CN102281635B - Measurement pilot frequency sending method and device and measurement pilot frequency receiving method and device - Google Patents
Measurement pilot frequency sending method and device and measurement pilot frequency receiving method and device Download PDFInfo
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Abstract
The invention provides a channel state information reference signal sending method and a receiving method. The methods comprise the following steps: a base station selects a channel state information reference signal subframe configuration from a pre-configured channel state information reference signal subframe configuration table and sends the channel state information reference signal periodically in the downlink subframe according to the channel state information reference signal subframe configuration; the base station notifies the channel state information reference signal subframe configuration information to a terminal. The invention provides a concrete scheme and a related signaling design of channel state information reference signal period configuration. The channel state information reference signal period configuration of TDD and FDD systems can be realized. Simultaneously, measuring precision is taken into consideration in the methods so that system performance can be optimized.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of measurement pilot frequency sending method and device and measurement pilot frequency method of reseptance and device.
Background technology
LTE-A standardization effort carries out, and for meeting the requirement of its peak rate, 8X8MIMO becomes guardian technique.In this case, just need to be configured respectively the reference signal of these 8 antenna ports.When guaranteeing systematic function, reduce as much as possible the expense of being introduced by reference signal, 3GPP meeting has adopted measurement pilot frequency (Channel State Information Reference Signal, CSI-RS) and demodulation pilot frequency (De-Modulation Reference Signal, DMRS) method that separately designs and optimize, be that demodulation adopts dedicated pilot, measure and adopt measurement pilot frequency.The concrete scheme that also there is no at present clear and definite measurement pilot frequency configuration.
In LTE system, measurement and demodulation all adopt the exclusive pilot tone in community (Cell-SpecificReference Signal, CRS).The exclusive pilot tone in community is that full bandwidth configuration concurrency send in each subframe.From the angle realizing, measure in any subframe and can complete.
In LTE-A community, need to send periodically measurement pilot frequency.On the one hand, measurement is restricted, and can only in measurement pilot frequency configuration, realize and measuring.Therefore, reasonable disposition measurement pilot frequency (cycle and/or subframe position) has obvious impact to systematic function.On the other hand, because tdd frame structure exists various configurations (as shown in table 1), under various configurations, the number of descending sub frame is different, but also comprises some special subframes (as special time slot, subframe 0 and subframe 5).Therefore, in TDD (time division multiplexing) system configuration measurement pilot frequency more complicated.
Up-downlink configuration
Summary of the invention
For the one or more problems that exist in correlation technique, the object of the present invention is to provide a kind of measurement pilot frequency sending method and device and measurement pilot frequency method of reseptance and device, with in addressing the above problem one of at least.
For achieving the above object, according to embodiments of the invention, a kind of measurement pilot frequency sending method is provided, the method comprises: a kind of measurement pilot frequency sub-frame configuration is selected in base station from pre-configured measurement pilot frequency sub-frame configuration table, and in descending sub frame, periodically sends measurement pilot frequency according to measurement pilot frequency sub-frame configuration; And base station is by measurement pilot frequency subframe configuration information notification terminal.
According to embodiments of the invention, a kind of measurement pilot frequency method of reseptance is provided, the method comprises: terminal receives the measurement pilot frequency subframe configuration information that base station sends; Terminal is determined corresponding measurement pilot frequency sub-frame configuration according to measurement pilot frequency subframe configuration information and pre-configured measurement pilot frequency sub-frame configuration table, and determines according to determined measurement pilot frequency sub-frame configuration the subframe that sends measurement pilot frequency; And terminal receives measurement pilot frequency in determined subframe.
According to embodiments of the invention, a kind of measurement pilot frequency dispensing device is provided, this device comprises: measurement pilot frequency configuration module, for pre-configured measurement pilot frequency sub-frame configuration table; Measurement pilot frequency sending module is selected a kind of measurement pilot frequency sub-frame configuration from measurement pilot frequency sub-frame configuration table, and according to measurement pilot frequency sub-frame configuration, in descending sub frame, periodically sends measurement pilot frequency; And information sending module, for by measurement pilot frequency subframe configuration information notification terminal.
According to embodiments of the invention, a kind of measurement pilot frequency receiving system is provided, this device comprises: information receiving module, the measurement pilot frequency subframe configuration information sending for receiving base station; Subframe determination module, for determining measurement pilot frequency sub-frame configuration according to measurement pilot frequency subframe configuration information and pre-configured measurement pilot frequency sub-frame configuration table, and determines the subframe that sends measurement pilot frequency according to determined measurement pilot frequency sub-frame configuration; And receiver module, for receive measurement pilot frequency in determined subframe.
The present invention has provided concrete scheme and the related signaling design of measurement pilot frequency cycle configuration, has really realized the measurement pilot frequency cycle configuration of TDD system.Meanwhile, these schemes have taken into full account the precision of measuring, and have optimized systematic function.
Accompanying drawing explanation
Fig. 1 is the flow chart of measurement pilot frequency sending method according to an embodiment of the invention;
Fig. 2 is the flow chart of measurement pilot frequency method of reseptance according to an embodiment of the invention;
Fig. 3 is the block diagram of measurement pilot frequency dispensing device according to an embodiment of the invention; And
Fig. 4 is the block diagram of measurement pilot frequency receiving system according to an embodiment of the invention.
Embodiment
In order to reduce the expense of measurement pilot frequency, the mode that the measurement pilot frequency employing cycle sends.In LTE-A community, need transmission measurement pilot tone periodically.But due to the particularity of tdd frame structure (as shown in table 1), so need to configure to measurement pilot transmission (cycle and/or subframe position), do special optimization.The present invention has provided concrete scheme and the related signaling design of measurement pilot frequency cycle configuration, has really realized the measurement pilot frequency cycle configuration of TDD system.
