CN110446218B - Method and device in narrow-band communication - Google Patents
Method and device in narrow-band communication Download PDFInfo
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- CN110446218B CN110446218B CN201910689383.0A CN201910689383A CN110446218B CN 110446218 B CN110446218 B CN 110446218B CN 201910689383 A CN201910689383 A CN 201910689383A CN 110446218 B CN110446218 B CN 110446218B
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- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
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Abstract
The invention discloses a method and a device in narrow-band communication. As an embodiment, the UE first receives K wireless signals on K target time-frequency resources, and then determines K transmission qualities according to the K wireless signals. The K target time-frequency resources are respectively located in K narrow frequency bands on a frequency domain, and the bandwidth of one narrow frequency band is the bandwidth of one PRB. The invention shortens the time required for RRM measurement, especially for multiple narrow bands. In addition, the invention eliminates the same frequency interference between cells as much as possible, and improves the precision of RRM measurement.
Description
The present application is a divisional application of the following original applications:
application date of the original application: 2015, 10 months and 30 days
- -application number of the original application: 201510725135.9
The invention of the original application is named: method and device in narrow-band communication
Technical Field
The present invention relates to transmission schemes in wireless communication systems, and more particularly, to methods and apparatus for cellular communications compatible with narrowband transmissions.
Background
NB-IOT (narrow band Internet of Things) was established at #69 times the full meeting at 3GPP (3 rd Generation Partner Project) RAN (Radio Access Network) # 69. NB-IOT supports 3 different modes of operation (RP-151621):
1. stand-alone (Stand-alone) operation, deployed on the spectrum used by GERAN systems.
2. Guard band operation, deployment on unused resource blocks in guard band of LTE carrier
3. Operating in-band, deployment on resource blocks on LTE carriers
Further, in NB-IOT, a UE (User Equipment) supports a Radio Frequency (RF) bandwidth of 180kHz in both uplink and downlink, that is, a Physical Resource Block (PRB).
In a conventional cellular network system, RRM (Radio Resource Management) measurements performed on the UE side generally include RSRP (Reference Signal Received Power) measurements and RSRQ (Reference Signal Received Power) measurements. Taking LTE (Long Term Evolution ) as an example, RRM measurement may be based on CRS (Cell specific Reference Signal), CSI (Channel Status Information), channel state Information) -RS (Reference Signal), MBSFN RS or direct link (Sidelink) RS.
Disclosure of Invention
The inventors have found through research that, according to the RS utilized by the existing RRM measurement, in the narrowband communication, the RS utilized by the RRM measurement may be very sparse, and due to the narrow bandwidth, the UE may monitor for a relatively long time to obtain a reliable RRM measurement result — that is, the delay caused by the RRM measurement is greatly increased.
Further, the inventors found through research that, since the RF (Radio Frequency) capability of the UE in narrowband communication generally supports only one narrowband bandwidth, if the UE needs to perform RRM measurement on multiple narrowband, the required time increases linearly with the increase of the number of narrowband. Thus wasting UE power and destroying the real-time nature of RRM measurements.
The present invention provides a solution to the above problems. It should be noted that, in case of no conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.
The invention discloses a method in UE supporting narrow-band communication, which comprises the following steps:
-step a. Receiving K radio signals on K target time frequency resources, respectively
-step b. Determining K transmission qualities from the K radio signals, respectively.
The K target time-frequency resources are respectively located in K narrow frequency bands on a frequency domain, and the bandwidth of one narrow frequency band is the bandwidth of one PRB. The target time-frequency resource is used for transmitting specific information, and the specific information comprises at least one of { narrowband synchronization sequence, narrowband broadcast information }. The UE can only receive wireless signals over one narrow frequency band at a given time.
The essence of the above method is that RRM measurements are made using radio signals other than the conventional RS. Compared with the traditional RS, the specific information has the following characteristics:
the distribution within a sub-frame (1 millisecond) is generally more dense
The distribution between subframes is typically more sparse.
The two characteristics provide possibility for RRM measurement in TDM (Time Division multiplexing).
In conventional broadband communication, the synchronization sequence and the broadcast information usually occupy only a part of the whole system bandwidth, and thus cannot provide a reliable reference for RRM measurement. Whereas in narrow band communications the above mentioned drawbacks are no longer present.
