CN101384074B - H-RNTI allocation method under CELL_DCH state - Google Patents
H-RNTI allocation method under CELL_DCH state Download PDFInfo
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Abstract
The invention discloses a distribution method of H-RNTI at a no CELL_CH state, wherein network side broadcasts the space interval partition of beaconing-channel measured value in subdistrict system information and common high-speed downlink shared channel radio network transaction identifier (H-RNTI) corresponding to each space interval; and a user facility reports the self beaconing-channel measured value to the network side, the user facility/the network side gets common H-RNTI according to the beaconing-channel measured value and carries out the sending-receiving of high-speed downlink shared channel HS-DSCH with the H-RNTI. The distribution mechanism of the common H-RNTI provided by the invention can indirectly play the function of improving the open-cycle power control in the CELL_FACH increasing technology and effectively inhibits the interference to subdistrict users.
Description
Technical field
The present invention relates to field of wireless communication, and particularly, relate to the distribution method of the H-RNTI (HS-DSCH-Radio Network Temporary Identifier) when transmitting HS-DSCH (high speed descending sharing channel) under a kind of non-CELL _ DCH (CELL _ DCH) state.
Background technology
At present, 3GPP (3G (Third Generation) Moblie partnership) has accomplished the standardization effort that CELL_FACH (sub-district _ forward access channel) state strengthens in WCDMA (WCDMA access) system.
The CELL_FACH state strengthens through introducing the packet data transmission performance that HS-DSCH (high speed descending sharing channel) transmission channel strengthens this state at the CELL_FACH state, makes it obtain less packet transfer delay and higher transmission rate.This mechanism also has been incorporated into paging and the transfer of data under URA_PCH (UTRAN Registration Area _ PCH) and CELL_PCH (cell _ paging channel) state.
In the version before the 3GPP Rel-7; The HS-DSCH channel only uses under CELL_DCH (CELL _ DCH) state; Network side is being subscriber equipment (UserEquipment; When UE) setting up the relevant radio bearer of descending HS-DSCH, dispose one group of HS-SCCH (at a high speed-shared control channel) channel and HS-SICH (at a high speed-shared indicating channel) channel and H-RNTI (HS-DSCH Radio Network Temporary Identifier) for UE in advance.This group HS-SCCH/HS-SICH channel is that a plurality of UE share, and H-RNTI is the UE special use, and UE judges through the H-RNTI on the identification HS-SCCH whether this transmission points to oneself.In case detected the HS-SCCH channel that points to oneself, then read the information on the HS-SCCH channel.
The last concrete signaling content of HS-SCCH is as shown in Figure 1, and wherein, code channel and gap information indication UE are about to HS-PDSCH (high speed down sharing physical channel) channel resource that receives; Modulation system and transport block length indication transformat.Behind predetermined timing time nHS-SCCH; UE receives data on the HS-PDSCH of appointment channel; And (Hybrid Automatic Retransmission Request HARQ) feeds back behind the timing nHS-SICH of appointment, on the HS-SICH channel, to mix automatic repeat requests.The sketch map of a HS-DSCH process of transmitting under the CELL_DCH state is as shown in Figure 2.
When carrying out the HS-DSCH transmission under the CELL_FACH state, information such as HS-SCCH channel, H-RNTI are broadcasted in cell system information, because these H-RNTI are shared by the UE in the sub-district, thereby are called public H-RNTI.When UE initiates RRC (Radio Resource control) connection request or pass through new sub-district of district reselecting arrival to initiate the cell update request from Idle state, use the public H-RNTI in the cell system message to intercept the HS-SCCH channel.A plurality of public H-RNTI are arranged in the sub-district, and UE selects the method for H-RNTI following:
The index of selected H-RNTI=UE sign mod K, wherein K is the number of H-RNTI in the public H-RNTI tabulation of broadcasting in the cell system information; For the UE of idle condition, the UE sign is the initial marking that UE carries in RRC (Radio Resource control) connection request message; For the UE of connection status, the UE sign is U-RNTI (UTRAN Radio Network Temporary Identifier).
The HS-DSCH transmission course is as shown in Figure 3 next time for the CELL_FACH state, and different with the transmission under the CELL_DCH state is that UE need not carry out the HARQ feedback.In case UE detects HS-SCCH and goes up one's own H-RNTI; To receive HS-PDSCH according to the indication on the HS-SCCH, and with the HS-PDSCH data decode correctly that the back identifies through the UE in the RRC message of upper strata or MAC-c (public medium access control) PDU (protocol Data Unit) in U-RNTI come recognition data whether to one's name.
