CN101594690A - Select the method for uplink transport channel - Google Patents
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Abstract
In the method for selection uplink transport channel disclosed by the invention, the enhanced ue that sets in advance under the CELL_FACH state is supported E-DCH and RACH simultaneously, when needs carry out channel configuration for described enhanced ue, network side is that described enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue, in the middle of business was carried out, the enhanced ue under the described CELL_FACH of the being in state was periodically selected uplink transport channel according to current arrival rate and the buffer memory that carries out business.Using the present invention can rational allocation RACH and E-DCH resource.
Description
Technical field
The present invention relates to TD SDMA and insert (TD-SCDMA) system high-speed grouping access (HSPA) technology, particularly select the method for uplink transport channel.
Background technology
In the TD-SCDMA system, subscriber equipment (UE) has two kinds of basic operational modes: idle pulley and connection mode.After the UE start powers on, enter idle pulley; UE under the idle pulley receives the paging of system or receives the upper strata request and sets up Radio Resource control (RRC) when connecting, and finishes RRC and connects and set up, and transfer to connection mode from idle pulley; When RRC connects release, transfer to idle pulley from connection mode.
Under connection mode, UE has four kinds of states: CELL_FACH state, CELL_DCH state, CELL_PCH state and URA_PCH state.Different states has reflected which transmission channel the connection rank of UE and UE can use.TD SDMA inserts (TD-SCDMA) system three kinds of uplink transport channel: Random Access Channel (RACH), dedicated transmission channel (DCH) and enhancing dedicated channel (E-DCH).Wherein:
RACH is a common signal channel;
DCH is a dedicated channel;
E-DCH is divided into two kinds: the E-DCH of non-scheduling type and the E-DCH of scheduling type, and wherein, the E-DCH of non-scheduling type belongs to dedicated channel, and the E-DCH of scheduling type is a shared channel.
Below by the process that the E-DCH that briefly introduces use RACH and scheduling type carries out uplink, analyze its characteristics separately and suitable business characteristic:
Fig. 1 is the existing process schematic diagram that uses RACH to carry out transmitting uplink data.Referring to Fig. 1, this process comprises:
Step 101:UE sends uplink synchronous code (SYNC-UL) to base station (NodeB), carries out physical layer and inserts at random.
After step 102:NodeB received the SYNC-UL of UE transmission, (FPACH) carried out initial authorization to UE by physical access channel.
Step 103: since then, UE inserts success at random, can carry out transmitting uplink data on RACH.
Fig. 2 carries out the process schematic diagram of transmitting uplink data for the E-DCH of existing use scheduling type.Referring to Fig. 2, this process comprises:
Step 201:UE sends SYNC-UL to NodeB, carries out physical layer and inserts at random.
Step 202:NodeB carries out initial authorization by FPACH to UE.
Step 203:UE initiates to insert at random by enhanced uplink random access channel (E-RUCCH), carries Radio Network Temporary Identifier (E-RNTI) and service indication (SI).Here, E-RUCCH is mapped to Physical Random Access Channel (PRACH).
Step 204:NodeB sends absolute grant information by strengthening up absolute access grant channel (E-AGCH) to UE.
Step 205: since then, UE inserts success at random, can strengthen the carrying of carrying out transmission of uplink data and strengthening ascending control channel (E-UCCH) on the uplink physical channel (E-PUCH).
The correctness that step 206:NodeB will receive according to upstream data is gone up to UE and is sent response message (ACK) or non-response message (NACK) strengthening ascending HARQ answering indication signal channel (E-HICH).
Contrast transmitting uplink data process illustrated in figures 1 and 2 as seen, because E-RUCCH has fixing protocol format to be used to transmit SI, therefore, must the first to file resource when using E-DCH to carry out transmitting uplink data, this Duos signalling interactive process one time than using RACH to carry out transmitting uplink data.
At present, for traditional UE, network side will guarantee that speed is higher, the UE of higher priority business is configured in the CELL_DCH state, and regulation: under the CELL_DCH state, UE uses DCH or E-DCH to carry out transmitting uplink data; The UE of the business that speed is lower, priority is low of assurance is configured in the CELL_FACH state, and regulation: under the CELL_FACH state, UE uses RACH to carry out transmitting uplink data, and the QoS of survice requirement of traditional UE has been satisfied in this configuration substantially.
For enhanced ue, the UE that network side will have the business of real-time requirement is configured in the CELL_DCH state, and regulation: under the CELL_DCH state, UE uses the E-DCH of scheduling and non-scheduling type to carry out transmitting uplink data; To there be the UE of the business of real-time requirement to be configured in the CELL_FACH state, and in 3GPP R7 and later version, stipulate: under the CELL_FACH state, UE uses the E-DCH of scheduling type to carry out transmitting uplink data, that is: the UE of UE under the CELL_DCH state under the CELL_FACH state dispatched in the network side unification by NodeB.
Though, use E-DCH to carry out transmitting uplink data, make NodeB can be the continuous resource of the configuration of the UE under the CELL_FACH state, and can use and mix the efficiency of transmission that automatic repeat requests (HARQ) technology improves physical layer; Yet, as previously mentioned: must the first to file resource when using E-DCH to carry out transmitting uplink data, this Duo signalling interactive process one time than using RACH to carry out transmitting uplink data, and this makes that under some application scenarios the efficiency of transmission of E-DCH is not so good as traditional RACH.For example:
1) business that qos requirement is lower, service rate is lower, data volume is few is more suitable for transmitting on RACH, but according to afore mentioned rules, this business but can only be transmitted on E-DCH;
2) lower when the UE dispatching priority that is in the CELL_FACH state, can not obtain scheduling for a long time, and the RACH channel is when idle, system can not adjust traffic carrying capacity between E-DCH and RACH;
3) may enhanced ue be arranged existing traditional UE again in the network, for the traditional UE of compatibility, system should dispose RACH channel and E-DCH channel simultaneously, yet, can only use E-DCH to transmit owing to be in the enhanced ue of CELL_FACH state, fail RACH is realized effectively utilizing.