As an embodiment, the specific information is transmitted periodically.
As an embodiment, the specific information is transmitted without physical layer control signaling scheduling.
In one embodiment, the narrowband synchronization sequence comprises at least one of a { Zadoff-Chu sequence, a pseudo-random sequence }.
For one embodiment, the narrowband broadcast information includes at least one of { time window index, cell identification, operator identification, system information }.
As an embodiment, the logical CHannel carrying the narrowband Broadcast information is a BCCH (Broadcast Control CHannel).
As an embodiment, the bearer transport CHannel of the narrowband Broadcast information includes at least one of a Physical Broadcast CHannel (PBCH) and a Downlink Shared CHannel (DL-SCH).
As an example, K is 1.
As an embodiment, the specific information further comprises a cell common reference signal.
Specifically, according to one aspect of the present invention, the method further comprises the following steps:
-step c. Sending uplink signaling indicating at least one of the K transmission qualities.
As an embodiment, the uplink signaling is upper layer signaling.
As an embodiment, the uplink signaling is physical layer signaling.
In particular, according to one aspect of the invention, the transmission quality is related to a first parameter, the unit of which is a watt. The first parameter is a linear average of received power in REs included in a target time-frequency resource corresponding to the transmission quality.
In particular, according to one aspect of the invention, the transmission quality is related to a first parameter, the unit of which is a watt. The first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, and the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average after the conjugates of the corresponding normalized transmitted signals, respectively.
The advantage of the above aspects is that co-channel interference between cells can be eliminated as much as possible, so that compared with the conventional RSRP, the power of the target signal is more accurately reflected, and the precision of RRM measurement is improved. The conventional RSRP cannot adopt this scheme because the RS is too sparse in the subframe, and the radio channel parameters corresponding to the multiple REs occupied by the RS change.
As an embodiment, the plurality of REs is self-determined by the UE.
As an embodiment, the plurality of REs are located in one subframe.
As one embodiment, the radio channel characteristics maintain correlation over the plurality of REs.
As an embodiment, the transmission quality comprises a first parameter.
Specifically, according to an aspect of the present invention, K is greater than 1, and the K target time frequency resources do not overlap with each other in time.
In particular, according to one aspect of the invention, the transmission quality is related to a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the third parameter having units of watts. The third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
As an embodiment, the transmission quality comprises a second parameter.
Specifically, according to an aspect of the present invention, the step a further includes the steps of:
-step A0. receiving a downlink signaling, said downlink signaling configuring K target time windows, said K target time windows corresponding to said K transmission qualities, respectively.
The above aspects ensure that the UE can perform RRM measurement on a plurality of narrow bands in a TDM manner, and greatly reduce the time required for measurement.
As an embodiment, the target time window comprises a positive integer number of LTE subframes.
The invention discloses a method in a base station supporting narrow-band communication, which comprises the following steps:
step a. Sending K specific information on K target time frequency resources, respectively. The K specific information can be used by the UE to determine K transmission qualities.
The K target time-frequency resources are respectively located in K narrow frequency bands on a frequency domain, and the bandwidth of one narrow frequency band is the bandwidth of one PRB. The specific information includes at least one of { narrowband synchronization sequence, narrowband broadcast information }.
Specifically, according to one aspect of the present invention, the method further comprises the following steps:
-step c. Receiving uplink signaling indicating at least one of the K transmission qualities.
In particular, according to one aspect of the invention, the transmission quality is related to a first parameter, the unit of which is a watt. The first parameter is a linear average of received power in REs included in a target time-frequency resource corresponding to the transmission quality.
In particular, according to one aspect of the invention, the transmission quality is related to a first parameter, the unit of which is a watt. The first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, and the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average after the conjugates of the corresponding normalized transmitted signals, respectively.
Specifically, according to an aspect of the present invention, K is greater than 1, and the K target time-frequency resources do not overlap with each other in time.
In particular, according to one aspect of the invention, the transmission quality is related to a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the third parameter having units of watts. The third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
Specifically, according to an aspect of the present invention, the step a further includes the steps of:
-step A0. sending a downlink signaling, said downlink signaling configuring K target time windows, said K target time windows corresponding to said K transmission qualities, respectively.
