CN102300314A - Mobile communication system and method for configuring uplink and downlink frequency bands - Google Patents
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Abstract
本发明提供了一种配置上下行频段的方法，该方法应用于基于时分双工模式的移动通信系统中，所述移动通信系统的时隙配置方式同现有时分双工移动通信系统，所述移动通信系统的时间同步需求同现有时分双工移动通信系统，配置所述基于时分双工模式的移动通信系统的上行频段和下行频段，所述上行频段与下行频段不对称。本发明还提供了一种基于时分双工模式的移动通信系统。本发明方案可以使采用时分双工模式的移动通信系统在不预留保护带的情况下避免与其他移动通信系统混合部署时的上下行干扰。
The present invention provides a method for configuring uplink and downlink frequency bands. The method is applied in a mobile communication system based on time division duplex mode. The time slot configuration mode of the mobile communication system is the same as that of the existing time division duplex mobile communication system. The time synchronization requirement of the mobile communication system is the same as that of the existing time division duplex mobile communication system, and the uplink frequency band and downlink frequency band of the mobile communication system based on the time division duplex mode are configured, and the uplink frequency band and the downlink frequency band are asymmetrical. The invention also provides a mobile communication system based on time division duplex mode. The scheme of the invention can avoid the uplink and downlink interference when the mobile communication system adopting the time division duplex mode does not reserve a guard band when mixed with other mobile communication systems.
Description
技术领域 technical field
本发明涉及移动通信技术领域，尤其涉及一种基于时分双工模式的移动通信系统及配置上下行频段的方法。The invention relates to the technical field of mobile communication, in particular to a mobile communication system based on a time division duplex mode and a method for configuring uplink and downlink frequency bands.
背景技术 Background technique
时分双工(TDD，Time Division Duplexing)技术，是移动通信系统使用的双工技术之一，与频分双工(FDD)相对应。Time Division Duplexing (TDD, Time Division Duplexing) technology is one of the duplexing technologies used in mobile communication systems, corresponding to Frequency Division Duplexing (FDD).
如图1所示，在TDD模式的移动通信系统中，基站到移动台之间的上行和下行通信使用同一频段的不同时隙，用时间来分离接收和传送信道，上下行占用完全相同的频段，且频段宽度也完全相同。其单方向的资源在时间上是不连续的，时间资源在两个方向上进行了分配。As shown in Figure 1, in a mobile communication system in TDD mode, the uplink and downlink communications between the base station and the mobile station use different time slots in the same frequency band, using time to separate the receiving and transmitting channels, and the uplink and downlink occupy exactly the same frequency band , and the frequency band width is exactly the same. The resources in one direction are discontinuous in time, and the time resources are allocated in two directions.
FDD是在分离的两个对称频率信道上分别进行上行和下行通信，用保护频段来分离上行和下行信道。FDD必须采用成对的频率，依靠频率来区分上下行链路，其单方向的资源在时间上是连续的。FDD performs uplink and downlink communications on two separate symmetrical frequency channels, and uses guard frequency bands to separate uplink and downlink channels. FDD must use paired frequencies, depending on the frequency to distinguish the uplink and downlink, and its unidirectional resources are continuous in time.
TDD双工方式的工作特点使TDD相对于FDD具有如下优势：The working characteristics of the TDD duplex mode make TDD have the following advantages over FDD:
(1)无需成对的频率，能够灵活配置频率，使用FDD系统不易使用的零散频段；(1) There is no need for paired frequencies, the frequency can be flexibly configured, and scattered frequency bands that are not easy to use in the FDD system are used;
(2)可以通过调整上下行时隙转换点，灵活配置上下行时隙比例，能够很好地支持非对称业务；(2) By adjusting the conversion point of uplink and downlink time slots, the ratio of uplink and downlink time slots can be flexibly configured, which can well support asymmetric services;
(3)具有上下行信道一致性，基站的接收和发送可以共用部分射频单元，降低了设备成本；(3) It has the consistency of uplink and downlink channels, and the reception and transmission of the base station can share part of the radio frequency unit, which reduces the equipment cost;
(4)接收上下行数据时，不需要收发隔离器，只需要一个开关即可，降低了设备的复杂度；(4) When receiving uplink and downlink data, there is no need for a transceiver isolator, only one switch is needed, which reduces the complexity of the device;
(5)具有上下行信道互惠性，能够更好地采用传输预处理技术，如预RAKE技术，联合传输(JT)技术，智能天线技术等，能有效地降低移动终端的处理复杂性。(5) It has reciprocity between uplink and downlink channels, and can better adopt transmission preprocessing technologies, such as pre-RAKE technology, joint transmission (JT) technology, smart antenna technology, etc., and can effectively reduce the processing complexity of mobile terminals.