By as seen above-mentioned, in RACH and the simultaneous network of E-DCH, because prior art regulation enhanced ue is under the CELL_FACH state, regardless of service priority, regardless of the channel loading situation, can only use E-DCH to transmit, make that RACH and E-DCH resource can't reasonably be allocated, have the bottleneck of resource utilization ratio.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of selecting uplink transport channel, with the data transmission efficiency of raising enhanced ue under the CELL_FACH state, and rational allocation RACH and E-DCH resource.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of selecting uplink transport channel is used to the enhanced user equipment UE that is under the CELL_FACH state to select uplink transport channel, comprising:
The enhanced ue that sets in advance under the CELL_FACH state supports to strengthen dedicated channel E-DCH and Random Access Channel RACH simultaneously;
When needs carried out channel configuration for described enhanced ue, network side was that described enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue.
Further, can set in advance high speed thresholding, low guaranteed speed thresholding, high priority thresholding and the low priority thresholding of guaranteeing; The described high speed thresholding that guarantees is greater than described low guaranteed speed thresholding, and described high priority thresholding is greater than the low priority thresholding;
Described network side is that described enhanced ue is selected and the collocating uplink transmission channel comprises according to the assurance speed and the priority of the business of described enhanced ue: the enhanced ue of single signaling bear business is configured in RACH; For single professional enhanced ue, the assurance speed of business is configured in E-DCH greater than the described high enhanced ue that guarantees that speed thresholding and priority are higher than described high priority thresholding, the assurance speed of business is configured in RACH less than the enhanced ue that described low guaranteed speed thresholding and priority are lower than described low priority thresholding; For compound professional enhanced ue, when the assurance speed of a business in the described compound business greater than described high when guaranteeing that speed thresholding and priority are higher than described high priority thresholding, described enhanced ue is configured in E-DCH, when the assurance speed of all business in the described compound business all is lower than described low priority thresholding less than described low guaranteed speed thresholding and priority, described enhanced ue is configured in RACH.
Describedly comprise need carry out channel configuration for described enhanced ue the time: receive when radio resource control RRC is set up request, receive when RAB RAB sets up request or when receiving the RAB removal request.
After receiving described request, may further include: network side is judged described request of receiving, if being RRC, described request of receiving sets up request, then described enhanced ue is configured in RACH, otherwise the described network side of continuation execution is that described enhanced ue is selected the also operation of collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue.
Network side according to the assurance speed of the business of described enhanced ue and priority be described enhanced ue select and the collocating uplink transmission channel after, may further include: in the middle of business was carried out, described enhanced ue was periodically selected uplink transport channel according to the arrival rate and the buffer memory of described business.
A kind of method of selecting uplink transport channel is used to the enhanced user equipment UE that is under the CELL_FACH state to select uplink transport channel, comprising:
The enhanced ue that sets in advance under the CELL_FACH state supports to strengthen dedicated channel E-DCH and Random Access Channel RACH simultaneously;
In the middle of business was carried out, the enhanced ue under the described CELL_FACH of the being in state was periodically selected uplink transport channel according to current arrival rate and the buffer memory that carries out business.
After the capable in the choice transmission channel, may further include: whether the uplink transport channel of judging described selection is identical with the professional current current uplink transport channel of using, if it is inequality, then after current uplink transport channel is sent completely, with the uplink transport channel of described selection as current uplink transport channel.
Further, can set in advance the initial rate thresholding; Before described business is carried out, further comprise: described enhanced ue judges whether network side is its selection and has disposed uplink transport channel, if do not have, the size of the initial rate thresholding of the initial rate of more described business and described setting then, if the initial rate of described business is greater than the initial rate thresholding of described setting, then select E-DCH as uplink transport channel, otherwise, select RACH as uplink transport channel.
Further set in advance arrival rate thresholding, buffer memory thresholding and channel selection cycle;
Enhanced ue under the described CELL_FACH of the being in state periodically selects uplink transport channel to comprise according to current arrival rate and the buffer memory that carries out business: starting timing length is the timer of described channel selection cycle; When described timer expiry, if professional arrival rate greater than described arrival rate thresholding or buffer memory greater than described buffer memory thresholding, then select E-DCH, otherwise, select RACH; Restart the timer that described timing length is described channel selection cycle.
This method may further include: if receive the network channels configuration messages in business is carried out, then after current uplink transport channel is sent completely, restart described timer, and channel appointed is set to uplink transport channel in the described channel configuration message.
If current uplink transport channel is E-DCH, then described current uplink transport channel is sent completely and is meant: receive that mixed automatic repeat requests response message HARQACK or the last data transmission block that sends corresponding to the last data transmission block that sends reach maximum retransmission;
If current uplink transport channel is RACH, then described current uplink transport channel is sent completely and is meant: after sending uplink synchronous code Syn_UL, transmission on the Physical Random Access Channel PRACH resource that is associated with physical access channel FPACH in Preset Time is finished, perhaps when physical layer in a power that has begun climbs the scope of the maximum Syn_UL the number of transmissions that the cycle allowed, on FPACH, do not receive one synchronously and license confirmation.