The invention discloses a user equipment supporting narrow-band communication, which comprises the following modules:
a first module: for receiving K wireless signals on K target time frequency resources respectively
A second module: for determining K transmission qualities from the K radio signals, respectively.
The K target time-frequency resources are respectively located in K narrow frequency bands on a frequency domain, and the bandwidth of one narrow frequency band is the bandwidth of one PRB. The target time-frequency resource is used for transmitting specific information, and the specific information comprises at least one of { narrowband synchronization sequence, narrowband broadcast information }. The UE can only receive wireless signals over one narrow frequency band at a given time.
As an embodiment, the user equipment further includes:
a third module: and the uplink signaling is used for sending uplink signaling, and the uplink signaling indicates at least one transmission quality in the K transmission qualities.
As an embodiment, the above user equipment is characterized in that the transmission quality includes at least one of { first parameter, second parameter }, and a unit of the first parameter is a watt. The first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, wherein the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average of the conjugates of the corresponding normalized transmitted signals. The second parameter is the quotient of the first parameter divided by the third parameter, the unit of the third parameter being watts. The third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the respective narrow frequency bands in the frequency domain, the plurality of target OFDM symbols comprising in the time domain at least one of { an OFDM symbol occupied by a target time-frequency resource corresponding to the transmission quality, an OFDM symbol in a respective target time window }, the target time-frequency resource corresponding to the transmission quality being located in the time domain outside the respective target time window.
The invention discloses a base station device supporting narrow-band communication, which comprises the following modules:
a first module: and the method is used for respectively sending K pieces of specific information on K pieces of target time-frequency resources. The K specific information can be used by the UE to determine K transmission qualities.
The K target time-frequency resources are respectively located in K narrow frequency bands on a frequency domain, and the bandwidth of one narrow frequency band is the bandwidth of one PRB. The specific information includes at least one of { narrowband synchronization sequence, narrowband broadcast information }.
As an embodiment, the base station apparatus described above is characterized in that the transmission quality includes at least one of { first parameter, second parameter }, and a unit of the first parameter is a watt. The first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, wherein the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average of the conjugates of the corresponding normalized transmitted signals. The transmission quality is related to a second parameter, the second parameter being the quotient of the first parameter divided by a third parameter, the third parameter having a unit of watts. The third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
As an embodiment, the base station apparatus further includes:
a second module: and the uplink signaling is used for receiving uplink signaling, and the uplink signaling indicates at least one transmission quality in the K transmission qualities.
Compared with the prior art, the invention has the following technical advantages:
shortening the time required for RRM measurements, in particular for multiple narrow bands
Saving energy overhead for the UE
Eliminating co-channel interference between cells as much as possible, improving the precision of RRM measurement.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
figure 1 shows a flow diagram of RRM measurements according to one embodiment of the present invention;
FIG. 2 shows a schematic diagram of broadcast information within a narrow band according to an embodiment of the invention;
FIG. 3 shows a diagram illustrating a synchronization sequence within a narrow band, according to an embodiment of the invention;
FIG. 4 shows a schematic diagram of specific information within 2 narrow bands according to one embodiment of the invention;
FIG. 5 shows a schematic diagram of a target time window according to an embodiment of the invention;
fig. 6 shows a block diagram of a processing device in a UE according to an embodiment of the invention;
fig. 7 shows a block diagram of a processing means in a base station according to an embodiment of the invention;
Detailed Description
The technical solutions of the present invention will be further described in detail with reference to the accompanying drawings, and it should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.
Example 1
For theBase station N1In step S101, K pieces of specific information are respectively transmitted on the K pieces of target time-frequency resources. In step S103, uplink signaling is received.
ForUE U2In step S201, K wireless signals are received on K target time-frequency resources, in step S202, K transmission qualities are determined according to the K wireless signals, and in step S203, an uplink signaling is sent, where the uplink signaling indicates at least one of the K transmission qualities.
In embodiment 1, the K target time-frequency resources are located in K narrow frequency bands in the frequency domain, respectively, and the bandwidth of one narrow frequency band is 180kHz. The target time-frequency resource is used for transmitting specific information, and the specific information comprises at least one of { narrowband synchronization sequence, narrowband broadcast information }. The UE may only be able to receive wireless signals over a narrow frequency band at a given time.