但是，现有TDD移动通信系统也有如下不足：However, the existing TDD mobile communication system also has the following deficiencies:
TDD系统的上下行传输占满全部频段，当与其他移动通信系统混合部署时，工作频带内部或工作频带边缘的上下行干扰将不可避免；若通过预留保护带的方式进行频带隔离，则对频谱资源又是一种极大的浪费。The uplink and downlink transmission of the TDD system occupies the entire frequency band. When it is mixed with other mobile communication systems, the uplink and downlink interference inside the working frequency band or at the edge of the working frequency band will be inevitable; if the frequency band is isolated by reserving the guard band, the Spectrum resources are also a great waste.
发明内容 Contents of the invention
本发明提供了一种移动通信系统及配置上下行频段的方法，可以在不预留保护带的情况下避免与其他移动通信系统混合部署时的上下行干扰。The invention provides a mobile communication system and a method for configuring uplink and downlink frequency bands, which can avoid uplink and downlink interference during mixed deployment with other mobile communication systems without reserving a guard band.
本发明实施例提出一种配置上下行频段的方法，该方法应用于基于时分双工模式的移动通信系统中，配置所述基于时分双工模式的移动通信系统的上行频段和下行频段，所述上行频段与下行频段不对称。The embodiment of the present invention proposes a method for configuring uplink and downlink frequency bands. The method is applied to a mobile communication system based on time division duplex mode, and configures the uplink frequency band and downlink frequency band of the mobile communication system based on time division duplex mode. The uplink frequency band is asymmetrical to the downlink frequency band.
所述上行频段与下行频段不对称包括但不限于如下任一种情况：The asymmetry between the uplink frequency band and the downlink frequency band includes but is not limited to any of the following situations:
所述上行频段与下行频段的带宽相等，上行频段的中心点与下行频段的中心点不重合；The bandwidth of the uplink frequency band and the downlink frequency band are equal, and the center point of the uplink frequency band does not coincide with the center point of the downlink frequency band;
所述上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点不重合；The bandwidths of the uplink frequency band and the downlink frequency band are not equal, and the center point of the uplink frequency band does not coincide with the center point of the downlink frequency band;
所述上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点重合；The bandwidths of the uplink frequency band and the downlink frequency band are not equal, and the center point of the uplink frequency band coincides with the center point of the downlink frequency band;
所述上行频段和/或下行频段具有至少一个间断点；The uplink frequency band and/or the downlink frequency band have at least one discontinuity point;
所述上行频段和下行频段各具有一个间断点，且间断点完全重合。Each of the uplink frequency band and the downlink frequency band has a discontinuity point, and the discontinuity points are completely overlapped.
所述上行频段和下行频段不存在重合的部分。There is no overlapping part between the uplink frequency band and the downlink frequency band.
较佳地，所述配置所述基于时分双工模式的移动通信系统的上行频段和下行频段包括：Preferably, the configuration of the uplink frequency band and downlink frequency band of the TDD-based mobile communication system includes:
预先设置多种上下行频段的配置模式；Preset the configuration mode of multiple uplink and downlink frequency bands;
根据与所述基于时分双工模式的移动通信系统混合部署的其他移动通信系统的系统特性，估计每一种配置模式下系统间干扰的大小；Estimating the magnitude of inter-system interference in each configuration mode according to the system characteristics of other mobile communication systems that are mixed with the mobile communication system based on the time division duplex mode;
选择出系统间干扰最小的一种配置模式作为所述基于时分双工模式的移动通信系统采用的上下行频段配置模式。A configuration mode with the least inter-system interference is selected as the uplink and downlink frequency band configuration mode adopted by the mobile communication system based on the time division duplex mode.