After UE gets into connection status, when RNC (radio network controller) disposes the DTCH/DCCH channel for UE, the H-RNTI of configure dedicated.UE uses special-purpose H-RNTI to receive the HS-SCCH channel after possessing special-purpose H-RNTI, does not receive and do not re-use public H-RNTI.
Because a series of enhancement techniques of HS-DSCH itself (as based on the scheduling of Node B, HARQ etc.) can improve data transfer rate effectively, thereby will significantly improve signaling delay and the data transfer rate under CELL_FACH, CELL_PCH, the URA_PCH state behind the introducing HS-DSCH.
TD-SCDMA (Time Division-Synchronous Code Division MultipleAccess, TD SDMA inserts) also considers to carry out similar enhancing.TD-SCDMA is an interference limiting system, in the TD-SCDMA system, has used power control techniques widely, disturbs, improves power system capacity to reduce effectively.
When the CELL_DCH state carried out the HS-DSCH transmission, descending HS-SCCH channel and up HS-SICH channel constituted a fast closed-loop power control system, and UE measures the transmission quality of HS-SCCH channel and on the HS-SICH channel, sends closed loop power control command.When the CELL_FACH state carries out the HS-DSCH transmission, owing to do not possess paired uplink and downlink channel, thereby can't carry out closed power control to HS-SCCH, can only carry out open Loop Power control.In addition, under the CELL_DCH state, Node B can carry out figuration to single UE when sending HS-SCCH channel and HS-PDSCH channel, reduce the interference to other UE; And under the CELL_FACH state,, thereby needing theaomni-directional transmission owing to the HS-SCCH/HS-PDSCH that sends is directed against to intercept the UE of same public H-RNTI, used power should be considered Cell Edge User.
More than two aspects all show, in TD-SCDMA, carry out CELL_FACH when strengthening, if the effective power control device of neither one will be brought bigger interference to other user in the sub-district.For this problem, do not find effective solution route at present as yet.
Summary of the invention
Consider the problems referred to above that exist in the correlation technique and propose the present invention, for this reason, the present invention aims to provide the distribution method of H-RNTI under a kind of non-CELL _ DCH state.
In the method, the interval division of network side broadcast cell beacon channel measured value in cell system message and each interval corresponding public high speed descending sharing channel Radio Network Temporary Identifier are H-RNTI; Subscriber equipment reports network side with the beacon channel measured value of self, and subscriber equipment/network side obtains the public H-RNTI of subscriber equipment according to the beacon channel measured value, and uses this H-RNTI to carry out the transmitting-receiving that high speed descending sharing channel is HS-DSCH.
Wherein, before broadcasting, network side carries out interval division to the beacon channel measured value in advance, and is respectively each interval public H-RNTI of distribution.In this was handled, the beacon channel measured value that network side carries out interval division was: the path loss values of beacon channel.
The beacon channel measured value of user equipment to report is: the received signal code power of beacon channel or the path loss values of beacon channel.
Like this, subscriber equipment/network side can at first be confirmed the interval at beacon channel measured value place, confirms the public H-RNTI that this interval is corresponding again.
Particularly, on the one hand, for subscriber equipment, subscriber equipment at first obtains the path loss values of beacon channel through the received signal code power of beacon channel, obtains the public H-RNTI of subscriber equipment then according to the path loss values of beacon channel.
On the other hand; For network side; When the beacon channel measured value of user equipment to report is the received signal code power of beacon channel; Network side at first obtains the path loss values of beacon channel through the received signal code power of beacon channel, obtain the public H-RNTI of subscriber equipment again according to the path loss values of beacon channel; When the beacon channel measured value of user equipment to report was the path loss values of beacon channel, network side directly obtained the public H-RNTI of subscriber equipment according to the path loss values of beacon channel.
In addition, in this method according to the present invention, different interval corresponding distinct transmit power stages, and transmit power levels can be by network side according to simulation value and/or actual measured value setting.
