprising: Sending first common signaling to a user equipment (UE) in a first frequency band among a plurality of frequency bands within a bandwidth; as well as sending second common signaling to the UE in a second frequency band among the multiple frequency bands within the bandwidth, The method further comprises: In case the frequency band used for data and UE-specific signaling includes a frequency band available for common signaling, transmitting the common signaling, the data, and the UE-specific signaling, and The bandwidth of the first frequency band and the bandwidth of the second frequency band are smaller than the bandwidth.

8. The method according to claim 7, wherein: The first common signaling includes at least one of a system information block, paging information or random access information; and / or The second common signaling includes at least one of a system information block, paging information or random access information.

9. The method according to claim 7, further comprising: sending first UE-specific signaling to the UE in the first frequency band, The second UE-specific signaling is transmitted in the second frequency band.

10. A user equipment (UE) in a wireless communication system, the UE comprising: Transceiver; as well as at least one processor coupled to the transceiver, and the at least one processor is configured to: determining a first frequency band of a plurality of frequency bands within a bandwidth; and receiving first common signaling from a base station (BS) in the first frequency band, The second common signaling is received in a second frequency band among the multiple frequency bands, Wherein, the at least one processor is further configured to: In case the frequency band used for data and UE-specific signaling includes a frequency band available for common signaling, receiving the common signaling, the data, and the UE-specific signaling, and The bandwidth of the first frequency band and the bandwidth of the second frequency band are smaller than the bandwidth.

11. The UE according to claim 10, wherein: The first common signaling includes at least one of a system information block, paging information or random access information; and / or The second common signaling includes at least one of a system information block, paging information or random access information.

12. The UE according to claim 10, wherein: The at least one processor is further configured to: receiving first UE-specific signaling from the BS in the first frequency band, The second UE-specific signaling is received in the second frequency band.

13. The UE according to claim 10, wherein: The at least one processor is further configured to: receiving data and UE-specific signaling on frequency resources excluding the entire frequency band available for common signaling transmission and within a bandwidth less than or equal to a maximum bandwidth supported by the UE, wherein the maximum bandwidth supported by the UE is less than a system bandwidth; and The second common signaling, the data and the UE-specific signaling are received through time division multiplexing.

14. The UE according to claim 10, wherein: The at least one processor is further configured to: receiving data and UE-specific signaling on frequency resources excluding a frequency band that can be used for common signaling transmission and within a bandwidth that is less than or equal to a maximum bandwidth supported by the UE, wherein the maximum bandwidth supported by the UE is less than a system bandwidth and the maximum bandwidth supported by the UE is determined according to a capability of the UE; and The second common signaling, the data and the UE-specific signaling are received through time division multiplexing.

15. The UE according to any one of claims 10 to 14, wherein: The at least one processor is further configured to: receiving data, UE-specific signaling, and the first common signaling in frequency resources within a bandwidth less than or equal to a maximum bandwidth supported by the UE, wherein the maximum bandwidth supported by the UE is less than a system bandwidth; and The second common signaling is received in a frequency band used for UE data reception.

16. A base station in a wireless communication system, the base station comprising: Transceiver; as well as at least one processor coupled to the transceiver, and the at least one processor is configured to: Sending first common signaling to a user equipment (UE) in a first frequency band among a plurality of frequency bands within a bandwidth; as well as sending second common signaling to the UE in a second frequency band among the multiple frequency bands within the bandwidth, Wherein, the at least one processor is further configured to: In case the frequency band used for data and UE-specific signaling includes a frequency band available for common signaling, transmitting the common signaling, the data, and the UE-specific signaling, and The bandwidth of the first frequency band and the bandwidth of the second frequency band are smaller than the bandwidth.

17. The base station according to claim 16, wherein: The first common signaling includes at least one of a system information block, paging information or random access information; and / or The second common signaling includes at least one of a system information block, paging information or random access information.

18. The base station according to claim 16, wherein: The at least one processor is further configured to: sending first UE-specific signaling to the UE in the first frequency band, The second UE-specific signaling is transmitted in the second frequency band.

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