本发明实施例还提出一种基于时分双工模式的移动通信系统，所述移动通信系统包括基站和移动终端，所述基站和移动终端配置时分双工时隙，所述基站到移动终端的下行频段与移动终端到基站的上行频段不对称。The embodiment of the present invention also proposes a mobile communication system based on time-division duplex mode. The mobile communication system includes a base station and a mobile terminal. The base station and the mobile terminal are configured with time-division duplex time slots. The downlink from the base station to the mobile terminal The frequency band is asymmetrical to the uplink frequency band from the mobile terminal to the base station.
从以上技术方案可以看出，在时分双工模式下，将上行频段与下行频段配置为不对称，这样上下行传输就不会占满全部频段，因此有助于改善当与其他移动通信系统混合部署时，工作频带内部或工作频带边缘的上下行干扰。From the above technical solutions, it can be seen that in the time division duplex mode, the uplink frequency band and the downlink frequency band are configured asymmetrically, so that the uplink and downlink transmissions will not occupy all the frequency bands, so it helps to improve when mixed with other mobile communication systems. During deployment, the uplink and downlink interference within the working frequency band or at the edge of the working frequency band.
附图说明 Description of drawings
图1为现有时分双工移动通信系统的上下行频段配置示意图；FIG. 1 is a schematic diagram of configuration of uplink and downlink frequency bands of an existing time division duplex mobile communication system;
图2为LTE TDD系统的典型帧结构示意图；Fig. 2 is a schematic diagram of a typical frame structure of an LTE TDD system;
图3为本发明实施例一的上下行频段配置示意图；FIG. 3 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 1 of the present invention;
图4为本发明实施例二的上下行频段配置示意图；FIG. 4 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 2 of the present invention;
图5为本发明实施例三的上下行频段配置示意图；FIG. 5 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 3 of the present invention;
图6为本发明实施例四的上下行频段配置示意图；FIG. 6 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 4 of the present invention;
图7为本发明实施例五的上下行频段配置示意图；FIG. 7 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 5 of the present invention;
图8为本发明实施例六的上下行频段配置示意图；FIG. 8 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 6 of the present invention;
图9为本发明实施例七的上下行频段配置示意图；FIG. 9 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 7 of the present invention;
图10为本发明实施例八的上下行频段配置示意图；FIG. 10 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 8 of the present invention;
图11为本发明实施例九的上下行频段配置示意图。FIG. 11 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 9 of the present invention.
具体实施方式 Detailed ways
在不考虑空间分配的情况下，通信资源包括时间和频率两个方面。时分双工的本质，就是将时间划分为一个一个的时隙，对于每个时隙，规定其是上行时隙或者是下行时隙，分别用于传输上行数据或下行数据。Without considering space allocation, communication resources include time and frequency. The essence of TDD is to divide time into time slots one by one. For each time slot, specify whether it is an uplink time slot or a downlink time slot, and is used to transmit uplink data or downlink data respectively.
LTE TDD系统的一种典型帧结构如图2所示。每一个无线帧由两个半帧(half-frame)构成，每一个半帧长度为5ms。每个半帧划分成8个长度为0.5ms的常规时隙(Time Slot，TS)和1个长度为1ms的特殊区域，每两个常规时隙配对组成一个子帧，其中第i个子帧由第2i个和2i+1个时隙构成。该特殊区域由下行导频时隙(DwPTS)、保护时隙(GP)和上行导频时隙(UpPTS)构成，DwPTS和UpPTS的长度是可配置的，并且DwPTS、GP以及UpPTS的总长度等于1ms。子帧1和子帧6包含DwPTS、GP以及UpPTS。其中，子帧0和子帧5以及DwPTS永远预留为下行传输。其他子帧可以配置为下行传输或上行传输。LTE TDD系统支持5ms和10ms的切换周期。A typical frame structure of LTE TDD system is shown in Figure 2. Each radio frame is composed of two half-frames, and the length of each half-frame is 5ms. Each half-frame is divided into 8 regular time slots (Time Slot, TS) with a length of 0.5 ms and a special area with a length of 1 ms. Every two regular time slots are paired to form a subframe, where the i-th subframe consists of The 2ith and 2i+1 time slots are formed. The special area consists of Downlink Pilot Time Slot (DwPTS), Guard Time Slot (GP) and Uplink Pilot Time Slot (UpPTS). The length of DwPTS and UpPTS is configurable, and the total length of DwPTS, GP and UpPTS is equal to 1ms. Subframe 1 and subframe 6 include DwPTS, GP and UpPTS. Among them, subframe 0 and subframe 5 and DwPTS are always reserved for downlink transmission. Other subframes can be configured as downlink transmission or uplink transmission. The LTE TDD system supports switching periods of 5ms and 10ms.