Also need to prove; When subscriber equipment need switch public H-RNTI; Before confirming that network side correctly receives its beacon channel measured value that reports; Intercept original public H-RNTI and the new public H-RNTI that will switch to, after confirming that network side correctly receives its beacon channel measured value that reports, switch to new public H-RNTI.Wherein, if subscriber equipment receives the affirmation message of wireless chain control layer, confirm that then network side has correctly received its beacon channel measured value that reports.
Through the distribution mechanism of public H-RNTI provided by the invention, in the CELL_FACH enhancement techniques, can play the effect that improves open Loop Power control indirectly, suppressed interference effectively to community user.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the sketch map that the signaling content of HS-SCCH channel in the existing system is shown;
Fig. 2 is the sketch map that illustrates according to HS-DSCH transmission next time of CELL_DCH state in the TD-SCDMA system of correlation technique and receiving course;
Fig. 3 is the sketch map that illustrates according to HS-DSCH transmission next time of CELL_FACH state in the TD-SCDMA system of correlation technique and receiving course; And
Fig. 4 is the flow chart according to the distribution method of H-RNTI under the non-CELL _ DCH state of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
As stated, TD-SCDMA is an interference limiting system, when introducing a new business characteristic, need consider how to carry out effective power control and disturb inhibition.When the HS-DSCH channel is incorporated into CELL_FACH, CELL_PCH, URA_PCH state, disturb the mechanism that suppresses owing to lack closed power control and wave beam forming etc., may bring bigger interference, influence normally carrying out of other customer service.Just be based on this environment, the embodiment of the invention provides the distribution method of H-RNTI under a kind of non-CELL _ DCH state.
Wherein, in fact the CELL_FACH enhancing comprises the enhancing to a plurality of states such as CELL_FACH, CELL_PCH, URA_PCH, and in back 2 states, beep-page message carries out through the HS-SCCH-LESS technology, and UE need not distribute H-RNTI; Carry out data when direct transferring at the CELL_PCH state, UE is assigned special-purpose H-RNTI.Thereby with regard to present technology, public H-RNTI only can exist at the CELL_FACH state, thereby present embodiment will be discussed to the CELL_FACH state.
As shown in Figure 4, this method can comprise following processing (step S402 and step S404):
The interval division of step S402, network side broadcast cell beacon channel measured value in cell system message and each interval corresponding H-RNTI;
Step S404, UE reports network side with the beacon channel measured value of self, and the UE/ network side obtains the public H-RNTI of UE according to the beacon channel measured value, and uses this H-RNTI to carry out the transmitting-receiving of HS-DSCH.
Before broadcasting, network side carries out interval division to the beacon channel measured value in advance, and is respectively each interval public H-RNTI of distribution; In this was handled, the beacon channel measured value that network side carries out interval division was the path loss values of beacon channel.
In the TD-SCDMA system, beacon channel generally is P-CCPCH channel (Primary Common Control Physical Channel), in existing system, to this channel a kind of general measured value is arranged: received signal code power (RSCP); And two kinds of measurement and report amount: RSCP and path loss (Path loss) are arranged to the P-CCPCH channel.Beacon channel P-CCPCH transmitting power deducts UE, and to measure the RSCP that P-CCPCH obtains be exactly path loss, thereby can directly obtain information on path loss through the RSCP of beacon channel.The path loss of mentioning among the present invention is exactly the path loss measured value to the P-CCPCH channel.In the prior art, beacon message P-CCPCH transmitting power is broadcasted in system information by network side or is notified UE through dedicated signaling.
Wherein, path loss values has been represented the air line distance between UE and the Node B, affects the setting of Node B to transmitting power, and under the situation of big path loss (away from Node B), Node B can use bigger transmit power levels; And under the situation of little path loss (near NodeB), Node B uses less transmitting power.The present invention divides different intervals with path loss values; Each interval is associated with different H-RNTI; Like this, there is the UE of close path loss values can intercept same H-RNTI, makes Node B that identical power stage can be set the emission of same public H-RNTI; And the emission of different public H-RNTI is provided with the different power level; Both satisfied the reception requirement to the UE that uses same public H-RNTI, and reached the purpose of improving power emission again, promptly Node B there is no need when each emission, need look after the reception of Cell Edge User.Can save transmitting power greatly than original system, reduce and disturb.
Above-mentioned processing shown in Fig. 4 below will be described in further detail.