Fig. 1 is the flow chart of measurement pilot frequency sending method according to an embodiment of the invention.As shown in Figure 1, measurement pilot frequency sending method comprises:
S102, a kind of measurement pilot frequency sub-frame configuration is selected in base station from pre-configured measurement pilot frequency sub-frame configuration table, and in descending sub frame, periodically sends measurement pilot frequency according to measurement pilot frequency sub-frame configuration; And
S104, base station is by measurement pilot frequency subframe configuration information notification terminal.
Wherein, measurement pilot frequency sub-frame configuration can comprise following one of at least: configuration cycle, corresponding to one or more subframes skews of configuration cycle.Measurement pilot frequency subframe configuration information can be sequence number corresponding to measurement pilot frequency sub-frame configuration, the mode of the measurement pilot frequency sub-frame configuration that also can obtain for other receiving terminals.
In the situation that this measurement pilot frequency sending method is used for time division multiplex system:
Base station can be configured in the measurement pilot frequency of all communities in a subframe or by the measurement pilot frequency of part community and be configured in different subframes.In the situation that the measurement pilot frequency of part community is configured in different subframes, every kind of configuration cycle is as far as possible corresponding to different subframe skews.
By the skew of configuration cycle and/or subframe, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle.Wherein, uniformly-spaced the cycle is: the initial subframe number of subframe skew indicating downlink measurement pilot frequency, and uniformly-spaced send according to configuration cycle.The unequal interval cycle is: subframe skew indication sends the subframe numbers of downlink measurement pilot frequency in configuration cycle, and periodically sends according to configuration cycle.
The unequal interval cycle comprises: configuration cycle, while being 2ms, has at least three subframes to send measurement pilot frequency in a radio frames; Configuration cycle, while being 5ms, has two subframes to send measurement pilot frequency in a radio frames; Configuration cycle, while being 10ms, only has a subframe to send measurement pilot frequency in a radio frames; And/or configuration cycle while being 20ms, in two radio frames, only there is a subframe to send measurement pilot frequency; When configuration cycle is 30ms, in three radio frames, only there is a subframe to send measurement pilot frequency.It should be noted that configuration cycle can be worth for other, and be not limited to above four kinds of situations.
The subframe that sends measurement pilot frequency can be for only for subframe, subframe 5, subframe 0, the special time slot of transmitting physical DSCH Downlink Shared Channel according to priority orders.
Special time slot is divided into three parts: DwPTS, GP and UpPTS.Wherein DwPTS is for downlink transfer, and GP is up-downgoing protection interval, and UpPTS is for uplink.If downlink measurement pilot frequency need to configure at special time slot, can be configured in the DwPTS part of special time slot, terminal receives in corresponding part.
Measurement pilot frequency configuration information in measurement pilot frequency sub-frame configuration table can be corresponding or uncorrelated one by one with frame structure.
In measurement pilot frequency sending method for the Frequency Division Multiplexing system in the situation that: configuration cycle can comprise following one of at least: 2ms, 5ms, 10ms, 20ms, 30ms.
By configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the subframe that sends measurement pilot frequency does not comprise PBCH place subframe, SSH place subframe and PSH place subframe as far as possible.
The in the situation that of needs, base station can be sent to terminal by frame structure information, so that terminal is carried out measurement pilot frequency reception and detection, terminal also can obtain frame structure information by other means.
Fig. 2 is the flow chart of measurement pilot frequency method of reseptance according to an embodiment of the invention.As shown in Figure 2, the method comprises:
S202, terminal receives the measurement pilot frequency subframe configuration information that base station sends; And
S204, terminal is determined corresponding measurement pilot frequency sub-frame configuration according to measurement pilot frequency subframe configuration information and pre-configured measurement pilot frequency sub-frame configuration table, and determines according to determined measurement pilot frequency sub-frame configuration the subframe that sends measurement pilot frequency;
S206, terminal receives measurement pilot frequency in determined subframe.Wherein, subframe does not comprise sub-frame of uplink.
It is one of following that measurement pilot frequency sub-frame configuration can at least comprise: configuration cycle, corresponding to one or more subframes skews of configuration cycle.
Measurement pilot frequency subframe configuration information can be sequence number corresponding to measurement pilot frequency sub-frame configuration, the mode of the measurement pilot frequency sub-frame configuration that also can obtain for other receiving terminals.
In measurement pilot frequency sending method, for the time division multiplex system in the situation that, by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle.Uniformly-spaced the cycle is: by the initial subframe number of subframe skew indicating downlink measurement pilot frequency, uniformly-spaced send according to configuration cycle; And the unequal interval cycle is: by sending the subframe numbers of downlink measurement pilot frequency in the one or more radio frames of subframe skew indication, and send according to this configuration in subsequent subframe.
The subframe that sends measurement pilot frequency can comprise following one of at least: only for subframe, subframe 5, subframe 0, the special time slot of transmitting physical DSCH Downlink Shared Channel.
Measurement pilot frequency configuration in measurement pilot frequency sub-frame configuration table is corresponding or uncorrelated one by one with frame structure.
In the situation that measurement pilot frequency sending method is used for Frequency Division Multiplexing system, by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the subframe that sends measurement pilot frequency does not comprise Physical Broadcast Channel place subframe, primary synchronization channel place subframe and auxiliary synchronization channel place subframe.
Fig. 3 is the block diagram of measurement pilot frequency dispensing device according to an embodiment of the invention.As shown in Figure 3, this device comprises: measurement pilot frequency configuration module 302, for pre-configured measurement pilot frequency sub-frame configuration table; Measurement pilot frequency sending module 304 is selected a kind of measurement pilot frequency sub-frame configuration from measurement pilot frequency sub-frame configuration table, and according to measurement pilot frequency sub-frame configuration, in descending sub frame, periodically sends measurement pilot frequency; And information sending module 306, for by measurement pilot frequency subframe configuration information notification terminal.