目前规范确定支持的时隙比例配置如表1所示。Table 1 shows the supported slot ratio configurations determined by the current specification.
表1Table 1
其中，字母D表示下行时隙，字母U表示上行时隙，字母S表示特殊时隙。配置方案0、1、2均为5ms的时隙转换点周期，配置方案3-6为10ms的时隙转换点周期。Among them, the letter D represents the downlink time slot, the letter U represents the uplink time slot, and the letter S represents the special time slot. Configuration schemes 0, 1, and 2 all have a time slot switching point period of 5ms, and configuration schemes 3-6 have a time slot switching point period of 10ms.
现有的时分双工移动通信系统中，上行时隙和下行时隙所占用的频段是完全相同的。本发明提出的移动通信系统采用与现有的时分双工移动通信技术相同的时隙配置方案以及时间同步要求，同时根据网络实际部署需求，设置上下行频段不对称。所谓上下行频段对称，是指上行频段和下行频段的带宽相同，且中心点重合。上下行频段除了对称以外的其他情况均为不对称。In the existing time division duplex mobile communication system, the frequency bands occupied by the uplink time slot and the downlink time slot are completely the same. The mobile communication system proposed by the present invention adopts the same time slot configuration scheme and time synchronization requirements as the existing time-division duplex mobile communication technology, and at the same time sets asymmetric uplink and downlink frequency bands according to actual network deployment requirements. The so-called symmetry of the uplink and downlink frequency bands means that the bandwidth of the uplink frequency band and the downlink frequency band are the same, and the center points coincide. The uplink and downlink frequency bands are all asymmetrical except for the symmetrical ones.
其中，该系统上下行频段的设置可以基于但不限于如下网络部署需求：Among them, the setting of the uplink and downlink frequency bands of the system can be based on but not limited to the following network deployment requirements:
1、与该基于时分双工模式的移动通信系统混合部署的其他系统的系统特性(如上下行资源配置、子频带带宽、发射功率、射频指标等)；1. System characteristics (such as uplink and downlink resource configuration, sub-band bandwidth, transmit power, radio frequency index, etc.)
2、其他系统的信号分量可能落入该基于时分双工模式的移动通信系统频带内的情况。2. The signal components of other systems may fall within the frequency band of the mobile communication system based on the time division duplex mode.
