CN102378270B - For determining the method for reference signal pattern - Google Patents
For determining the method for reference signal pattern Download PDFInfo
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- CN102378270B CN102378270B CN201010254853.XA CN201010254853A CN102378270B CN 102378270 B CN102378270 B CN 102378270B CN 201010254853 A CN201010254853 A CN 201010254853A CN 102378270 B CN102378270 B CN 102378270B
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- pattern
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- reference signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
In order to the method for the reference signal RS pattern that provides a kind of semi-static determination sector used, the invention provides the method for determining reference signal pattern.Does base station provide the mark (Cell of this sector to the subscriber equipment in administrative sector? ID) and one pattern parameter (V), subscriber equipment determines according to the mark of pattern parameter and this sector the RS pattern that this sector is used.Because the mark of sector is constant, and pattern parameter can be set neatly by base station, therefore meets the semi-static requirement in current 3GPP draft.Preferably, pattern parameter is contained in the bit of Physical Broadcast Channel, and the pattern of RS determined by subscriber equipment before demodulation PDCCH and PDSCH, saved time and power.Exist in polytype pattern situation, the present invention uses blind Detecting mode to select the pattern of actual use.Base station also provides system frame number (SFN) to subscriber equipment, to determine the sequential parameter of RS together with the mark of this sector.
Description
Technical field
The present invention relates to for wireless communication technology, particularly relate to the reference signal in radio communication.
Background technology
Reference signal (ReferenceSignal, be called for short RS) have in wireless communication technology and apply very widely, such as, base station sends reference signal on certain communication resource element, subscriber equipment receives the reference signal that base station sends on identical communication resource element, thus measures the various messaging parameter such as down channel quality, downlink channel condition of base station to subscriber equipment according to received reference signal.
The reference signal sent in each sector and community in order to avoid base station interferes with each other, and reference signal generally sends according to a certain in multiple pattern, and base station is that non-interfering, orthogonal pattern is selected in each sector and community.Such as, for the reference signal for measuring downlink channel condition instruction (CSI), 3GPPRAN1#61 decides through consultation for common Cyclic Prefix (CP) as TDD defines the special pattern of three kinds of 8 CSI-RS ports, for TDD/FDD defines the special pattern of five kinds of 8 CSI-RS ports.The pattern that this sector of subscriber equipment in the sector how signals base is administrative uses becomes a technical problem.Have two kinds of possible modes to address this problem, one be explicitly by upper-layer protocol signaling, such as RRC signaled; Another kind is the mode of implicit signaling, a certain or certain some system parameters in the mark of used pattern and this sector is bundled.
For the mode of upper-layer protocol signaled, it can provide larger flexibility ratio.But, in order to avoid the interference between sector, realize the whole network and coordinate, need to carry out reshuffling of the whole network.Moreover, need to go through access synchronizing channel, access Physical Broadcast Channel (PBCH), access Physical Downlink Control Channel (PDCCH) and finally access multiple steps such as Physical Downlink Shared Channel (PDSCH), so subscriber equipment receives RRC signaling regular hour expense and power consumption because subscriber equipment receives RRC signaling.When exist there is multiple component carrier in multiple sector/sector time, subscriber equipment is necessary for each sector and each component carrier repeats above step, and so the time overhead of subscriber equipment and power consumption will be very large.Therefore, compare in the industry and wish that subscriber equipment just can demodulate reference signal before the high-level signaling on demodulation PDCCH and PDSCH.
The mode of implicit signaling can meet this requirement, as long as subscriber equipment can be known and the system parameters that the mark of pattern bundlees mutually, so subscriber equipment just can determine pattern used.A kind of implementation is combined at the mark of pattern and system frame number (SystemFrameNumber).Decide through consultation in current draft that CSI-RS should be semi-static: namely do not change in time and change, but can be arranged neatly by base station.Owing to becoming when system frame number is, so need a kind of mode of new signaling to the pattern making subscriber equipment be determined semi-static CSI-RS.
Summary of the invention
According to above background technology, need a kind of new mode to the pattern making subscriber equipment be determined the semi-static CSI-RS that sector is used.