Wherein, measurement pilot frequency sub-frame configuration can at least comprise one of following: configuration cycle, corresponding to one or more subframes skews of configuration cycle.Measurement pilot frequency subframe configuration information is sequence number corresponding to measurement pilot frequency sub-frame configuration, the mode of the measurement pilot frequency sub-frame configuration that also can obtain for other receiving terminals.
In the situation that measurement pilot frequency dispensing device is used for time division multiplex system:
Measurement pilot frequency configuration module can be configured in the measurement pilot frequency of all communities in a subframe or by the measurement pilot frequency of part community and be configured in different subframes.In the situation that the measurement pilot frequency of part community is configured in different subframes, measurement pilot frequency configuration module makes every kind of configuration cycle corresponding to different subframe skews.
By the skew of configuration cycle and/or subframe, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle.Wherein, uniformly-spaced the cycle is: the initial subframe number of subframe skew indicating downlink measurement pilot frequency, and uniformly-spaced send according to configuration cycle.The unequal interval cycle is: the interior subframe numbers that sends downlink measurement pilot frequency of one or more radio frames of subframe skew indication configuration cycle, and according to this configuration, send in subsequent subframe.The unequal interval cycle comprises: configuration cycle, while being 2ms, has at least three subframes to send measurement pilot frequency in a radio frames; Configuration cycle, while being 5ms, has two subframes to send measurement pilot frequency in a radio frames; Configuration cycle, while being 10ms, only has a subframe to send measurement pilot frequency in a radio frames; And/or configuration cycle while being 20ms, in two radio frames, only there is a subframe to send measurement pilot frequency; When configuration cycle is 30ms, in three radio frames, only there is a subframe to send measurement pilot frequency.It should be noted that configuration cycle can be worth for other, and be not limited to above four kinds of situations.
According to priority orders, the subframe that sends measurement pilot frequency only can be configured to subframe, subframe 5, subframe 0, the special time slot for transmitting physical DSCH Downlink Shared Channel.Special time slot is divided into three parts: DwPTS, GP and UpPTS.Wherein DwPTS is for downlink transfer, and GP is up-downgoing protection interval, and UpPTS is for uplink.If downlink measurement pilot frequency need to configure at special time slot, can be configured in the DwPTS part of special time slot, terminal receives in corresponding part.
Measurement pilot frequency configuration information in measurement pilot frequency sub-frame configuration table can be corresponding or uncorrelated one by one with frame structure.
In the situation that measurement pilot frequency dispensing device is used for Frequency Division Multiplexing system:
By configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the subframe that sends measurement pilot frequency does not comprise PBCH place subframe, SSH place subframe and PSH place subframe as far as possible.Configuration cycle can comprise following one of at least: 2ms, 5ms, 10ms, 20ms, 30ms.
Fig. 4 is the block diagram of measurement pilot frequency receiving system according to an embodiment of the invention.As shown in Figure 4, this device comprises: information receiving module 402, the measurement pilot frequency subframe configuration information sending for receiving base station; Subframe determination module 404, for determining measurement pilot frequency sub-frame configuration according to measurement pilot frequency subframe configuration information and pre-configured measurement pilot frequency sub-frame configuration table, and determines the subframe that sends measurement pilot frequency according to determined measurement pilot frequency sub-frame configuration; And receiver module 406, for receive measurement pilot frequency in determined subframe.
It is one of following that measurement pilot frequency sub-frame configuration at least can comprise: configuration cycle, corresponding to one or more subframes skews of configuration cycle.
Measurement pilot frequency subframe configuration information can be sequence number corresponding to measurement pilot frequency sub-frame configuration,, the mode of the measurement pilot frequency sub-frame configuration that also can obtain for other receiving terminals.
In measurement pilot frequency sending method, for the time division multiplex system in the situation that, by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle.Uniformly-spaced the cycle is: by the initial subframe number of subframe skew indicating downlink measurement pilot frequency, uniformly-spaced send according to configuration cycle; And the unequal interval cycle is: by sending the subframe numbers of downlink measurement pilot frequency in the one or more radio frames of subframe skew indication, and send according to this configuration in subsequent subframe.
The subframe that sends measurement pilot frequency can comprise following one of at least: only for subframe, subframe 5, subframe 0, the special time slot of transmitting physical DSCH Downlink Shared Channel.
Measurement pilot frequency configuration in measurement pilot frequency sub-frame configuration table is corresponding or uncorrelated one by one with frame structure.
In the situation that measurement pilot frequency sending method is used for Frequency Division Multiplexing system, by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the subframe that sends measurement pilot frequency does not comprise Physical Broadcast Channel place subframe, primary synchronization channel place subframe and auxiliary synchronization channel place subframe.
Below introduce several concrete methods of sending and receiving:
In the situation that configure for the measurement pilot frequency of TDD system:
In following all form descriptions, { c} represents a kind of configuration mode for a, b, the subframe numbers of a, b, the concrete mapping of c representative; { situation that a}or{b}...{d} expresses possibility and exists, but a kind of configuration reality correspondence a kind of situation wherein.
Method 1: measurement pilot frequency separate configurations
Embodiment 1: the corresponding a kind of subframe skew of each configuration cycle
1, a kind of measurement pilot frequency sub-frame configuration option, according to present frame structure (as shown in table 1) and performance requirements, is selected in TDD base station from measurement pilot frequency sub-frame configuration table (as shown in table 2).Frame structure and measurement pilot frequency sub-frame configuration table are all preserved in base station.
Table 2TDD measurement pilot frequency sub-frame configuration
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {5，7，9} |
| 1 | 5 | {4，9}or{5，9} |
| 2 | 10 | {4}or{5}or{9} |
| 3 | 20 | {4}or{5}or{9} |
Table 2 is a kind of situation of measurement pilot frequency sub-frame configuration just, and real system may exist other situations, but has at least one identical point with this form:
1) by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the subframe that sends measurement pilot frequency is not limited to uniformly-spaced send, and also can send by unequal interval.In the situation that unequal interval sends, for example, can comprise: the 2ms cycle: in a radio frames, have at least three subframes to send measurement pilot frequency; The 5ms cycle: have two subframes to send measurement pilot frequency in a radio frames; The 10ms cycle: only have a subframe to send measurement pilot frequency in a radio frames.The 20ms cycle: only have a subframe to send measurement pilot frequency in two radio frames.