(1) about step S402
Network side rule of thumb is worth the interval that (from emulation or actual drive test) divided beacon channel measured value (path loss values), different interval corresponding distinct transmit power stages.The scope of path loss values (dB of unit) between [46,158] in the TD-SCDMA system, a kind of zoned format is as shown in table 1 below, wherein, P1, P2...Pn+1 have represented the distinct transmit power stage, by network side according to emulation and/or actual measured value setting.
The interval division of table 1 path loss measured value
| Path loss is interval | Transmit power levels |
| [46，L1) | P1 |
| [L1，L2) | P2 |
| ... | |
| [Ln，158] | Pn+1 |
Network side is broadcasted the described path loss interval division of table 1 information in cell system information, and a public H-RNTI is distributed in different intervals.This allocation list can dispose in system information block 5.A kind of configuration mode wherein is as shown in table 2 below:
The information unit of the corresponding relation of table 2 path loss interval and H-RNTI
| Information element | Essential | Type | Explain |
| H-RNTI information | 1..maxPLPartition | MaxPLPartition: maximum path loss interval division number | |
| ＞path loss | Essential | Integer | Fill in the interval value of each interval division right-of-center in political views of table 1 |
| ＞H-RNTI | Essential | ?Bitstring(16) | Bitstring: Bit String |
UE reads the configuration information in the table 2 from system information after, portion forms following information within it:
The information of path loss interval-H-RNTI that table 3 UE obtains
| Path loss is interval | H-RNTI |
| [46，L1) | H-RNTI1 |
| [L1，L2) | H-RNTI2 |
| ... | |
| [Ln，158] | H-RNTIn+1 |
Wherein, Right interval value in the table 3 in each interval is exactly each path loss values that disposes in " H-RNTI information " loop body in the table 2; H-RNTIi in the table 3 (i=1..n+1) is exactly each the H-RNTI value that disposes in " H-RNTI information " loop body in the table 2, and table 2 is interval in path loss with table 3 should to be consistent with the corresponding aspects of H-RNTI.
(2) about step S404
UE is according in the existing TD-SCDMA system measurement requirement of beacon channel being measured.And UE calculates path loss values according to the measurement result RSCP of beacon channel, selects a public H-RNTI according to table 3.Simultaneously, UE need give network side with reporting measuring result, makes network side can synchronously select an identical public H-RNTI.The measurement result that UE reports can be the received signal code power (RSCP) of beacon channel or the path loss values of beacon channel.
In the initialization signaling stage; When UE gets into new sub-district and initiates the cell update request at the RRC connection request or through district reselecting; " Measured results on RACH " information unit through wherein reports network side with measurement result (RSCP); Network side calculates the path loss values of UE in view of the above, thereby obtains the public H-RNTI information of this UE.After getting into the CELL_FACH state, in correlation technique, network side can require UE regularly to carry out FACH (forward access channel) measurement, and the RSCP that wherein comprises beacon channel measures, and the measurement result that reports can be RSCP value or path loss values.Therefore; For network side; When the beacon channel measured value that reports as UE was the RSCP of beacon channel, network side at first obtained the path loss values of beacon channel through the RSCP of beacon channel, obtain the public H-RNTI of UE again according to the path loss values of beacon channel; When the beacon channel measured value that reports as UE was the path loss values of beacon channel, network side directly obtained the public H-RNTI of UE according to the path loss values of beacon channel.
In addition, because UE maybe be in constantly moving, the measurement result (RSCP or path loss) that 2 times report before and after the UE may obtain 2 different H-RNTI, and this just needs UE and network side synchronously to upgrade public H-RNTI.
Under above-mentioned situation, UE need intercept 2 H-RNTI before the network side that knows for sure has correctly received the measurement report of oneself, and one is the H-RNTI that is originally using, and another is the H-RNTI that selects according to new measured value.After knowing that clearly network side correctly receives the measurement report of oneself, UE just is transformed on the new public H-RNTI.
Because measurement report generally uses the Radio Link control (RLC of AM (affirmation mode) pattern; Radio Link Control) agreement, thereby UE judgement network side receives that correctly the foundation of the measurement report of oneself is that UE has received ACK (affirmation) information from the rlc layer of network side.It should be noted that the research prerequisite in the CELL_FACH enhancing project is that UE can be very not long in the time of staying of CELL_FACH state, the general order of magnitude in second; And UE only uses public H-RNTI in the initialization signaling stage.Like this, the measured value that UE reported in the initialization signaling stage is enough kept the link adaptation requirement in this stage, thus UE probability that public H-RNTI switches takes place can be very little.