This method may further include: if when RACH is begun uplink as current uplink transport channel, current last E-DCH transmission is sent completely, then close the T-WAIT timer that started, stop and the relevant physical layer uplink synchronous random access procedure of enhanced uplink random access channel E-RUCCH, and judge whether to start the T-RUCCH timer, if start, then judge whether before the T-RUCCH timer expired, to receive authorization message, if receive, then in authorization resources, send data retransmission and last new data; If before the T-RUCCH timer, do not receive resource authorization, then carry out following operation:
If last E-DCH transmission is finished, then close this T-RUCCH timer, and with the N_RUCCH zero clearing, the E-AGCH mandate of receiving in the cycle at RACH subsequently is all invalid, the relevant access procedure of beginning RACH;
If last E-DCH transmission does not also reach maximum retransmission, then resend SI, carry the re-transmission buffer data size among the TEBS in SI, and restart the T_RUCCH timer, current E-DCH retransmits or SI transmission number of times reaches N_RUCCH until finishing, the E-AGCH mandate of receiving in the cycle at RACH subsequently is all invalid, the relevant access procedure of beginning RACH.
As seen from the above technical solution, the enhanced ue for being under the CELL_FACH state that the present invention proposes is selected in the method for uplink transport channel, support E-DCH and RACH as uplink transport channel simultaneously by the enhanced ue that sets in advance under the CELL_FACH state, make the spendable uplink transport channel of enhanced ue that is under the CELL_FACH state be not limited only to E-DCH, thereby make priority lower, the lower business of speed can be at suitable transmission channel---sends on the RACH channel, and then realized RACH and the allotment of E-DCH reasonable resources, improved the data transmission efficiency of enhanced ue under the CELL_FACH state.
Provided by the invention by network side according to the assurance speed of the business of enhanced ue with priority is selected for this enhanced ue and the method for collocating uplink transmission channel, and carry out the method that professional arrival rate and buffer memory are periodically selected uplink transport channel according to current by enhanced ue, owing to carrying out uplink transport channel when selecting or based on the qos requirement of business, or based on the traffic performance of real-time detection, therefore, described two kinds of methods all can realize the raising of RACH and allotment of E-DCH reasonable resources and the data transmission efficiency of enhanced ue under the CELL_FACH state.
In addition, in the method that said method is combined that the present invention proposes, network side requires to be enhanced ue transmission uplink transport channel by QoS of survice, enhanced ue is then independently adjusted the uplink transport channel of himself by real-time detection traffic performance, thereby make network side and UE side form the good advantages complementation, make the selection of uplink transport channel carry out based on load state information and real-time monitoring traffic performance information, therefore, can further improve the resource utilization and the professional efficiency of transmission of system.
Description of drawings
Fig. 1 is the existing process schematic diagram that uses RACH to carry out transmitting uplink data;
Fig. 2 carries out the process schematic diagram of transmitting uplink data for the E-DCH of existing use scheduling type;
Fig. 3 is a schematic flow sheet of selecting uplink transport channel in a preferred embodiment of the present invention;
Fig. 4 is a schematic flow sheet of selecting the method for uplink transport channel in the embodiment of the invention one;
Fig. 5 is a schematic flow sheet of selecting the method for uplink transport channel in the embodiment of the invention two.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The application's main thought is: make the enhanced ue under the CELL_FACH state both can use the E-DCH of scheduling type (if no special instructions following, E-DCH promptly represents the E-DCH of scheduling type) as uplink transport channel, also can use RACH as uplink transport channel, the any channel of concrete use, can determine by network side, or independently select by UE, or both combinations, that is: network side carries out can carrying out Dynamic Selection again according to service needed by UE after the uplink transport channel configuration.So, make the spendable uplink transport channel of enhanced ue that is under the CELL_FACH state be not limited only to E-DCH, thereby make priority is lower, speed the is lower business can be at suitable transmission channel---send on the RACH channel, and then realized RACH and the allotment of E-DCH reasonable resources.
Based on above-mentioned main thought, the present invention proposes following three kinds of methods of selecting uplink transport channel.
First method: by network side is that the enhanced ue that is under the CELL_FACH state is selected uplink transport channel, and this method comprises:
The enhanced ue that sets in advance under the CELL_FACH state is supported E-DCH and RACH simultaneously;
When needs carried out channel configuration for described enhanced ue, network side was that described enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue.
Second method: by network side is that the enhanced ue that is under the CELL_FACH state is selected the initial uplink transmission channel, and by enhanced ue Dynamic Selection uplink transport channel in the middle of business is carried out.Fig. 3 shows the schematic flow sheet of this method, and referring to Fig. 3, this method comprises:
Step 301: the enhanced ue that sets in advance under the CELL_FACH state is supported E-DCH and RACH simultaneously;
Step 302: when needs carried out channel configuration for described enhanced ue, network side was that described enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue;
Step 303: in the middle of business was carried out, described enhanced ue was periodically selected uplink transport channel according to the arrival rate and the buffer memory of described business.
The third method: by enhanced ue Dynamic Selection uplink transport channel in the middle of business is carried out, this method comprises:
The enhanced ue that sets in advance under the CELL_FACH state is supported E-DCH and RACH simultaneously;
In the middle of business was carried out, the enhanced ue under the described CELL_FACH of the being in state was periodically selected uplink transport channel according to current arrival rate and the buffer memory that carries out business.
Because network side is set up at RRC, RAB (RAB) is set up, RAB carries out the transmission channel configuration when discharging, with UE Dynamic Selection transmission channel in business is carried out, contradiction not between the two, this makes the present invention select the method for uplink transport channel to be achieved for above-mentioned second kind.