2) configuration cycle and how to send measurement pilot frequency be not limited to above-mentioned 4 kinds of situations within configuration cycle.
3) to pay the utmost attention under various tdd frame structures be all or repeatedly the subframe of downstream arrangements in subframe skew (transmission offset).But also there are following several special circumstances:
I. avoid the collision with other channels and pilot tone, as subframe 0 (PBCH/PSS/SSH place subframe) and subframe 5 (PSS/SSH place subframe) as far as possible;
Ii. do not get rid of subframe 5 and/or subframe 0 allocating and measuring pilot tone;
Iii. do not get rid of special time slot allocating and measuring pilot tone.
2, TDD base station is by frame structure and measurement pilot frequency subframe configuration information notification terminal.Measurement pilot frequency subframe configuration information can adopt high-level signaling or broadcast signaling, recessive or dominant Notification Method.
3, TDD base station is according to frame structure, and other information (as subframe bias internal information, measurement pilot frequency sequence information etc.) of measurement pilot frequency sub-frame configuration and measurement pilot frequency configuration send measurement pilot frequency.But following measurement pilot frequency configuration subframe does not send measurement pilot frequency:
I. sub-frame of uplink;
Ii. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
4, terminal, according to frame structure and the measurement pilot frequency subframe configuration information of TDD base station side notice, obtains measurement pilot frequency sub-frame configuration.And in the corresponding all or part of reception measurement pilot frequency of subframe.But following measurement pilot frequency configuration subframe receives measurement pilot frequency scarcely:
I. sub-frame of uplink;
Ii. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
Embodiment 2: the corresponding a plurality of subframe skews of each configuration cycle
1, a kind of measurement pilot frequency sub-frame configuration option, according to present frame structure (as shown in table 1) and performance requirements, is selected in TDD base station from measurement pilot frequency sub-frame configuration table (as shown in table 3).Frame structure and measurement pilot frequency sub-frame configuration table are all preserved in base station.
Table 3TDD measurement pilot frequency sub-frame configuration
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {5，7，9} |
| 1 | 5 | {4，9} |
| 2 | 5 | {3，8} |
| 3 | 5 | {5，9} |
| 4 | 10 | {5} |
| 5 | 10 | {9} |
| 6 | 10 | {4}or{8} |
| 7 | 20 | {5} |
| 8 | 20 | {15} |
| 9 | 20 | {9} |
Table 3 is a kind of situation of measurement pilot frequency sub-frame configuration just, and real system may exist other situations, but has at least one identical feature with this form:
1) by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is the concept of a broad sense, be not limited to uniformly-spaced send, and can be also unequal interval.For example, the 2ms cycle: have at least three subframes to send measurement pilot frequency in a radio frames; The 5ms cycle: have two subframes to send measurement pilot frequency in a radio frames; The 10ms cycle: only have a subframe to send measurement pilot frequency in a radio frames.The 20ms cycle: only have a subframe to send measurement pilot frequency in two radio frames.
2) configuration cycle and how to send measurement pilot frequency be not limited to above-mentioned 4 kinds of situations within configuration cycle.
3) to pay the utmost attention under various tdd frame structures be all or repeatedly the subframe of downstream arrangements for subframe skew.But also there are following several special circumstances:
I. avoid the collision with other channels and pilot tone, as subframe 0 (PBCH/PSS/SSH place subframe) and subframe 5 (PSS/SSH place subframe) as far as possible;
Ii. do not get rid of subframe 5 and/or subframe 0 allocating and measuring pilot tone;
Iii. do not get rid of special time slot allocating and measuring pilot tone;
Iv. under every kind of cycle, find out as far as possible 3 kinds of different subframe skews.
2, TDD base station is by frame structure and measurement pilot frequency subframe configuration information notification terminal.Measurement pilot frequency subframe configuration information can adopt high-level signaling or broadcast signaling, recessive or dominant Notification Method.
3, TDD base station is according to frame structure, and other information (as subframe bias internal information, measurement pilot frequency sequence information etc.) of measurement pilot frequency sub-frame configuration and measurement pilot frequency configuration send measurement pilot frequency.But following measurement pilot frequency configuration subframe does not send measurement pilot frequency:
I. sub-frame of uplink;
Ii. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
4, terminal, according to frame structure and the measurement pilot frequency subframe configuration information of TDD base station side notice, obtains measurement pilot frequency sub-frame configuration.And in the corresponding all or part of reception measurement pilot frequency of subframe.But following measurement pilot frequency configuration subframe receives measurement pilot frequency scarcely:
I. sub-frame of uplink;
Ii. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
Method 2: measurement pilot frequency is corresponding with frame structure
Embodiment 3: the corresponding sub-vertical shift of each configuration cycle
1, a kind of measurement pilot frequency sub-frame configuration option, according to present frame structure (as shown in table 1) and performance requirements, is selected in TDD base station from the measurement pilot frequency sub-frame configuration table (as shown in table 2-table 8) of present frame structural correspondence.Frame structure and measurement pilot frequency sub-frame configuration table are all preserved in base station.