In order to solve this technical problem, inventive concept of the present invention is: use and do not change in time and the sector mark that changes, and pattern parameter that can be arranged neatly by base station as signaling to the pattern making subscriber equipment be determined semi-static CSI-RS.
According to a first aspect of the invention, provide a kind of in the base station of cordless communication network for notifying the method for the reference signal pattern that this sector of subscriber equipment in administrative sector is used, comprise the steps: the mark that this sector is provided to this subscriber equipment; There is provided a pattern parameter to this subscriber equipment, the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used.
According to a second aspect of the invention, provide a kind of in the subscriber equipment of cordless communication network for determining the method for the reference signal pattern that affiliated sector is used, comprise the steps: the mark obtaining this sector from the base station that affiliated sector is administrative; Obtain a pattern parameter from the base station that affiliated sector is administrative, the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used; According to the mark of described pattern parameter and this sector, determine the reference signal pattern that this sector is used.
In in above, provide a kind of pattern determination mode based on invariant in time reference signal, and base station also can arrange the pattern of sector reference signal used neatly.
In in preferred at one, pattern parameter is contained in the bit of Physical Broadcast Channel.Employ broadcast signaling in this aspect, thus subscriber equipment can determine the pattern of reference signal before demodulation PDCCH and PDSCH, saved a lot of time and power.
In in preferred at second, described reference signal pattern comprises the pattern of the first kind and the pattern of Second Type, described determining step comprises the steps: by computational methods corresponding to the pattern of the first kind, calculates the first pattern in the pattern of the first kind corresponding with the mark of this sector with pattern parameter described in this; By the computational methods that the pattern of Second Type is corresponding, calculate the second pattern in the pattern of the Second Type corresponding with the mark of this sector with pattern parameter described in this; Use the method for blind Detecting, the reference signal pattern of the actual use of sector institute belonging to selected from the first pattern and the second pattern.In this aspect, subscriber equipment carries out blind Detecting and determines that sector pattern type used is TDD or TDD/FDD, without the need to base station by extra signaled subscriber equipment.
In in preferred at the 3rd, base station also provides system frame number to subscriber equipment, and subscriber equipment uses this system frame number to determine the sequential parameter of reference signal together with the mark of this sector.In this aspect, a kind of method of sequential parameter of new determination reference signal is provided.
According to a third aspect of the present invention, additionally provide a kind of in the base station of cordless communication network for notifying the equipment of the reference signal pattern that this sector of subscriber equipment in administrative sector is used, comprise: the first transmitter, be configured to the mark that this sector is provided to this subscriber equipment; Second transmitter, is configured to provide a pattern parameter to this subscriber equipment, and the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used.
According to a fourth aspect of the present invention, additionally provide a kind of in the subscriber equipment of cordless communication network for determining the equipment of the reference signal pattern that affiliated sector is used, comprise: the first receiver, be configured to the mark obtaining this sector from the base station belonging to affiliated sector; Second receiver, is configured to obtain a pattern parameter from the base station belonging to affiliated sector, and the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used; Determining device, is configured to the mark according to described pattern parameter and this sector, determines the reference signal pattern that this sector is used.
Embodiment part is hereinafter set forth by above characteristic of the present invention and other characteristics clearly.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, above and further feature, object and advantage of the present invention will become more apparent:
Fig. 1 is according to the embodiment of the present invention, for determining the flow chart of the method for reference signal pattern.
In accompanying drawing, identical or similar accompanying drawing mark represents identical or similar parts.
Embodiment
The reference signal (i.e. CSI-RS) measuring CSI for mobile terminal in embodiment describes in detail inventive concept of the present invention for example.Be appreciated that embodiments of the present invention are applicable to other reference signals too.
In the present embodiment, user terminal UE accesses in the C1 of sector, and sector C1 and other two sector C2 and C3 is administered by base station eNB.Be appreciated that embodiments of the present invention are equally applicable to other network topology structures.
First, in step slo, base station eNB provides the mark CellID of this sector C1 to this user equipment (UE).Concrete, this step can be provided by the mode sending characteristic sequence on descending synchronous signal channel when this user equipment (UE) is linked into this sector.Correspondingly, in step S20, this user equipment (UE) obtains the mark of this sector from the base station belonging to affiliated sector C1.