In the method for first kind of selection uplink transport channel that the invention described above provided, network side is that this enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed and the priority of the business of enhanced ue; The third that the invention described above provided selected in the method for uplink transport channel, enhanced ue is periodically selected uplink transport channel according to current arrival rate and the buffer memory that carries out business, and these two kinds of methods all can realize RACH and the allotment of E-DCH reasonable resources.
In addition, in the second method that described first method and the third method are combined that the present invention proposes, network side requires to be enhanced ue transmission uplink transport channel by QoS of survice, enhanced ue is then independently adjusted the uplink transport channel of himself by real-time detection traffic performance, thereby makes network side and UE side form the good advantages complementation.This be because: network side can obtain load state information, but be difficult to obtain actual traffic performance, and the UE side can be monitored traffic performance in real time, but can't obtain load state information, therefore, described second method can further improve the resource utilization and the professional efficiency of transmission of system.
Below the present invention is described in detail for two example two:
Embodiment one:
First kind of method of selecting uplink transport channel that present embodiment provides the invention described above is the method that enhanced ue is selected uplink transport channel by network side just, is elaborated.
As previously mentioned, in the first method provided by the present invention, be to be that described enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed of the business of described enhanced ue and priority by network side, specifically:
Can set in advance high speed thresholding, low guaranteed speed thresholding, high priority thresholding and the low priority thresholding of guaranteeing; The described high speed thresholding that guarantees is greater than described low guaranteed speed thresholding, and described high priority thresholding is greater than the low priority thresholding;
And carrying out following following principle when channel is selected:
The enhanced ue of single signaling bear business is configured in RACH;
For single professional enhanced ue, the assurance speed of business is configured in E-DCH greater than the described high enhanced ue that guarantees that speed thresholding and priority are higher than described high priority thresholding, the assurance speed of business is configured in RACH less than the enhanced ue that described low guaranteed speed thresholding and priority are lower than described low priority thresholding;
For compound professional enhanced ue, when the assurance speed of a business in the described compound business greater than described high when guaranteeing that speed thresholding and priority are higher than described high priority thresholding, described enhanced ue is configured in E-DCH, when the assurance speed of all business in the described compound business all is lower than described low priority thresholding less than described low guaranteed speed thresholding and priority, described enhanced ue is configured in RACH.
Above-mentionedly can comprise need carry out channel configuration for described enhanced ue the time: receive when RRC sets up request, receive when RAB (RAB) is set up request or when receiving the RAB removal request.
Below in conjunction with accompanying drawing, the present embodiment method is elaborated by a concrete flow example.
Fig. 4 is a schematic flow sheet of selecting the method for uplink transport channel in the embodiment of the invention one.Referring to Fig. 4, this method is carried out by network side, particularly, can be carried out by radio network controller (RNC).Among Fig. 4:
R
G_hRepresent that the described height that sets in advance guarantees the speed thresholding;
R
G_lRepresent the described low guaranteed speed thresholding that sets in advance;
P
Cc_E-DCHRepresent the described high priority thresholding that sets in advance;
P
Cc_RACHRepresent the described low priority thresholding that sets in advance;
R represents that the business of described enhanced ue guarantees speed;
P represents the service priority of described enhanced ue.
Method shown in Figure 4 comprises:
Step 401: set up request when RNC receives RRC, when RAB sets up request or RAB removal request, continue execution in step 402.
Step 402: judge whether the UE corresponding with described request of receiving is enhanced ue, if enhanced ue then continues execution in step 403; If not enhanced ue, method ends flow process then, or carry out other relevant treatment according to prior art.
Step 403:RNC judges whether described request of receiving is that RRC sets up request, if RRC sets up request, then this enhanced ue is configured in RACH, and the method ends flow process; If not RRC sets up request, then continue execution in step 404.
Step 404:RNC judges whether described request of receiving is single professional relevant request, if single professional relevant request then continues execution in step 405; If not single professional relevant request then continues execution in step 407.
Step 405: judge described single business P＞P that whether satisfies condition
Cc_E-DCHAnd R＞R
G_hIf,, then this enhanced ue is configured on the E-DCH, and the method ends flow process; If not, then continue execution in step 406.
Step 406: judge described single business P＜P that whether satisfies condition
Cc_RACHAnd R＜R
G_lIf,, then this enhanced ue is configured on the RACH, and the method ends flow process; If not, method ends flow process then, perhaps, if set in advance other criterions, here, also can continue to judge according to other criterions, or adopt other RRMs (RRM) algorithm to handle, until selected suitable uplink transport channel for enhanced ue.
The execution sequence of above-mentioned steps 405 and step 406 can be changed.
Step 407～408:, show that then what receive is the relevant request of composite services, in step 407～408, needs to judge in the composite services whether have the P＞P that satisfies condition if what judge in the step 404 that RNC receives is not single professional relevant request
Cc_E-DCHAnd R＞R
G_hBusiness, if exist, then this enhanced ue is configured on the E-DCH, and the method ends flow process; If do not exist, then continue execution in step 409.
Among Fig. 4, k represents that the business that comprises in the described composite services is total, and i is used for the business of described composite services is counted.
Step 409～410: judge in the composite services, whether all business P＜P that all satisfies condition
Cc_RACHAnd R＜R
G_lIf,, then this enhanced ue is configured on the RACH, and the method ends flow process; If not, then the method ends flow process perhaps, if set in advance other criterions, here, also can continue to judge according to other criterions, or adopt other RRM algorithms to handle, until selected suitable uplink transport channel for enhanced ue.
Above-mentioned steps 407～408 can be changed with the execution sequence of step 409～410.