Table 2TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 0)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | Reserved (reservation) | reserved |
| 1 | 5 | {1} |
| 2 | 10 | {5}or{1}or{6} |
| 3 | 20 | {5}or{1}or{6} |
Table 3TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 1)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {4，5，9}or{1，4，9} |
| 1 | 5 | {4，9} |
| 2 | 10 | {4}or{9}or{5}or{1} or{6} |
| 3 | 20 | {4}or{9}or{5}or{1} or{6} |
Table 4TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 2)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {3，5，8}or{4，6，9} |
| 1 | 5 | {3，8}or{4，9} |
| 2 | 10 | {3}or{4}or{8}or{9}or{5}or {1}or{6} |
| 3 | 20 | {3}or{4}or{8}or{9}or{5}or {1}or{6} |
Table 5TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 3)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {5，7，9} |
| 1 | 5 | {5，9}or{1，6} |
| 2 | 10 | {6}or{7}or{8}or{9}or{5}or {1} |
| 3 | 20 | {6}or{7}or{8}or{9}or{5}or {1} |
Table 6TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 4)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {4，6，8} |
| 1 | 5 | {4} |
| 2 | 10 | {4}or{6}or{7}or{8}or{9}or{5} or{1} |
| 3 | 20 | {4}or{6}or{7}or{8}or{9}or{5} or{1} |
Table 7TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 5)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {3，5，7，9}or{4，6，8} |
| 1 | 5 | {3}or{4} |
| 2 | 10 | {3}or{4}or{6}or{7}or{8}or{9}or{5} or{1} |
| 3 | 20 | {3}or{4}or{6}or{7}or{8}or{9}or{5} or{1} |
Table 8TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 6)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {1，5，9}or{1，6，9} |
| 1 | 5 | {5，9}or{1，6} |
| 2 | 10 | {9}or{5}or{1} |
| 3 | 20 | {9}or{5}or{1} |
Table 2-table 8 is the part possibility of measurement pilot frequency sub-frame configuration just, and real system can exist other situations, but has at least one identical point with this form:
1) by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is the concept of a broad sense, is not limited to uniformly-spaced send, and also can send for unequal interval.For example, the 2ms cycle (being less than the 5ms cycle): have at least three subframes to send measurement pilot frequency in a radio frames; The 5ms cycle: have two subframes to send measurement pilot frequency in a radio frames; The 10ms cycle: only have a subframe to send measurement pilot frequency in a radio frames.The 20ms cycle: only have a subframe to send measurement pilot frequency in two radio frames.
2) configuration cycle and how to send measurement pilot frequency be not limited to above-mentioned 4 kinds of situations within configuration cycle.
3) to pay the utmost attention under various tdd frame structures be all or repeatedly the subframe of downstream arrangements for subframe skew.But also there are following several special circumstances:
I. avoid the collision with other channels and pilot tone, as subframe 0 (PBCH/PSS/SSH place subframe) and subframe 5 (PSS/SSH place subframe) as far as possible;
Ii. do not get rid of subframe 5 and/or subframe 0 allocating and measuring pilot tone;
Iii. except special time slot allocating and measuring pilot tone.
2, TDD base station is by frame structure and measurement pilot frequency subframe configuration information notification terminal.Measurement pilot frequency subframe configuration information can adopt high-level signaling or broadcast signaling, recessive or dominant Notification Method.
3, TDD base station is according to frame structure, and other information (as subframe bias internal information, measurement pilot frequency sequence information etc.) of measurement pilot frequency sub-frame configuration and measurement pilot frequency configuration, send measurement pilot frequency.But following measurement pilot frequency configuration subframe does not send measurement pilot frequency:
I. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
4, terminal, according to frame structure and the measurement pilot frequency subframe configuration information of TDD base station side notice, obtains measurement pilot frequency sub-frame configuration.And in the corresponding all or part of reception measurement pilot frequency of subframe.But following measurement pilot frequency configuration subframe receives measurement pilot frequency scarcely:
I. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
2 each configuration cycle of embodiment are offset corresponding to a plurality of subframes
1, a kind of measurement pilot frequency sub-frame configuration option, according to present frame structure (as shown in table 1) and performance requirements, is selected in TDD base station from measurement pilot frequency sub-frame configuration table (as shown in table 9-table 15).Frame structure and measurement pilot frequency sub-frame configuration table are all preserved in base station.
Table 9TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 0)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | reserved | reserved |
| 1 | reserved | reserved |
| 2 | reserved | reserved |
| 3 | 5 | {1，6} |
| 4 | 10 | {5} |
| 5 | 10 | {1} |
| 6 | 10 | {6} |
| 7 | 20 | {5} |
| 8 | 20 | {1} |
| 9 | 20 | {6} |
Table 10TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 1)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {1，4，9} |
| 1 | reserved | reserved |
| 2 | 5 | {4，9} |
| 3 | 5 | {1，6} |
| 4 | 10 | {4} |
| 5 | 10 | {9} |
| 6 | 10 | {5} |
| 7 | 20 | {4} |
| 8 | 20 | {9} |
| 9 | 20 | {5} |
Table 11TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 2)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {3，5，8}or{4，6，9} |
| 1 | 5 | {3，8} |
| 2 | 5 | {4，9} |
| 3 | 5 | {1，6} |
| 4 | 10 | {3} |
| 5 | 10 | {4} |
| 6 | 10 | {8} |
| 7 | 20 | {3} |
| 8 | 20 | {4} |
| 9 | 20 | {8} |
Table 12TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 3)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {5，7，9} |
| 1 | reserved | reserved |
| 2 | 5 | {6，9} |
| 3 | 5 | {1，6} |
| 4 | 10 | {6} |
| 5 | 10 | {7} |
| 6 | 10 | {8} |
| 7 | 20 | {6} |
| 8 | 20 | {7} |
| 9 | 20 | {8} |
Table 13TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 4)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {4，6，8} |
| 1 | reserved | reserved |
| 2 | 5 | {4，8} |
| 3 | 5 | {5，9} |
| 4 | 10 | {4} |
| 5 | 10 | {6} |
| 6 | 10 | {7} |
| 7 | 20 | {4} |
| 8 | 20 | {6} |
| 9 | 20 | {7} |
Table 14TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 5)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {3，5，7，9}or{4，6，8} |
| 1 | 5 | {3，7} |
| 2 | 5 | {4，8} |
| 3 | 5 | {5，9} |
| 4 | 10 | {3} |
| 5 | 10 | {4} |
| 6 | 10 | {6} |
| 7 | 20 | {3} |
| 8 | 20 | {4} |
| 9 | 20 | {6} |
Table 15TDD measurement pilot frequency sub-frame configuration (up-downlink configuration 6)
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {1，5，9}or{1，6，9} |
| 1 | reserved | reserved |
| 2 | 5 | {5，9} |
| 3 | 5 | {1，6} |
| 4 | 10 | {9} |
| 5 | 10 | {5} |
| 6 | 10 | {1} |
| 7 | 20 | {9} |
| 8 | 20 | {5} |
| 9 | 20 | {1} |
Table 9-table 15 is a kind of situation of measurement pilot frequency sub-frame configuration just, and real system may exist other situations, but has at least one identical feature with this form:
1) by configuration cycle and/or subframe skew, determine the subframe that sends measurement pilot frequency, the cycle that sends the subframe of measurement pilot frequency is the concept of a broad sense, is not limited to uniformly-spaced send, and also can send for unequal interval.For example, the 2ms cycle: have at least three subframes to send measurement pilot frequency in a radio frames; The 5ms cycle: have two subframes to send measurement pilot frequency in a radio frames; The 10ms cycle: only have a subframe to send measurement pilot frequency in a radio frames.The 20ms cycle: only have a subframe to send measurement pilot frequency in two radio frames.