As sub embodiment 1 of embodiment 1, the transmission quality includes a first parameter, and a unit of the first parameter is a watt. The first parameter is a linear average of received power in REs included in a target time-frequency resource corresponding to the transmission quality.
As sub-embodiment 2 of embodiment 1, the transmission quality includes a first parameter, the unit of the first parameter being watts. The first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, where the useful signal is obtained by multiplying the received signals on multiple REs by an arithmetic average after the conjugates of the corresponding normalized transmitted signals, that is, the first parameter is:
wherein, REs included in the target time-frequency resource in the observation window are divided into J RE groups, and Q REs are included in every RE group,
is a received signal on the qth RE in the group of j REs, <' >>
Is a normalized (i.e., power of one) transmitted signal on the qth RE in the j RE group. (X) * Denotes the conjugation of X, | X 2 Represents the square of the modulus of X. The radio channels experienced by the received signals on the REs within one RE group have strong correlation.
As sub-embodiment 3 of embodiment 1, the transmission quality includes a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the unit of the third parameter being watts. The third parameter is a linear average of the received power over a plurality of target OFDM symbols, the target OFDM symbols occupying the full bandwidth of the respective narrow frequency band in the frequency domain, the plurality of target OFDM symbols comprising OFDM symbols in respective target time windows in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the respective target time windows in the time domain.
As sub-embodiment 4 of embodiment 1, the specific information further includes a cell common reference signal whose pattern within a PRB pair is a pattern of a CRS within a PRB pair.
Example 2
In embodiment 2, the subframe occupied by the narrowband broadcast information occurs periodically, and the broadcast information occupies the second slot in the subframe.
As sub-embodiment 1 of embodiment 2, as an embodiment, the logical channel carrying the narrowband broadcast information is BCCH, and the transport channel carrying the narrowband broadcast information includes at least one of { PBCH, DL-SCH }.
As a sub-embodiment 2 of the embodiment 2, the narrowband broadcast Information includes at least one of { System frame number, system Information change indication, operation mode indication, SIB (System Information Block) 1 scheduling Information, CRS configuration Information }.
Example 3
In embodiment 3, the synchronization sequence in the present invention includes { the first sequence, the second sequence }, and the synchronization sequence in the present invention is transmitted periodically. The first sequence occupies a first slot of the subframe and the second sequence occupies a second slot of the subframe.
As sub-embodiment 1 of embodiment 3, the first sequence is a pseudo-random sequence and the second sequence is a Zadoff-Chu sequence.
Example 4
In embodiment 4, the UE first receives K wireless signals on K target time-frequency resources, and then determines K transmission qualities according to the K wireless signals, where K is 2, the K target time-frequency resources are located in a narrowband # 1 and a narrowband # 2 on a frequency domain, respectively, and a bandwidth of one narrowband is 180kHz. The target time-frequency resource is used for transmitting specific information, and the specific information comprises { narrowband synchronization sequence, narrowband broadcast information }. The UE can only receive wireless signals over one narrow frequency band at a given time. The K target time frequency resources are not overlapped in time.
On each narrow band, the subframes occupied by the narrow band synchronization sequence and the subframes occupied by the narrow band broadcast information are periodically present, and the period is p subframes. And p is a positive integer.
Example 5
Example 5 illustrates a schematic diagram of a target time window, as shown in fig. 5. In fig. 5, squares filled with oblique lines identify target time-frequency resources occupied by specific information, and squares with thick line frames identify target time windows.
The UE determines a first parameter according to the received signal on the target time frequency resource occupied by the specific information, and determines a third parameter according to the received signal in the target time window, wherein the third parameter is a linear average value of the received power on a plurality of target OFDM symbols. The target time-frequency resource and the target time window are non-overlapping in time with each other.
As sub-embodiment 1 of embodiment 5, the base station sends a downlink signaling to indicate the target time window.
As sub-embodiment 2 of embodiment 5, the plurality of target OFDM symbols includes all OFDM symbols in the target time window, and the third parameter is:
wherein r is l m And receiving signals on REs corresponding to the mth subcarrier of the first OFDM symbol of the UE in the target time window. The index values of the OFDM symbols in the target time window are: 1,2,3, …, L; the index values of the subcarriers in the target time window are: 1,2,3, …, M.