So far, finish to select in the embodiment of the invention one method of uplink transport channel.
Embodiment two:
Present embodiment is elaborated to second kind of method with the third selection uplink transport channel that the invention described above provides.Wherein, be that enhanced ue selects the embodiment of uplink transport channel to have been described in detail in embodiment one about network side in the second method, therefore, present embodiment is selected the method for uplink transport channel emphatically from angle explanation the present invention of enhanced ue side.
As previously mentioned, in the method by enhanced ue selection uplink transport channel provided by the invention, periodically select uplink transport channel according to current arrival rate and the buffer memory that carries out business by enhanced ue, specifically:
Can set in advance arrival rate thresholding, buffer memory thresholding and channel selection cycle;
And when carrying out the channel selection, carry out in the following manner:
Starting timing length is the timer of described channel selection cycle;
When described timer expiry, if professional arrival rate greater than described arrival rate thresholding or buffer memory greater than described buffer memory thresholding, then select E-DCH, otherwise, select RACH;
Restart the timer that described timing length is described channel selection cycle.
Said method is before UE carries out described periodicity channel selection, and can comprise: enhanced ue judges whether network side is its selection and has disposed uplink transport channel, if do not have, enhanced ue need be selected initial uplink transport channel voluntarily, and concrete grammar is:
Set in advance the initial rate thresholding;
Before business is carried out, the size of the initial rate thresholding of the initial rate of more described business and described setting is if the initial rate of described business then selects E-DCH as uplink transport channel greater than the initial rate thresholding of described setting, otherwise, select RACH as uplink transport channel.
More than relate to the calculating of the initial rate of professional arrival rate, buffer memory and business, concrete computational methods are as follows:
1) arrival rate of business of the present invention is the speed sum of each logic channel Radio Link control (RLC) layer of this enhanced ue, is designated as R
Sum, R
SumEmbodied professional rate requirement own, can calculate according to formula (1):
Wherein, R
Sum(t) expression rlc layer Mean Speed sum;
R
Sum(t) expression rlc layer momentary rate sum;
T
cThe expression window filtering factor.
2) buffer memory of the present invention is each logic channel buffer memory sum, is designated as BO
Sum(t).
3) initial rate of business of the present invention is the period T that sets in advance
0In, the Mean Speed of this each rlc layer of enhanced ue is designated as R
Sum(0).Wherein, described if T
0What be provided with is oversize, will increase professional time-delay, if T is set
0Must be too short, it is inaccurate then to cause initial rate to be measured, and preferably, can make the T of described setting
0Less than the described channel selection cycle that sets in advance.
In the said method, the new uplink transport channel of selecting may be different from the professional current uplink transport channel of using (being designated hereinafter simply as current uplink transport channel), at this moment, need to change uplink transport channel, this will need enhanced ue to insert at random on new uplink transport channel.Consider that each E-PUCH transmission comprises that repeatedly HARQ retransmits, in order to guarantee network side medium access control (MAC) submitting according to the order of sequence to rlc layer, after each enhanced ue changes uplink transport channel, after must waiting until that current uplink transport channel is sent completely, could begin the relevant MAC of new transmission channel and insert request, that is to say: when changing uplink transport channel, the transmission buffer status of MAC-e and MAC-c should be sky.
Similarly, if carry out receiving in the process network channels configuration messages in business, after needing then to wait until that current uplink transport channel is sent completely, just can restart the timer that described timing length is described channel selection cycle, and channel appointed is set to uplink transport channel in the described channel configuration message.
More than relate to and how to judge whether current uplink transport channel is sent completely, particularly:
1) if current uplink transport channel is E-DCH, then described current uplink transport channel is sent completely and is meant: receive that mixed HARQ ACK or the last data transmission block that sends corresponding to the last data transmission block that sends reach maximum retransmission.If the HARQ that the last data transmission block of E-DCH is not received that ACK replys and do not finished maximum times retransmits, (PHY-ACCESS-REQ) primitive is asked in the physics access that could begin MAC-c after then UE must wait until ACK or reaches the HARQ maximum retransmission.
2) if current uplink transport channel is RACH, then described current uplink transport channel is sent completely and is meant: after sending uplink synchronous code (Syn_UL), the transmission on Physical Random Access Channel (PRACH) resource that is associated with physical access channel (FPACH) in Preset Time is finished.When if the E-DCH cycle begins, MAC-c has sent PHY-ACCESS-REQ primitive and has come initialization PRACH transport process, but do not receive that also FPACH replys, receiving perhaps that FPACH replys does not also send data, after transmission on the PRACH resource that then must receive FPACH by the time and be associated with FPACH is finished, could begin the process of transmitting of E-RUCCH; Perhaps when physical layer in a power climbs the scope of the maximum Syn_UL the number of transmissions that the cycle allowed, on FPACH, do not receive a confirmation of synchronization, could begin the process of transmitting of E-RUCCH.MAC-c no longer sends PHY-ACCESS-REQ primitive.
If when RACH is begun uplink as current uplink transport channel, that is: when the RACH cycle begins, current last E-DCH transmission is sent completely, then close the T-WAIT timer that has started, stop and the relevant physical layer uplink synchronous random access procedure of enhanced uplink random access channel E-RUCCH, and judge whether to start the T-RUCCH timer, if start, then judge whether before the T-RUCCH timer expired, to receive authorization message, if receive, then should authorize still effective, can in authorization resources, send data retransmission and last new data, after T-RUCCH is overtime, carry out following operation:
If last E-DCH transmission is finished, then close this T-RUCCH timer, and with the N_RUCCH zero clearing, the E-AGCH mandate of receiving in the cycle at RACH subsequently is all invalid, the relevant access procedure of beginning RACH;
If last E-DCH transmission does not also reach maximum retransmission, then resend SI, carry the re-transmission buffer data size among the TEBS in SI, and restart the T_RUCCH timer, current E-DCH retransmits or SI transmission number of times reaches N_RUCCH until finishing, the E-AGCH mandate of receiving in the cycle at RACH subsequently is all invalid, the relevant access procedure of beginning RACH.