2) configuration cycle and how to send measurement pilot frequency be not limited to above-mentioned 4 kinds of situations within configuration cycle.
3) to pay the utmost attention under various tdd frame structures be all or repeatedly the subframe of downstream arrangements for subframe skew.But also there are following several special circumstances:
I. avoid the collision with other channels and pilot tone, as subframe 0 (PBCH/PSS/SSH place subframe) and subframe 5 (PSS/SSH place subframe) as far as possible;
Ii. do not get rid of subframe 5 and/or subframe 0 allocating and measuring pilot tone;
Iii. do not get rid of special time slot allocating and measuring pilot tone;
Iv. under every kind of cycle, find out as far as possible 3 kinds of different subframe skews.
2, TDD base station is by frame structure and measurement pilot frequency subframe configuration information notification terminal.Measurement pilot frequency subframe configuration information can adopt high-level signaling or broadcast signaling, recessive or dominant Notification Method.
3, TDD base station is according to frame structure, and other information (as subframe bias internal information, measurement pilot frequency sequence information etc.) of measurement pilot frequency sub-frame configuration and measurement pilot frequency configuration, send measurement pilot frequency.But following measurement pilot frequency configuration subframe does not send measurement pilot frequency:
I. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
4, terminal, according to frame structure and the measurement pilot frequency subframe configuration information of TDD base station side notice, obtains measurement pilot frequency sub-frame configuration.And in the corresponding all or part of reception measurement pilot frequency of subframe.But following measurement pilot frequency configuration subframe receives measurement pilot frequency scarcely:
I. in special time slot, DwPTS inadequate resource cannot support measurement pilot frequency to send.
The measurement pilot frequency collocation method of FDD (frequency division multiplexing) system
1 each configuration cycle of embodiment is offset corresponding to a kind of subframe
1, a kind of measurement pilot frequency sub-frame configuration option, according to performance requirements, is selected in FDD base station from measurement pilot frequency sub-frame configuration table (shown in table 16).Measurement pilot frequency sub-frame configuration table is preserved in base station.
Table 16FDD measurement pilot frequency sub-frame configuration
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {1} |
| 1 | 5 | {1} |
| 2 | 10 | {1} |
| 3 | 20 | {1} |
Table 16 is a kind of situation of measurement pilot frequency sub-frame configuration just, and real system may exist other situations, but has at least one identical point with this form:
1) PBCH (Physical broadcast channel is avoided in subframe skew as far as possible, Physical Broadcast Channel)/SSH (secondary synchronization channel, the subframe at auxiliary synchronization channel)/PSH (primary synchronization channel, primary synchronization channel) place.
Situation about i. cannot avoid completely, preferentially avoids the subframe at PBCH place.
2) configuration cycle is not limited to above-mentioned 4 kinds of situations.
2, FDD base station is by measurement pilot frequency subframe configuration information notification terminal.Measurement pilot frequency subframe configuration information can adopt high-level signaling or broadcast signaling, recessive or dominant Notification Method.
3, FDD base station, according to other information (as subframe bias internal information, measurement pilot frequency sequence information etc.) of measurement pilot frequency sub-frame configuration and measurement pilot frequency configuration, sends measurement pilot frequency.
4, terminal, according to the measurement pilot frequency subframe configuration information of FDD base station side notice, obtains measurement pilot frequency sub-frame configuration, and in the corresponding all or part of reception measurement pilot frequency of subframe.
Embodiment corresponding a plurality of subframe skews of 2 each configuration cycle
1, a kind of measurement pilot frequency sub-frame configuration option, according to performance requirements, is selected in FDD base station from measurement pilot frequency sub-frame configuration table (shown in table 17).Measurement pilot frequency sub-frame configuration table is preserved in base station.
Table 17FDD measurement pilot frequency sub-frame configuration
| Sub-frame configuration | Configuration cycle | Subframe skew |
| 0 | 2 | {1} |
| 1 | 5 | {1} |
| 2 | 5 | {2} |
| 3 | 5 | {3} |
| 4 | 10 | {1} |
| 5 | 10 | {2} |
| 6 | 10 | {3} |
| 7 | 20 | {1} |
| 8 | 20 | {2} |
| 9 | 20 | {3} |
Table 17 is a kind of situation of measurement pilot frequency sub-frame configuration just, and real system may exist other situations, but has at least one identical point with this form:
1) subframe at PBCH/SSH/PSH place is avoided in subframe skew as far as possible.
Situation about i. cannot avoid completely, preferentially avoids the subframe at PBCH place.
2) configuration cycle is not limited to above-mentioned 4 kinds of situations.