Example 6
The first module 201 is configured to receive K wireless signals on K target time-frequency resources, respectively; the second module 202 is configured to determine K transmission qualities according to the K wireless signals, respectively; the third module 203 is configured to send an uplink signaling, where the uplink signaling indicates at least one transmission quality of the K transmission qualities.
In embodiment 6, the K target time-frequency resources are located in K narrow frequency bands in the frequency domain, respectively, and the bandwidth of one narrow frequency band is the bandwidth of one PRB. The target time-frequency resource is used for transmitting specific information, and the specific information comprises at least one of { narrowband synchronization sequence, narrowband broadcast information }. The UE can only receive wireless signals over one narrow frequency band at a given time. The uplink signaling is higher layer signaling. The transmission quality includes { a first parameter, a second parameter }, and a unit of the first parameter is a watt. The first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, where the useful signal is obtained by multiplying the received signals on the multiple REs by an arithmetic average of the conjugates of the corresponding normalized transmitted signals, respectively. The second parameter is the quotient of the first parameter divided by the third parameter, the third parameter having units of watts. The third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the respective narrow frequency bands in the frequency domain, the plurality of target OFDM symbols comprising in the time domain at least one of { an OFDM symbol occupied by a target time-frequency resource corresponding to the transmission quality, an OFDM symbol in a respective target time window }, the target time-frequency resource corresponding to the transmission quality being located in the time domain outside the respective target time window.
As sub-embodiment 1 of embodiment 6, the first module is further configured to receive a downlink signaling, where the downlink signaling configures K target time windows, and the K target time windows respectively correspond to the K transmission qualities. The downlink signaling is higher layer signaling.
As sub-embodiment 2 of embodiment 6, the second module is further configured to select a narrowband corresponding to a best transmission quality among the K transmission qualities as a serving cell.
Example 7
The first module 301 is configured to send K pieces of specific information on K target time-frequency resources, respectively, where the K pieces of specific information can be used by the UE to determine K pieces of transmission quality; a second module 302 is configured to receive an uplink signaling, where the uplink signaling indicates at least one transmission quality of the K transmission qualities.
In embodiment 7, the K target time-frequency resources are located in K narrow frequency bands in the frequency domain, and a bandwidth of one narrow frequency band is a bandwidth of one PRB. The specific information includes at least one of { narrowband synchronization sequence, narrowband broadcast information }. The transmission quality includes { a first parameter, a second parameter }, and a unit of the first parameter is a watt. The first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, where the useful signal is obtained by multiplying the received signals on the multiple REs by an arithmetic average of the conjugates of the corresponding normalized transmitted signals, respectively. The transmission quality is related to a second parameter, the second parameter being the quotient of the first parameter divided by a third parameter, the third parameter having a unit of watts. The third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
As sub-embodiment 1 of embodiment 7, the uplink signaling is physical layer signaling.
As sub-embodiment 2 of embodiment 7, the first module 301 is further configured to send a downlink signaling, where the downlink signaling configures K target time windows, and the K target time windows correspond to the K transmission qualities, respectively. The downlink signaling is a higher layer signaling.
As sub-embodiment 3 of embodiment 7, the uplink signaling indicates a best transmission quality among the K transmission qualities, and the uplink signaling further indicates a narrowband corresponding to the best transmission quality.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE, the common UE and the common terminal in the invention include but are not limited to wireless communication devices such as mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, wireless sensors, network cards and the like. The narrowband terminal in the invention includes but is not limited to wireless Communication devices such as an internet of things terminal, an RFID terminal, an NB-IOT terminal, a Machine Type Communication (MTC) terminal, an enhanced MTC terminal, a data card, a network card, a vehicle-mounted Communication device, a low-cost mobile phone, and a low-cost tablet computer. The base station in the present invention includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (20)
1. A method in a UE supporting narrowband communication, comprising:
-a step a. Receiving a radio signal on a target time-frequency resource;
-step b. Determining a transmission quality from said one radio signal;
the target time frequency resource is located in a narrow frequency band on a frequency domain, and the bandwidth of the narrow frequency band is the bandwidth of one PRB; the target time-frequency resource is used for transmitting specific information, and the specific information comprises a narrow-band synchronization sequence and narrow-band broadcast information; the UE may only be able to receive wireless signals on one narrow frequency band at a given time; the transmission quality is related to a first parameter, the unit of the first parameter being watts; the first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, wherein the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average after the conjugates of the corresponding normalized transmitted signals respectively; the narrowband synchronization sequence comprises at least one of a { Zadoff-Chu sequence, a pseudo-random sequence }; the load-bearing logical channel of the narrowband broadcast information is BCCH.