此外，本发明中基于时分双工模式的移动通信系统上下行频段之间的频率偏移可以是单向的(上行频段与下行频段的带宽有一个端点是重合的)，也可以是双向的(端点均不重合)；该频率偏移可以是扩展的(带宽较现有技术更宽)，也可以是收缩的(带宽较现有技术更窄)；上下行频段所占用的频率可以有重叠部分，也可以没有重叠部分；上下行频段带宽可以相同，也可以不同；上下行频段所占用的频率可以是连续的，也可以有间断点；该间断点可以是单个的，也可以是多个的；上下行频段内部的间断点数量可以相同，也可以不同；上下行频段内部间断点所占用的频率可以重叠，也可以不重叠；In addition, the frequency offset between the uplink and downlink frequency bands of the mobile communication system based on the time division duplex mode in the present invention can be unidirectional (the bandwidth of the uplink frequency band and the downlink frequency band have an endpoint that coincides), and can also be bidirectional ( The endpoints do not coincide); the frequency offset can be extended (the bandwidth is wider than the existing technology), or it can be contracted (the bandwidth is narrower than the existing technology); the frequencies occupied by the uplink and downlink frequency bands can overlap , or there may be no overlap; the bandwidth of the uplink and downlink frequency bands may be the same or different; the frequencies occupied by the uplink and downlink frequency bands may be continuous or have discontinuities; the discontinuities may be single or multiple ; The number of discontinuities inside the uplink and downlink frequency bands can be the same or different; the frequencies occupied by the internal discontinuities in the uplink and downlink frequency bands can overlap or not overlap;
图3为本发明实施例一的上下行频段配置示意图。其中，上下行频段的带宽仍然相同，但是上行频段的中间频率与下行频段的中间频率不再对齐，而是具有偏移量a。该实施例中，上行频段与下行频段的带宽相等，上行频段的中心点与下行频段的中心点不重合。FIG. 3 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 1 of the present invention. Wherein, the bandwidths of the uplink and downlink frequency bands are still the same, but the middle frequency of the uplink frequency band and the middle frequency of the downlink frequency band are no longer aligned, but have an offset a. In this embodiment, the bandwidths of the uplink frequency band and the downlink frequency band are equal, and the center points of the uplink frequency band and the center points of the downlink frequency band do not coincide.
图4为本发明实施例二的上下行频段配置示意图。上下行频段带宽不等，表现为DL的高频部分(右侧)相对于UL具有偏移量c，UL的低频部分相对于DL具有偏移量b，b不等于c。该实施例中，上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点不重合。FIG. 4 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 2 of the present invention. The bandwidth of the uplink and downlink frequency bands is different, which means that the high-frequency part of DL (right side) has an offset c relative to UL, and the low-frequency part of UL has an offset b relative to DL, and b is not equal to c. In this embodiment, the bandwidths of the uplink frequency band and the downlink frequency band are not equal, and the center points of the uplink frequency band and the center points of the downlink frequency band do not coincide.
图5为本发明实施例三的上下行频段配置示意图。上下行频段带宽不等，下行频段扩展(也可看作上行频段收缩)。该实施例中，上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点重合。FIG. 5 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 3 of the present invention. The bandwidth of the uplink and downlink frequency bands is not equal, and the downlink frequency band is expanded (it can also be regarded as the uplink frequency band shrinks). In this embodiment, the bandwidths of the uplink frequency band and the downlink frequency band are different, and the center point of the uplink frequency band coincides with the center point of the downlink frequency band.
图6为本发明实施例四的上下行频段配置示意图。上下行频段带宽不等，上行频段扩展(也可看作下行频段收缩)。该实施例中，上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点不重合。FIG. 6 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 4 of the present invention. The bandwidth of the uplink and downlink frequency bands is not equal, and the uplink frequency band is expanded (it can also be regarded as the downlink frequency band shrinks). In this embodiment, the bandwidths of the uplink frequency band and the downlink frequency band are not equal, and the center points of the uplink frequency band and the center points of the downlink frequency band do not coincide.
图7为本发明实施例五的上下行频段配置示意图。上下行频段带宽不等，下行频段扩展，下行频段所占用的频率中有1个间断点。FIG. 7 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 5 of the present invention. The bandwidth of the uplink and downlink frequency bands is different, the downlink frequency band is extended, and there is a discontinuity in the frequency occupied by the downlink frequency band.
图8为本发明实施例六的上下行频段配置示意图。上下行频段带宽相等，上行频段扩展，上行频段所占用的频率中有1个间断点。FIG. 8 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 6 of the present invention. The bandwidth of the uplink and downlink frequency bands is equal, the uplink frequency band is extended, and there is a discontinuity in the frequency occupied by the uplink frequency band.
图9为本发明实施例七的上下行频段配置示意图。上下行频段带宽不等，下行频段所占用的频率中有2个间断点。FIG. 9 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 7 of the present invention. The bandwidth of the uplink and downlink frequency bands is different, and there are two discontinuous points in the frequency occupied by the downlink frequency band.
图10为本发明实施例八的上下行频段配置示意图。上下行频段带宽不等，上下行频段所占用的频率中各有1个间断点，且间断点完全重合。FIG. 10 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 8 of the present invention. The bandwidths of the uplink and downlink frequency bands are not equal, and each of the frequencies occupied by the uplink and downlink frequency bands has a discontinuity point, and the discontinuity points are completely overlapped.