Afterwards, in step s 12, base station eNB provides a pattern parameter V to this user equipment (UE), and the mark CellID mono-of this pattern parameter V and this sector is used from this user equipment (UE) and determines the reference signal pattern that this sector is used.In one preferred embodiment, in order to make user equipment (UE) determine the reference signal pattern that this sector is used before demodulation PDCCH and PDSCH, pattern parameter V is put into the bit of Physical Broadcast Channel by base station eNB, and sends to this user equipment (UE).Like this, subscriber equipment avoids demodulation PDCCH and PDSCH, saves a lot of time and power; Further, system can with the integral multiple of such as 40ms for the cycle, controls subscriber equipment flexibly and removes to adjust the CSI reference signal pattern that its sector determined uses.In a preferred execution mode, because the resource of Physical Broadcast Channel is most valuable, therefore, pattern parameter only takies a bit length in Physical Broadcast Channel.Correspondingly, in step S22, this subscriber equipment receives this pattern parameter V from the bit of Physical Broadcast Channel.
Afterwards, in step s 24 which, user equipment (UE), according to the mark CellID of pattern parameter V and this sector, determines the reference signal pattern that this sector is used.
In one embodiment, as 3GPPRAN1 define, reference signal pattern comprises the reference signal for TDD and this two type of the reference signal for TDD/FDD.So, determining step S24 comprises the steps.
In step S240, user equipment (UE) is pressed for computational methods corresponding to the reference signal pattern of TDD, calculates the first pattern of the reference signal for TDD corresponding with the mark of this sector with pattern parameter described in this.
In one example in which, the first pattern is for the sequence number S in the reference signal of TDD
1calculate according to following formula (1):
S
1＝mod(cellID+V，N
1)(1)
Wherein, N
1for the pattern number in the reference signal pattern of TDD, N in 3GPPRAN1#61
1equal 3; Mod () is the operation of remainder number.
In step S242, user equipment (UE) is pressed for computational methods corresponding to the reference signal pattern of TDD/FDD, calculates the second pattern of the reference signal for TDD/FDD corresponding with the mark of this sector with pattern parameter described in this.
In one example in which, the second pattern is for the sequence number S in the reference signal of TDD/FDD
2calculate according to following formula (2):
S
2＝mod(cellID+k*V，N
2)(2)
Wherein, N
2for the pattern number in the reference signal pattern of TDD/FDD, N in 3GPPRAN1#61
2equal 5; Mod () is the operation of remainder number.
In general, the sector mark of several (being generally three) sector that same base station is administrative is for step-length continuous print with 1.And V only has a bit, therefore concerning certain sector, the cellID+V after being regulated by V may be just in time identical with another sector.So use a natural number k to be multiplied by V here.Preferably, k is greater than 2, so suitably increases the step-length of adjustment, avoids occurring that multiple sector uses identical value.
Then, in step S244, user equipment (UE) uses the method for blind Detecting, the reference signal pattern of the actual use of sector C1 institute belonging to selected from the first pattern and the second pattern.The reference signal pattern using the method for blind Detecting to choose actual use is known by one of ordinary skill in the art, and the application does not repeat them here.
So far, user equipment (UE) is determined the reference signal pattern that affiliated sector C1 is used.Certainly, base station is that the sequence number that reference signal used is distributed in administrative sector also should meet above formula (1) or (2).That is: when base station is for when to distribute the reference signal used be TDD reference signal in administrative sector, its sequence number in the reference signal of TDD type meets formula (1); When base station is for when to distribute the reference signal used be TDD/FDD reference signal in administrative sector, its sequence number in the reference signal of TDD/FDD type meets formula (2).
It should be noted that above execution mode is described inventive concept of the present invention for the CSI reference signal that there are two types.When only having the CSI reference signal of a type, user equipment (UE) directly can go out the sequence number of sector reference signal pattern used by the formulae discovery corresponding with the type, and without the need to being determined by steps such as blind Detecting; Similarly, when there is the reference signal of two or more type, user equipment (UE) should go out the sequence number of the reference signal pattern that sector may use respectively according to the formulae discovery corresponding with each type, and used by the steps such as blind Detecting selected reality from the reference signal pattern that may use.