Above-mentioned T-WAIT timer is that MAC course physical layer sends the timer that inserts the startup of request back at random, if UE receives that the network side accidental access response then stops this timer; If this timer expired is not also received accidental access response, then MAC course physical-layer retransmission inserts request at random.
Above-mentioned T-RUCCH timer is the timer that starts after UE successfully sends uplink bandwidth request (SI), and UE stops timing after receiving the resource authorization of network; If also receiving, UE then do not resend SI by resource authorization when this timer expired.
Below in conjunction with accompanying drawing, the present embodiment method is elaborated by a concrete flow example.
Fig. 5 is a schematic flow sheet of selecting the method for uplink transport channel in the embodiment of the invention two.Referring to Fig. 5, this method is carried out by enhanced ue, among Fig. 5:
R
Sum(0) the professional initial rate of expression;
R
Sum(t) the professional constantly arrival rate of expression t;
R
0Represent the described initial rate thresholding that sets in advance;
T
Cc_periodThe channel selection cycle that expression sets in advance;
R
Cc_E-ECHThe arrival rate thresholding that expression sets in advance;
BO
Cc_E-ECHThe buffer memory thresholding that expression sets in advance;
BO
SumThe buffer memory of expression current time.
Method shown in Figure 5 comprises:
Step 501: when enhanced ue begins professional the transmission under the CELL_FACH state, start timer.
In this step, the professional transmission of described beginning is exactly the transmission that begins Dedicated Traffic Channel (DTCH) or Dedicated Control Channel (DCCH).
Judge by timer mode whether current time is the beginning of a new channel selection cycle in the present embodiment, that is: the continuous timing of timer, if timer present timing constantly (being designated as t) shows then that for the integral multiple of the channel selection cycle that sets in advance current time is the beginning of a new channel selection cycle.In actual applications, can realize also that the timer that timing length is described channel selection cycle promptly is set, and timer expiry is represented the beginning of a new channel selection cycle by the mode of timer, timer restarts timing then.
Step 502: whether judge network side for this enhanced ue has disposed the initial uplink transmission channel, if, then continue execution in step 503, otherwise, execution in step 504 continued.
Step 503: judge the initial channel type, if E-DCH then continues execution in step 505, otherwise, continue execution in step 517.
Step 504: judge professional initial rate R
Sum(0) whether greater than the initial rate thresholding R that sets in advance
0, if greater than, then continue execution in step 505, otherwise, execution in step 517 continued.
Step 505: E-DCH as transmission channel, is carried out uplink.
Step 506: as the timing duration t of timer is the channel selection cycle T that sets in advance
Cc_periodIntegral multiple the time, continue execution in step 507, otherwise, continue E-DCH to carry out uplink as transmission channel.
Step 507: the arrival rate R that judges the current time business
Sum(t) whether greater than the arrival rate thresholding R that sets in advance
Cc_E-ECH, if greater than, then continue E-DCH to carry out uplink as transmission channel, otherwise, execution in step 508 continued.
Step 508: the buffer memory BO that judges current time
SumWhether greater than the buffer memory thresholding BO that sets in advance
Cc_E-ECH, if greater than, then continue E-DCH to carry out uplink as transmission channel, otherwise, execution in step 509 continued.
The execution sequence of above-mentioned steps 507 and step 508 can be changed.
Step 509: so far, channel type need be adapted for RACH by E-DCH, judges at first whether E-DCH is sent completely, if, then continue execution in step 510, otherwise, execution in step 515 continued.
In this step, judge method that whether E-DCH is sent completely is to judge whether the MAC-e buffer memory is empty,, show that then transmission finishes if empty, otherwise, send and do not finish.
Step 510:, then close this T-WAIT timer if started the T-WAIT timer.
Step 511: if carrying out the Syn_UL process of an E-RUCCH, then stop this process, that is: stop the physical layer Syn_UL process of E-RUCCH.
The execution sequence of above-mentioned steps 510 and step 511 can be changed.
Step 512: judge when the RACH cycle begins, whether started timer T_RUCCH, do not start, then begin the PRACH process of transmitting, enter step 517 if; If start T_RUCCH, then continue execution in step 513.
Step 513: judge whether T_RUCCH receives the resource authorization of E-AGCH before overtime, if receive, then continues execution in step 514, otherwise, stop the re-transmission of SI, enter step 517.
Step 514: on authorization resources, send last new data, enter step 516.
Step 515: send E-DCH data retransmission and last new data in the cycle at RACH.
Step 516: after in current channel selection cycle, finishing last E-DCH transmission, beginning PRACH process of transmitting, channel-changing is RACH, continues execution in step 517.
Step 517: RACH as transmission channel, is carried out uplink.
Step 518: as the timing duration t of timer is the channel selection cycle T that sets in advance
Cc_periodIntegral multiple the time, continue execution in step 519, otherwise, continue RACH to carry out uplink as transmission channel.
Step 519: the arrival rate R that judges the current time business
Sum(t) whether less than the arrival rate thresholding R that sets in advance
Cc_E-ECH, and the buffer memory BO of current time
SumWhether less than the buffer memory thresholding BO that sets in advance
Cc_E-ECHIf,, then continue RACH to carry out uplink as transmission channel, otherwise, execution in step 520 continued.