图7-10的特点为：所述上行频段和/或下行频段具有至少一个间断点。The feature of Fig. 7-10 is that: the uplink frequency band and/or the downlink frequency band has at least one discontinuity point.
图11为本发明实施例九的上下行频段配置示意图。上下行频段所占用的频率没有重叠部分。该实施例的上下行频段类似于FDD系统中的频段配置，但有如下不同：首先，仍然采用TDD系统的时隙配置方式；其次，上下行传输需满足时间同步；再次，上下行频段的宽度不要求相等，而FDD系统中上下行频段宽度必须相等。FIG. 11 is a schematic diagram of configuration of uplink and downlink frequency bands according to Embodiment 9 of the present invention. The frequencies occupied by the uplink and downlink bands do not overlap. The uplink and downlink frequency bands of this embodiment are similar to the frequency band configuration in the FDD system, but there are the following differences: first, the time slot configuration method of the TDD system is still used; secondly, the uplink and downlink transmission needs to meet time synchronization; again, the width of the uplink and downlink frequency bands It is not required to be equal, but the width of the uplink and downlink frequency bands in the FDD system must be equal.
较佳地，可以预先设置多种上下行频段的配置模式，所述每一种配置模式可以对应于上述一个实施例，但不限于上述实施例所列举的各种情况。根据与所述基于时分双工模式的移动通信系统混合部署的其他移动通信系统的系统特性，估计每一种配置模式下系统间干扰的大小；选择出系统间干扰最小的一种配置模式作为所述基于时分双工模式的移动通信系统采用的上下行频段配置模式。Preferably, multiple configuration modes of uplink and downlink frequency bands can be preset, and each configuration mode can correspond to the above-mentioned one embodiment, but is not limited to various situations listed in the above-mentioned embodiment. According to the system characteristics of other mobile communication systems mixed with the mobile communication system based on the time division duplex mode, estimate the size of the inter-system interference in each configuration mode; select a configuration mode with the smallest inter-system interference as the selected configuration mode The uplink and downlink frequency band configuration mode adopted by the mobile communication system based on the time division duplex mode is described.
本发明实施例提出了一种基于时分双工模式的移动通信系统，所述时分双工移动通信系统包括基站和移动终端，所述基站和移动终端配置时分双工时隙，所述基站到移动终端的下行频段与移动终端到基站的上行频段不对称。The embodiment of the present invention proposes a mobile communication system based on time-division duplex mode. The time-division duplex mobile communication system includes a base station and a mobile terminal. The base station and the mobile terminal are configured with time-division duplex time slots. The downlink frequency band of the terminal is asymmetrical to the uplink frequency band from the mobile terminal to the base station.
其中，上行频段和下行频段不对称，可以是如下情况之一：Wherein, the uplink frequency band and the downlink frequency band are asymmetrical, which may be one of the following situations:
所述上行频段与下行频段的带宽相等，上行频段的中心点与下行频段的中心点不重合；The bandwidth of the uplink frequency band and the downlink frequency band are equal, and the center point of the uplink frequency band does not coincide with the center point of the downlink frequency band;
所述上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点不重合；The bandwidths of the uplink frequency band and the downlink frequency band are not equal, and the center point of the uplink frequency band does not coincide with the center point of the downlink frequency band;
所述上行频段与下行频段的带宽不等，且上行频段的中心点与下行频段的中心点重合；The bandwidths of the uplink frequency band and the downlink frequency band are not equal, and the center point of the uplink frequency band coincides with the center point of the downlink frequency band;
所述上行频段和/或下行频段具有至少一个间断点；The uplink frequency band and/or the downlink frequency band have at least one discontinuity point;
所述上行频段和下行频段各具有一个间断点，且间断点完全重合；Each of the uplink frequency band and the downlink frequency band has a discontinuity point, and the discontinuity points are completely overlapped;
所述上行频段和下行频段不存在重合的部分。There is no overlapping part between the uplink frequency band and the downlink frequency band.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.
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