In one preferred embodiment, present invention also offers such as, for determining CSI reference signal parameter, the method for sequential parameter.The method can use together with above execution mode, or is used alone.Here example is used as to be described together with above execution mode in this way.
In step S14, base station eNB provides system frame number (SFN) to this user equipment (UE).It should be noted that step number S14 is here only used to distinguish over above step S10 and S12, do not form step S14 and step S10 and S12 any restriction on execution order.Correspondingly, in step S26, the base station eNB acquisition system frame number SFN that this user equipment (UE) is administrative from affiliated sector.Equally, step number S26 here is not formed step S26 and step S20, S22 and the S24 any restriction on execution order yet.Base station eNB provides the method for SFN to be known by one of ordinary skill in the art to user equipment (UE), and the application does not repeat them here.
Then, in step S28, user equipment (UE), according to the mark CellID of this system frame number SFN and this sector, determines the parameter of reference signal, such as sequential parameter etc.
In equipment of the present invention, first, provide a kind of in the base station of cordless communication network for notifying the equipment of the reference signal pattern that this sector of subscriber equipment in administrative sector is used, comprising: the first transmitter, be configured to the mark that this sector is provided to this subscriber equipment; Second transmitter, is configured to provide a pattern parameter to this subscriber equipment, and the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used.
Secondly, equipment aspect of the present invention additionally provide a kind of in the subscriber equipment of cordless communication network for determining the equipment of the reference signal pattern that affiliated sector is used, comprise: the first receiver, be configured to the mark obtaining this sector from the base station belonging to affiliated sector; Second receiver, is configured to obtain a pattern parameter from the base station belonging to affiliated sector, and the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used; Determining device, is configured to the mark according to described pattern parameter and this sector, determines the reference signal pattern that this sector is used.
The those skilled in the art of those the art can pass through research specification, disclosed content and accompanying drawing and appended claim, understand and implement other changes to the execution mode disclosed.These change be in claim equally protection range and spirit within.In the claims, word " comprises " element and step of not getting rid of other, and wording " one " does not get rid of plural number.In the real world applications of invention, the function of the multiple technical characteristics quoted during a part possibility enforcement of rights requires.Any Reference numeral in claim should not be construed as the restriction to scope.
Claims (10)
1. in the base station of cordless communication network for notifying a method for the reference signal pattern that this sector of subscriber equipment in administrative sector is used, comprise the steps:
-mark of this sector is provided to this subscriber equipment;
-provide a pattern parameter to this subscriber equipment and the bit that described pattern parameter puts into Physical Broadcast Channel is sent to this subscriber equipment, the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used.
2. method according to claim 1, is characterized in that, reference signal pattern comprises a pattern in the pattern of the first kind and the pattern of Second Type;
When base station be administrative sector distribute reference signal pattern used belong to the pattern of the first kind time, the sequence number S of this pattern in the pattern of the first kind
1meet following formula:
S
1＝mod(cellID+V，N
1)，
Wherein cellID is the mark of this administrative sector, and V is described pattern parameter, N
1be the pattern number in the pattern of the first kind, mod () is the operation of remainder number;
When base station be administrative sector distribute reference signal pattern used belong to the pattern of Second Type time, the sequence number S of this pattern in the pattern of Second Type
2meet following formula:
S
2＝mod(cellID+k*V，N
2)，
Wherein cellID is the mark of this administrative sector, and k is a natural number, and V is described pattern parameter, N
2be the pattern number in the pattern of Second Type, mod () is the operation of remainder number.
3. method according to claim 1, is characterized in that, also comprises the steps:
-providing system frame number to this subscriber equipment, the mark one of this system frame number and this sector is used from the parameter of this subscriber equipment determination reference signal.
4. method according to claim 1, is characterized in that, described reference signal comprises the reference signal measuring channel status instruction for subscriber equipment.