2, FDD base station is by measurement pilot frequency subframe configuration information notification terminal.Measurement pilot frequency subframe configuration information can adopt high-level signaling or broadcast signaling, recessive or dominant Notification Method.
3, FDD base station, according to other information (as subframe bias internal information, measurement pilot frequency sequence information etc.) of measurement pilot frequency sub-frame configuration and measurement pilot frequency configuration, sends measurement pilot frequency.
Terminal, according to the measurement pilot frequency subframe configuration information of FDD base station side notice, obtains measurement pilot frequency sub-frame configuration, and in the corresponding all or part of reception measurement pilot frequency of subframe.
In sum, by above-mentioned at least one technical scheme of the present invention, by providing concrete scheme and the related signaling of measurement pilot frequency cycle configuration, design, really realized the measurement pilot frequency cycle configuration of TDD system.Meanwhile, these schemes take into full account the precision of measurement, have optimized systematic function.The present invention can realize LTE-A systematic survey pilot period and send, and has both guaranteed that the configuration of FDD and TDD systematic unity sent receiving course, has optimized respectively again the measurement pilot frequency allocative abilities of each system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (28)
1. a measurement pilot frequency sending method, is characterized in that, described method comprises:
A kind of measurement pilot frequency sub-frame configuration is selected in base station from pre-configured measurement pilot frequency sub-frame configuration table, and in descending sub frame, periodically sends measurement pilot frequency according to described measurement pilot frequency sub-frame configuration; And
Described base station is described measurement pilot frequency subframe configuration information notification terminal,
Wherein, in the situation that described measurement pilot frequency sending method is used for time division multiplex system, by the skew of described configuration cycle and/or described subframe, determine the subframe that sends measurement pilot frequency, the cycle of the subframe of described transmission measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle, and
Wherein, the described unequal interval cycle one of comprises at least:
When described configuration cycle is 2ms, in a radio frames, have at least three subframes to send measurement pilot frequency;
When described configuration cycle is 5ms, in a radio frames, there are two subframes to send measurement pilot frequency;
When described configuration cycle is 10ms, in a radio frames, only there is a subframe to send measurement pilot frequency;
When described configuration cycle is 20ms, in two radio frames, only there is a subframe to send measurement pilot frequency; And
When described configuration cycle is 30ms, in three radio frames, only there is a subframe to send measurement pilot frequency.
2. method according to claim 1, is characterized in that, it is one of following that described measurement pilot frequency sub-frame configuration at least comprises: configuration cycle, corresponding to one or more subframes skews of described configuration cycle.
3. method according to claim 1, is characterized in that, described measurement pilot frequency subframe configuration information is sequence number corresponding to described measurement pilot frequency sub-frame configuration.
4. method according to claim 1, is characterized in that:
The described uniformly-spaced cycle is: by the initial subframe number of described subframe skew indicating downlink measurement pilot frequency, uniformly-spaced send according to described configuration cycle; And
The described unequal interval cycle is: by sending the subframe numbers of downlink measurement pilot frequency in the one or more radio frames of described subframe skew indication, and according to this configuration, send in subsequent subframe.
5. method according to claim 1, is characterized in that, according to priority orders, the subframe of described transmission measurement pilot frequency is configured to: only for subframe, subframe 5, subframe 0, the special time slot of transmitting physical DSCH Downlink Shared Channel.
6. method according to claim 1, is characterized in that, the measurement pilot frequency configuration in described measurement pilot frequency sub-frame configuration table is corresponding or uncorrelated one by one with frame structure.
7. according to the method in any one of claims 1 to 3, it is characterized in that, in the situation that described measurement pilot frequency sending method is used for Frequency Division Multiplexing system, by described configuration cycle and/or the skew of described subframe, determine the subframe that sends measurement pilot frequency, the subframe of described transmission measurement pilot frequency does not comprise Physical Broadcast Channel place subframe, primary synchronization channel place subframe and auxiliary synchronization channel place subframe.
8. method according to claim 7, is characterized in that, described configuration cycle comprise following one of at least: 2ms, 5ms, 10ms, 20ms, 30ms.
9. a measurement pilot frequency method of reseptance, is characterized in that, described method comprises:
Terminal receives the measurement pilot frequency subframe configuration information that base station sends;
Described terminal is determined corresponding measurement pilot frequency sub-frame configuration according to described measurement pilot frequency subframe configuration information and pre-configured measurement pilot frequency sub-frame configuration table, and determines according to determined measurement pilot frequency sub-frame configuration the subframe that sends measurement pilot frequency; And
Described terminal receives described measurement pilot frequency in determined subframe,
Wherein, in the situation that described measurement pilot frequency sending method is used for time division multiplex system, by the skew of described configuration cycle and/or described subframe, determine the subframe that sends measurement pilot frequency, the cycle of the subframe of described transmission measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle, and
Wherein, the subframe of described transmission measurement pilot frequency comprise following one of at least: only for subframe, subframe 5, subframe 0, the special time slot of transmitting physical DSCH Downlink Shared Channel.
10. method according to claim 9, is characterized in that, it is one of following that described measurement pilot frequency sub-frame configuration at least comprises: configuration cycle, corresponding to one or more subframes skews of described configuration cycle.
11. methods according to claim 9, is characterized in that, described measurement pilot frequency subframe configuration information is sequence number corresponding to described measurement pilot frequency sub-frame configuration.
12. methods according to claim 9, is characterized in that:
The described uniformly-spaced cycle is: by the initial subframe number of described subframe skew indicating downlink measurement pilot frequency, uniformly-spaced send according to described configuration cycle; And
The described unequal interval cycle is: by sending the subframe numbers of downlink measurement pilot frequency in the one or more radio frames of described subframe skew indication, and according to this configuration, send in subsequent subframe.
13. methods according to claim 9, is characterized in that, the measurement pilot frequency configuration in described measurement pilot frequency sub-frame configuration table is corresponding or uncorrelated one by one with frame structure.