2. The method of claim 1, further comprising the steps of:
-step c. Sending uplink signalling, said uplink signalling indicating said one transmission quality.
3. The method of claim 1, wherein the specific information further comprises a cell common reference signal.
4. The method of claim 1, wherein the transmission quality is related to a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the third parameter having units of watts; the third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
5. The method of claim 4, wherein step A further comprises the steps of:
-step A0. receiving a downlink signaling, said downlink signaling configuring one target time window, said one target time window corresponding to said one transmission quality.
6. A method in a base station supporting narrowband communication, comprising the steps of:
-step a. Sending a specific message on a target time frequency resource; the one specific information can be used by the UE to determine a transmission quality;
the target time frequency resource is located in a narrow frequency band on a frequency domain, and the bandwidth of the narrow frequency band is the bandwidth of one PRB; the specific information comprises a narrowband synchronization sequence and narrowband broadcast information; the transmission quality is related to a first parameter, the unit of the first parameter being watts; the first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, wherein the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average after the conjugates of the corresponding normalized transmitted signals respectively; the narrowband synchronization sequence comprises at least one of a { Zadoff-Chu sequence, a pseudorandom sequence }; the load-bearing logical channel of the narrowband broadcast information is BCCH.
7. The method of claim 6, further comprising the steps of:
-step c. Receiving uplink signalling, said uplink signalling indicating said one transmission quality.
8. The method of claim 6, wherein the specific information further comprises a cell common reference signal.
9. The method of claim 6, wherein the transmission quality is related to a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the third parameter having units of watts; the third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
10. The method of claim 9, wherein step a further comprises the steps of:
-step A0. sending a downlink signaling, said downlink signaling configuring one target time window, said one target time window corresponding to said one transmission quality respectively.
11. A user equipment supporting narrowband communication, comprising:
a first module: for receiving a radio signal on a target time-frequency resource
A second module: for determining a transmission quality from said one radio signal;
the target time-frequency resource is located in a narrow frequency band on a frequency domain, and the bandwidth of the narrow frequency band is the bandwidth of one PRB; the target time-frequency resource is used for transmitting specific information, and the specific information comprises a narrow-band synchronization sequence and narrow-band broadcast information; a UE can only receive wireless signals on one narrow frequency band at a given time; the transmission quality is related to a first parameter, the unit of the first parameter being watts; the first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, wherein the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average after the conjugates of the corresponding normalized transmitted signals respectively; the narrowband synchronization sequence comprises at least one of a { Zadoff-Chu sequence, a pseudo-random sequence }; the load-bearing logical channel of the narrowband broadcast information is BCCH.
12. The user equipment of claim 11, comprising:
a third module: and the uplink signaling is used for sending the uplink signaling, and the uplink signaling indicates the transmission quality.
13. The UE of claim 11, wherein the specific information further comprises a cell common reference signal.
14. The UE of claim 11, wherein the transmission quality is related to a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the third parameter having units of watts; the third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
15. The UE of claim 14, wherein the first module receives downlink signaling, and the downlink signaling configures a target time window, and the target time window corresponds to the one transmission quality.
16. A base station device supporting narrowband communication, comprising:
a first module: the system comprises a receiver and a transmitter, wherein the receiver is used for receiving a specific message on a target time-frequency resource; the one specific information can be used by the UE to determine a transmission quality;
the target time-frequency resource is located in a narrow frequency band on a frequency domain, and the bandwidth of the narrow frequency band is the bandwidth of one PRB; the specific information comprises a narrowband synchronization sequence and narrowband broadcast information; the transmission quality is related to a first parameter, the unit of the first parameter being watts; the first parameter is a linear average value of the received power in the RE included in the target time-frequency resource corresponding to the transmission quality; or the first parameter is a linear average of the received power of the useful signal in the target time-frequency resource corresponding to the transmission quality, wherein the useful signal is obtained by multiplying the received signals on the multiple REs by the arithmetic average after the conjugates of the corresponding normalized transmitted signals respectively; the narrowband synchronization sequence comprises at least one of a { Zadoff-Chu sequence, a pseudo-random sequence }; the load-bearing logical channel of the narrowband broadcast information is BCCH.