Afterwards, network side sends the corresponding H-RNTI of beacon channel measurement result that should use this UE to report to the information of this UE.
Also need to prove; In the TD-SCDMA system; Also have an important measurement ISCP (Interference Signal Code Power, Interference Signal Code Power), network side can be measured the power emission of among a small circle, adjusting to single UE by means of this.In addition; The time lack effective feedback mechanism owing to carry out the HS-DSCH transmission at non-CELL _ DCH state, Node B also to measure according to these (RSCP and ISCP) carry out transformat (transport block length and modulation system) selection, retransmit control (confirming number of retransmissions).Through the combination of various control methods, can improve efficiency of transmission greatly.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the distribution method of high speed descending sharing channel Radio Network Temporary Identifier H-RNTI under the non-CELL _ DCH CELL_DCH state is characterized in that, comprising:
The interval division of network side broadcast cell beacon channel measured value in cell system message and each interval corresponding public high speed descending sharing channel Radio Network Temporary Identifier are H-RNTI;
Subscriber equipment reports network side with the beacon channel measured value of self, and subscriber equipment/network side obtains the public H-RNTI of subscriber equipment according to said beacon channel measured value, and uses this H-RNTI to carry out the transmitting-receiving that high speed descending sharing channel is HS-DSCH.
2. method according to claim 1 is characterized in that, before broadcasting, said network side carries out interval division to the beacon channel measured value in advance, and is respectively each interval public H-RNTI of distribution.
3. method according to claim 2 is characterized in that, the said beacon channel measured value that said network side carries out interval division is: the path loss values of beacon channel.
4. according to each described method in the claim 1 to 3, it is characterized in that the said beacon channel measured value of said user equipment to report is: the received signal code power of beacon channel or the path loss values of beacon channel.
5. method according to claim 4 is characterized in that, said subscriber equipment/network side is at first confirmed the interval at said beacon channel measured value place, confirms the public H-RNTI that this interval is corresponding again.
6. method according to claim 5; It is characterized in that; Said subscriber equipment at first obtains the path loss values of beacon channel through the received signal code power of beacon channel, obtain the public H-RNTI of said subscriber equipment then according to the path loss values of beacon channel.
7. method according to claim 5 is characterized in that,
When the said beacon channel measured value of said user equipment to report is the received signal code power of beacon channel; Said network side at first obtains the path loss values of beacon channel through the received signal code power of beacon channel, obtain the public H-RNTI of said subscriber equipment again according to the path loss values of beacon channel;
When the said beacon channel measured value of said user equipment to report was the path loss values of beacon channel, said network side directly obtained the public H-RNTI of said subscriber equipment according to the path loss values of beacon channel.
8. according to each described method in the claim 1 to 3, it is characterized in that, different interval corresponding distinct transmit power stages, and said transmit power levels can be by said network side according to simulation value and/or actual measured value setting.
9. according to each described method in the claim 1 to 3; It is characterized in that; When said subscriber equipment need switch public H-RNTI, before confirming that said network side correctly receives its beacon channel measured value that reports, intercept original public H-RNTI and the new public H-RNTI that will switch to; After confirming that said network side correctly receives its beacon channel measured value that reports, switch to new public H-RNTI.
10. method according to claim 9 is characterized in that, if said subscriber equipment receives the affirmation message of wireless chain control layer, confirms that then said network side has correctly received its beacon channel measured value that reports.
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| CN102448025B (en) * | 2010-09-30 | 2015-07-08 | 华为技术有限公司 | Method and device for paging user equipment (UE) in Cell_PCH state |
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| CN1343433A (en) * | 1999-03-10 | 2002-04-03 | 诺基亚网络有限公司 | Identifier allocation method |
| CN1897752A (en) * | 2006-06-15 | 2007-01-17 | Ut斯达康通讯有限公司 | Method for generating user identifier H-RNTI of HSDPA system |
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| CN1343433A (en) * | 1999-03-10 | 2002-04-03 | 诺基亚网络有限公司 | Identifier allocation method |
| CN1897752A (en) * | 2006-06-15 | 2007-01-17 | Ut斯达康通讯有限公司 | Method for generating user identifier H-RNTI of HSDPA system |
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