5. in the subscriber equipment of cordless communication network for determining a method for the reference signal pattern that affiliated sector is used, comprise the steps:
-mark of this sector is obtained from the base station belonging to affiliated sector;
-from the pattern parameter in the bit the base station acquisition Physical Broadcast Channel belonging to affiliated sector, the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used;
-according to the mark of described pattern parameter and this sector, determine the reference signal pattern that this sector is used.
6. method according to claim 5, is characterized in that, described reference signal pattern comprises a pattern in the pattern of the first kind and the pattern of Second Type, and described determining step comprises the steps:
-by computational methods corresponding to the pattern of the first kind, calculate the first pattern in the pattern of the first kind corresponding with the mark of this sector with pattern parameter described in this;
-by computational methods corresponding to the pattern of Second Type, calculate the second pattern in the pattern of the Second Type corresponding with the mark of this sector with pattern parameter described in this;
-use the method for blind Detecting, the reference signal pattern of the actual use of sector institute belonging to selected from the first pattern and the second pattern.
7. method according to claim 6, is characterized in that, described first calculation procedure determines the sequence number S of the first pattern in the pattern of the first kind as follows
1:
S
1＝mod(cellID+V，N
1)，
Wherein cellID is the mark of affiliated sector, and V is described pattern parameter, N
1be the pattern number in the pattern of the first kind, mod () is the operation of remainder number;
Described second calculation procedure determines the sequence number S of the second pattern in the pattern of Second Type as follows
2:
S
2＝mod(cellID+k*V，N
2)，
Wherein cellID is the mark of affiliated sector, and k is a natural number, and V is described pattern parameter, N
2be the pattern number in the pattern of Second Type, mod () is the operation of remainder number.
8. method according to claim 5, is characterized in that, also comprises the steps:
-the base station administrative from affiliated sector obtains system frame number;
-according to the mark of this system frame number and this sector, determine the parameter of reference signal.
9. in the base station of cordless communication network for notifying an equipment for the reference signal pattern that this sector of subscriber equipment in administrative sector is used, comprising:
-the first transmitter, is configured to the mark providing this sector to this subscriber equipment;
-the second transmitter, be configured to provide a pattern parameter to this subscriber equipment and the bit that described pattern parameter puts into Physical Broadcast Channel is sent to this subscriber equipment, the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used.
10. in the subscriber equipment of cordless communication network for determining an equipment for the reference signal pattern that affiliated sector is used, comprising:
-the first receiver, is configured to the mark obtaining this sector from the base station belonging to affiliated sector;
-the second receiver, be configured to obtain the pattern parameter in the bit Physical Broadcast Channel from the base station belonging to affiliated sector, the mark one of this pattern parameter and this sector is used from this subscriber equipment and determines the reference signal pattern that this sector is used;
-determining device, is configured to the mark according to described pattern parameter and this sector, determines the reference signal pattern that this sector is used.
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| CN103944699A (en) * | 2013-01-18 | 2014-07-23 | 中兴通讯股份有限公司 | System frame number information transmission method, device and system |
| CN103997722B (en) * | 2013-02-18 | 2019-06-18 | 中兴通讯股份有限公司 | A kind of method and system of demodulated reference signal |
| CN105282859B (en) * | 2014-07-19 | 2019-08-20 | 上海朗帛通信技术有限公司 | A kind of user equipment, transmission method and device in base station |
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| CN101433007A (en) * | 2006-03-20 | 2009-05-13 | 诺基亚公司 | Channel quality signaling |
| CN101635950A (en) * | 2009-08-14 | 2010-01-27 | 中兴通讯股份有限公司 | Method and device for determining positions of cell reference signals |
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| CN101615950B (en) * | 2008-06-24 | 2011-12-07 | 中兴通讯股份有限公司 | Method and device for transmitting public pilot frequency |
| CN101778418B (en) * | 2009-01-13 | 2014-03-19 | 中兴通讯股份有限公司 | Method and device for triggering or reporting scheduling request in wireless network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101433007A (en) * | 2006-03-20 | 2009-05-13 | 诺基亚公司 | Channel quality signaling |
| CN101635950A (en) * | 2009-08-14 | 2010-01-27 | 中兴通讯股份有限公司 | Method and device for determining positions of cell reference signals |
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