Step 520: channel type becomes E-DCH by RACH, continue the relevant Syn_UL process of ongoing PRACH, but MAC-c stops to send PHY-ACCESS-REQ, continues execution in step 505, beginning E-DCH transmission.
So far, finish to select in the embodiment of the invention two method of uplink transport channel.
As seen from the above technical solution, the enhanced ue for being under the CELL_FACH state that the present invention proposes is selected in the method for uplink transport channel, support E-DCH and RACH as uplink transport channel simultaneously by the enhanced ue that sets in advance under the CELL_FACH state, make the spendable uplink transport channel of enhanced ue that is under the CELL_FACH state be not limited only to E-DCH, thereby make priority is lower, speed the is lower business can be at suitable transmission channel---send on the RACH channel, and then realized RACH and the allotment of E-DCH reasonable resources.
Provided by the invention by network side according to the assurance speed of the business of enhanced ue with priority is selected for this enhanced ue and the method for collocating uplink transmission channel, and carry out the method that professional arrival rate and buffer memory are periodically selected uplink transport channel according to current by enhanced ue, owing to carrying out uplink transport channel when selecting or based on the qos requirement of business or based on the traffic performance of real-time detection, therefore, described two kinds of methods all can realize RACH and the allotment of E-DCH reasonable resources.
In addition, in the method that said method is combined that the present invention proposes, network side requires to be enhanced ue transmission uplink transport channel by QoS of survice, enhanced ue is then independently adjusted the uplink transport channel of himself by real-time detection traffic performance, thereby make network side and UE side form the good advantages complementation, make the selection of uplink transport channel carry out based on load state information and real-time monitoring traffic performance information, therefore, can further improve the resource utilization and the professional efficiency of transmission of system.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1, a kind of method of selecting uplink transport channel is used to the enhanced user equipment UE that is under the CELL_FACH state to select uplink transport channel, it is characterized in that, comprising:
The enhanced ue that sets in advance under the CELL_FACH state supports to strengthen dedicated channel E-DCH and Random Access Channel RACH simultaneously;
When needs carried out channel configuration for described enhanced ue, network side was that described enhanced ue is selected and the collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue.
2, method according to claim 1 is characterized in that, further sets in advance high speed thresholding, low guaranteed speed thresholding, high priority thresholding and the low priority thresholding of guaranteeing; The described high speed thresholding that guarantees is greater than described low guaranteed speed thresholding, and described high priority thresholding is greater than the low priority thresholding;
Described network side is that described enhanced ue is selected and the collocating uplink transmission channel comprises according to the assurance speed and the priority of the business of described enhanced ue:
The enhanced ue of single signaling bear business is configured in RACH;
For single professional enhanced ue, the assurance speed of business is configured in E-DCH greater than the described high enhanced ue that guarantees that speed thresholding and priority are higher than described high priority thresholding, the assurance speed of business is configured in RACH less than the enhanced ue that described low guaranteed speed thresholding and priority are lower than described low priority thresholding;
For compound professional enhanced ue, when the assurance speed of a business in the described compound business greater than described high when guaranteeing that speed thresholding and priority are higher than described high priority thresholding, described enhanced ue is configured in E-DCH, when the assurance speed of all business in the described compound business all is lower than described low priority thresholding less than described low guaranteed speed thresholding and priority, described enhanced ue is configured in RACH.
3, method according to claim 2 is characterized in that:
Describedly comprise need carry out channel configuration for described enhanced ue the time: receive when radio resource control RRC is set up request, receive when RAB RAB sets up request or when receiving the RAB removal request.
4, method according to claim 3 is characterized in that, after receiving described request, further comprises:
Network side is judged described request of receiving, if being RRC, described request of receiving sets up request, then described enhanced ue is configured in RACH, otherwise the described network side of continuation execution is that described enhanced ue is selected the also operation of collocating uplink transmission channel according to the assurance speed and the priority of the business of described enhanced ue.
5, according to each described method of claim 1 to 4, it is characterized in that, network side according to the assurance speed of the business of described enhanced ue and priority be described enhanced ue select and the collocating uplink transmission channel after, further comprise:
In the middle of business was carried out, described enhanced ue was periodically selected uplink transport channel according to the arrival rate and the buffer memory of described business.
6, a kind of method of selecting uplink transport channel is used to the enhanced user equipment UE that is under the CELL_FACH state to select uplink transport channel, it is characterized in that, comprising:
The enhanced ue that sets in advance under the CELL_FACH state supports to strengthen dedicated channel E-DCH and Random Access Channel RACH simultaneously;
In the middle of business was carried out, the enhanced ue under the described CELL_FACH of the being in state was periodically selected uplink transport channel according to current arrival rate and the buffer memory that carries out business.
7, method according to claim 6 is characterized in that, goes in the choice after the transmission channel, further comprises:
Whether the uplink transport channel of judging described selection identical with the professional current current uplink transport channel of using, if inequality, then after current uplink transport channel is sent completely, with the uplink transport channel of described selection as current uplink transport channel.
8, method according to claim 7 is characterized in that, further sets in advance the initial rate thresholding;
Before described business is carried out, further comprise: described enhanced ue judges whether network side is its selection and has disposed uplink transport channel, if do not have, the size of the initial rate thresholding of the initial rate of more described business and described setting then, if the initial rate of described business is greater than the initial rate thresholding of described setting, then select E-DCH as uplink transport channel, otherwise, select RACH as uplink transport channel.