17. The base station apparatus according to claim 16, characterized by comprising:
a second module: for receiving an uplink signaling indicating the one transmission quality.
18. The base station apparatus of claim 16, wherein the specific information further comprises a cell common reference signal.
19. The base station apparatus according to claim 16, wherein the transmission quality is related to a second parameter, the second parameter being a quotient of the first parameter divided by a third parameter, the third parameter having a unit of watt; the third parameter is a linear average of received power over a plurality of target OFDM symbols, the target OFDM symbols occupying all bandwidths of the corresponding narrow frequency bands in the frequency domain, the plurality of target OFDM symbols including at least one of { OFDM symbols occupied by target time-frequency resources corresponding to the transmission quality, OFDM symbols in corresponding target time windows } in the time domain, the target time-frequency resources corresponding to the transmission quality being located outside the corresponding target time windows in the time domain.
20. The base station device of claim 19, wherein the first module sends a downlink signaling, and the downlink signaling configures a target time window, and the target time window corresponds to the one transmission quality.
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| CN110086582A (en) * | 2018-01-26 | 2019-08-02 | 中兴通讯股份有限公司 | A kind of channel measuring method and system, the first communication node and the second communication node |
| CN110798891B (en) * | 2018-08-03 | 2023-07-14 | 大唐移动通信设备有限公司 | Uplink transmission configuration method, device and equipment |
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| CN101478340B (en) * | 2009-01-21 | 2014-08-20 | 中兴通讯股份有限公司 | Method for sending measurement reference signal in uplink pilot timeslot of time division duplexing system |
| JP5348013B2 (en) * | 2009-05-26 | 2013-11-20 | ソニー株式会社 | Wireless communication apparatus, estimation server, wireless communication method, and estimation method |
| WO2013058564A1 (en) * | 2011-10-19 | 2013-04-25 | 엘지전자 주식회사 | Method for allowing mtc terminal to transmit and receive signal in wireless communication system |
| CN103096379B (en) * | 2011-11-07 | 2015-07-08 | 华为技术有限公司 | Control information transmission method |
| US10791542B2 (en) * | 2012-01-27 | 2020-09-29 | Qualcomm Incorporated | Regional and narrow band common reference signal (CRS) for user equipment (UE) relays |
| US10972920B2 (en) * | 2012-01-30 | 2021-04-06 | Qualcomm Incorporated | Flexible radio resource management (RRM) measurements for wireless networks |
| US9843954B2 (en) * | 2012-03-05 | 2017-12-12 | Lg Electronics Inc. | Method and apparatus for measuring in a wireless communication system |
| US9143984B2 (en) * | 2012-04-13 | 2015-09-22 | Intel Corporation | Mapping of enhanced physical downlink control channels in a wireless communication network |
| CN103379552B (en) * | 2012-04-24 | 2016-10-05 | 华为技术有限公司 | A kind of method and device supporting narrow band communication in broadband system |
| CN103428748B (en) * | 2012-05-17 | 2017-06-13 | 华为技术有限公司 | A kind of band measurement method, equipment and system |
| CN103581991B (en) * | 2012-08-09 | 2019-04-30 | 中兴通讯股份有限公司 | The indicating means and device of measurement parameter |
| JP6284951B2 (en) * | 2013-01-09 | 2018-02-28 | エルジー エレクトロニクス インコーポレイティド | Signal receiving method and user equipment, signal transmitting method and base station |
| EP2995054B1 (en) * | 2013-05-10 | 2017-03-22 | Telefonaktiebolaget LM Ericsson (publ) | Synchronization sequences and carrier type detection |
| CN104753560B (en) * | 2013-12-26 | 2018-01-05 | 联芯科技有限公司 | A kind of anti-arrowband interference method, eNodeB and communication system |
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| CN106658717B (en) | 2019-09-10 |
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