14. according to the method described in any one in claim 9 to 11, it is characterized in that, in the situation that described measurement pilot frequency sending method is used for Frequency Division Multiplexing system, by described configuration cycle and/or the skew of described subframe, determine the subframe that sends measurement pilot frequency, the subframe of described transmission measurement pilot frequency does not comprise Physical Broadcast Channel place subframe, primary synchronization channel place subframe and auxiliary synchronization channel place subframe.
15. 1 kinds of measurement pilot frequency dispensing devices, is characterized in that, described device comprises:
Measurement pilot frequency configuration module, for putting in advance the measurement pilot frequency sub-frame configuration table that comprises one or more measurement pilot frequency sub-frame configuration;
Measurement pilot frequency sending module is selected a kind of measurement pilot frequency sub-frame configuration, and in descending sub frame, is periodically sent measurement pilot frequency according to described measurement pilot frequency sub-frame configuration from described measurement pilot frequency sub-frame configuration table; And
Information sending module, for by described measurement pilot frequency subframe configuration information notification terminal,
Wherein, in the situation that described measurement pilot frequency dispensing device is used for time division multiplex system, by the skew of described configuration cycle and/or described subframe, determine the subframe that sends measurement pilot frequency, the cycle of the subframe of described transmission measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle, and
Wherein, the described unequal interval cycle comprise following one of at least:
When described configuration cycle is 2ms, in a radio frames, have at least three subframes to send measurement pilot frequency;
When described configuration cycle is 5ms, in a radio frames, there are two subframes to send measurement pilot frequency;
When described configuration cycle is 10ms, in a radio frames, only there is a subframe to send measurement pilot frequency;
When described configuration cycle is 20ms, in two radio frames, only there is a subframe to send measurement pilot frequency; And
When described configuration cycle is 30ms, in three radio frames, only there is a subframe to send measurement pilot frequency.
16. devices according to claim 15, is characterized in that, it is one of following that described measurement pilot frequency sub-frame configuration at least comprises: configuration cycle, corresponding to one or more subframes skews of described configuration cycle.
17. devices according to claim 16, is characterized in that, described measurement pilot frequency subframe configuration information is sequence number corresponding to described measurement pilot frequency sub-frame configuration.
18. devices according to claim 15, is characterized in that:
The described uniformly-spaced cycle is: by the initial subframe number of described subframe skew indicating downlink measurement pilot frequency, uniformly-spaced send according to described configuration cycle; And
The described unequal interval cycle is: by the subframe numbers that sends downlink measurement pilot frequency in described subframe skew indication configuration cycle, periodically send according to configuration cycle.
19. devices according to claim 18, is characterized in that, according to priority orders, the subframe of described transmission measurement pilot frequency is configured to: only for transmitting subframe, subframe 5, subframe 0, the special time slot of PDSCH.
20. devices according to claim 18, is characterized in that, the measurement pilot frequency configuration in described measurement pilot frequency sub-frame configuration table is corresponding or uncorrelated one by one with frame structure.
21. according to claim 15 to the device described in any one in 17, it is characterized in that, in the situation that described measurement pilot frequency dispensing device is used for Frequency Division Multiplexing system, by described configuration cycle and/or the skew of described subframe, determine the subframe that sends measurement pilot frequency, the subframe of described transmission measurement pilot frequency does not comprise Physical Broadcast Channel place subframe, auxiliary synchronization channel place subframe and primary synchronization channel place subframe.
22. devices according to claim 21, is characterized in that, described configuration cycle comprise following one of at least: 2ms, 5ms, 10ms, 20ms, 30ms.
23. 1 kinds of measurement pilot frequency receiving systems, is characterized in that, described device comprises:
Information receiving module, the measurement pilot frequency subframe configuration information sending for receiving base station;
Subframe determination module, for determining measurement pilot frequency sub-frame configuration according to described measurement pilot frequency subframe configuration information and pre-configured measurement pilot frequency sub-frame configuration table, and determines the subframe that sends measurement pilot frequency according to determined measurement pilot frequency sub-frame configuration; And
Receiver module, for receive described measurement pilot frequency in determined subframe,
Wherein, in the situation that described measurement pilot frequency sending method is used for time division multiplex system, by the skew of described configuration cycle and/or described subframe, determine the subframe that sends measurement pilot frequency, the cycle of the subframe of described transmission measurement pilot frequency is uniformly-spaced cycle and/or unequal interval cycle, and
Wherein, the subframe of described transmission measurement pilot frequency comprise following one of at least: only for subframe, subframe 5, subframe 0, the special time slot of transmitting physical DSCH Downlink Shared Channel.
24. devices according to claim 23, is characterized in that, it is one of following that described measurement pilot frequency sub-frame configuration at least comprises: configuration cycle, corresponding to one or more subframes skews of described configuration cycle.
25. devices according to claim 23, is characterized in that, described measurement pilot frequency subframe configuration information is sequence number corresponding to described measurement pilot frequency sub-frame configuration.
26. devices according to claim 23, is characterized in that:
The described uniformly-spaced cycle is: by the initial subframe number of described subframe skew indicating downlink measurement pilot frequency, uniformly-spaced send according to described configuration cycle; And
The described unequal interval cycle is: by sending the subframe numbers of downlink measurement pilot frequency in the one or more radio frames of described subframe skew indication, and according to this configuration, send in subsequent subframe.
27. devices according to claim 23, is characterized in that, the measurement pilot frequency configuration in described measurement pilot frequency sub-frame configuration table is corresponding or uncorrelated one by one with frame structure.
28. according to the device described in any one in claim 23 to 25, it is characterized in that, in the situation that described measurement pilot frequency sending method is used for Frequency Division Multiplexing system, by described configuration cycle and/or the skew of described subframe, determine the subframe that sends measurement pilot frequency, the subframe of described transmission measurement pilot frequency does not comprise Physical Broadcast Channel place subframe, primary synchronization channel place subframe and auxiliary synchronization channel place subframe.
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