9, according to each described method of claim 6 to 8, it is characterized in that, further set in advance arrival rate thresholding, buffer memory thresholding and channel selection cycle;
Enhanced ue under the described CELL_FACH of the being in state periodically selects uplink transport channel to comprise according to current arrival rate and the buffer memory that carries out business:
Starting timing length is the timer of described channel selection cycle;
When described timer expiry, if professional arrival rate greater than described arrival rate thresholding or buffer memory greater than described buffer memory thresholding, then select E-DCH, otherwise, select RACH;
Restart the timer that described timing length is described channel selection cycle.
10, method according to claim 9 is characterized in that, this method further comprises:
If in business is carried out, receive the network channels configuration messages, then after current uplink transport channel is sent completely, restart described timer, and channel appointed is set to uplink transport channel in the described channel configuration message.
11, method according to claim 10 is characterized in that:
If current uplink transport channel is E-DCH, then described current uplink transport channel is sent completely and is meant: receive that mixed automatic repeat requests response message HARQ ACK or the last data transmission block that sends corresponding to the last data transmission block that sends reach maximum retransmission;
If current uplink transport channel is RACH, then described current uplink transport channel is sent completely and is meant: after sending uplink synchronous code Syn_UL, transmission on the Physical Random Access Channel PRACH resource that is associated with physical access channel FPACH in Preset Time is finished, perhaps when physical layer in a power that has begun climbs the scope of the defeated number of times of maximum Syn_UL that the cycle allowed, on FPACH, do not receive a confirmation of synchronization.
12, method according to claim 11 is characterized in that, this method further comprises:
If when RACH is begun uplink as current uplink transport channel, current last E-DCH transmission is sent completely, then close the T-WAIT timer that started, stop and the relevant physical layer uplink synchronous random access procedure of enhanced uplink random access channel E-RUCCH, and judge whether to start the T-RUCCH timer, if start, then judge whether before the T-RUCCH timer expired, to receive authorization message, if receive, then in authorization resources, send data retransmission and last new data; If before the T-RUCCH timer, do not receive resource authorization, then carry out following operation:
If last E-DCH transmission is finished, then close this T-RUCCH timer, and with the N_RUCCH zero clearing, the E-AGCH mandate of receiving in the cycle at RACH subsequently is all invalid, the relevant access procedure of beginning RACH;
If last E-DCH transmission does not also reach maximum retransmission, then resend SI, carry the re-transmission buffer data size among the TEBS in SI, and restart the T_RUCCH timer, current E-DCH retransmits or SI transmission number of times reaches N_RUCCH until finishing, the E-AGCH mandate of receiving in the cycle at RACH subsequently is all invalid, the relevant access procedure of beginning RACH.
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| CN200810113787 | 2008-05-30 | ||
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| CN102711216A (en) * | 2012-05-08 | 2012-10-03 | 中国联合网络通信集团有限公司 | Transmission resource selection method, user equipment, determining method and access network equipment |
| CN102740495A (en) * | 2011-04-02 | 2012-10-17 | 华为技术有限公司 | Random access method, terminal equipment and communication system |
| WO2013044497A1 (en) * | 2011-09-30 | 2013-04-04 | Nokia Corporation | Selection between random access and dedicated scheduling request resources |
| CN103109506A (en) * | 2010-05-18 | 2013-05-15 | Lg电子株式会社 | Method in which a group of terminals receives a downlink control channel, and method in which the terminals make requests for bandwidth in a wireless communication system in which the same stid or c-rnti is allocated to the group of terminals |
| CN103220718A (en) * | 2012-01-20 | 2013-07-24 | 中兴通讯股份有限公司 | Up data transmission method and device |
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| SE0400341D0 (en) * | 2004-02-13 | 2004-02-13 | Ericsson Telefon Ab L M | Direct transition to cell DCH |
| CN101174886B (en) * | 2006-10-30 | 2011-06-15 | 华为技术有限公司 | Method, system and user's set for setting transmission time spacing of reinforced special channel |
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| CN103109506A (en) * | 2010-05-18 | 2013-05-15 | Lg电子株式会社 | Method in which a group of terminals receives a downlink control channel, and method in which the terminals make requests for bandwidth in a wireless communication system in which the same stid or c-rnti is allocated to the group of terminals |
| CN103109506B (en) * | 2010-05-18 | 2016-08-24 | Lg电子株式会社 | Described in the wireless communication system to one group of same STID or C-RNTI of terminal distribution, one group of terminal receives method and the method for described terminal request bandwidth of downlink control channel |
| CN102740495A (en) * | 2011-04-02 | 2012-10-17 | 华为技术有限公司 | Random access method, terminal equipment and communication system |
| CN102740495B (en) * | 2011-04-02 | 2016-01-06 | 华为技术有限公司 | The method of Stochastic accessing, terminal equipment and communication system |
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| US9439209B2 (en) | 2011-09-30 | 2016-09-06 | Nokia Technologies Oy | Selection between random access and dedicated scheduling request resources |
| CN103220718A (en) * | 2012-01-20 | 2013-07-24 | 中兴通讯股份有限公司 | Up data transmission method and device |
| CN102711216A (en) * | 2012-05-08 | 2012-10-03 | 中国联合网络通信集团有限公司 | Transmission resource selection method, user equipment, determining method and access network equipment |
| GB2502128A (en) * | 2012-05-17 | 2013-11-20 | Renesas Mobile Corp | Uplink resource selection based on service type |
| CN104581976A (en) * | 2015-01-30 | 2015-04-29 | 江苏中航伟业电子科技发展有限公司 | Method for multiple terminals to access to mobile communication system |
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