CN101547497B - Method, system and device for triggering random accessing - Google Patents
Method, system and device for triggering random accessing Download PDFInfo
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Abstract
The invention discloses a method for random accessing. A first indicating area used for triggering a terminal to carry out a first operation is arranged in a physical downlink control channel (PDCCH) format, wherein the first operation is random accessing operation or operation needed by normal uplink and downlink dispatching. The method comprises the steps as follows: a base station eNB sends the PDCCH format for arranging the first indication area to the terminal; the terminal analyzes the received PDCCH format; whether the first operation corresponding to the first indicating area is the random accessing operation or not, if so, the terminal is triggered to carry out the random accessing operation, and if else, the terminal is triggered to carry out the operation needed by the normal uplink and downlink dispatching. The invention also discloses a system, the base station and the terminal for random accessing. By adopting the invention, the OoS of the terminal can be improved, and the blank of communication protocol is filled up.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method, system and device that a kind of triggering inserts at random.
Background technology
At present, main two kinds of random access procedures, promptly competitive random access procedure and the uncompetitive random access procedure of existing in Long Term Evolution plan (LTE:Long Term Evolution) system.Wherein, carry out the reason of competitive random access procedure, have following five kinds to trigger reasons usually: first kind, be used for UE and carry out RRC and connect the initial access of setting up process for triggering terminal (UE); Second kind, be used for the initial access that UE carries out RRC connection reconstruction process; The third, UE is in handoff procedure; The 4th kind, the downlink data that is used for carrying out at UE the uplink synchronous process arrives network side; The 5th kind, be used for carrying out the arrival network side of the upstream data of uplink synchronous process at UE.As seen, when UE is in above-mentioned five kinds of reasons any, can triggers UE and carry out competitive random access procedure.And for triggering the reason that UE carries out uncompetitive random access procedure, then be only applicable to above-mentioned the third and trigger reason with the 4th kind.
Generally, in the prior art, after the data of down direction arrive network side, network side is in order to transmit this data to the UE that is in connection status, at first need to understand the current state of UE, if UE is current to be in the uplink synchronous state or UE has the available SR resource that is used for resource bid, then network can directly carry out descending scheduling to UE; Otherwise network triggers UE by Physical Downlink Control Channel (PDCCH) signaling and carries out uncompetitive random access procedure, and wherein, in this PDCCH signaling, network side distributes special-purpose targeting sequencing (preamble) resource to give UE, specifically as shown in Figure 1.In Fig. 1, if need triggering UE by the PDCCH signaling, network carries out uncompetitive random access procedure, then comprise following flow process:
Wherein, if the downlink data at a plurality of UE arrives network side simultaneously in same sub-district, then network side distributes the preamble resource of the special use of corresponding above-mentioned each UE, and therefore, the preamble resource of the special use of this moment is a set.
Wherein, the above-mentioned access at random asks to insert at random for uncompetitive.
As seen, distribute special-purpose preamble resource can to trigger UE for UE by network side in the prior art and carry out uncompetitive random access procedure.Yet, in real network, if when taking place simultaneously in the same sub-district to arrive at the downlink data of more a plurality of UE, perhaps, when network side distributes special-purpose preamble resource size to surpass the set sizes of dedicated preamble, this scheme existing problems of prior art, such as, when network side distributes special-purpose preamble resource size to surpass the set sizes of dedicated preamble, network side again can not distribute special-purpose preamble resource to give UE, like this, if also exist UE to need network side to distribute special-purpose preamble resource, after then network side must wait for that some dedicated preamble resources are recovered, could continue to distribute this dedicated preamble resource to give UE, carry out process step shown in Figure 1.Like this, the triggering terminal of will delaying time is initiated the operation of access at random, influences the service quality (QoS) of terminal.
Summary of the invention
The embodiment of the invention discloses method, system and a kind of base station and a kind of terminal that a kind of triggering inserts at random, so that eliminate the time-delay that triggering terminal is initiated access operation at random.
The method that a kind of triggering inserts at random, the first indication territory is set in the physical downlink control channel PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and the expression triggering terminal is carried out second sign of normal up-downgoing scheduling action required; This method comprises:
A, base station are provided with the currency in the first indication territory in the current PDCCH form according to current service needed, and current PDCCH form is sent to terminal;
The current PDCCH form that B, end-on are received is resolved;
C, judge that the currency in the first indication territory described in the current PDCCH form is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
Preferably, this method further comprises: the second indication territory is set in the PDCCH form, and the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression;
In the described steps A, before current PDCCH form is sent to terminal, further comprise: the base station is provided with the currency in the second indication territory in the current PDCCH form according to current service needed;
In step C, the step that access operation is at random carried out in described triggering comprises: the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random.
Preferably, the special use indication territory of the described first indication territory in the PDCCH form, setting up; Perhaps for the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory.
Preferably, the described second indication territory for the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory; Perhaps indicate the territory for the special use of setting up at the PDCCH form.
Preferably, described first sign comprises that expression has first bit value of competing access operation at random and second bit value of representing uncontested access operation at random;
In step C, be first bit value in first sign if judge described in the current PDCCH form currency in the first indication territory, then trigger and carry out competitive access operation at random; If judge described in the current PDCCH form currency in the first indication territory and be second bit value in first sign, then trigger and carry out uncompetitive access operation at random.
Preferably, the described first indication territory is the special use indication territory of 1 bit for the length of setting up in the PDCCH form; Perhaps for the PDCCH form in the indication territory that has been provided with carry out the indication territory of multiplexing length greater than 1 bit.
Preferably, the described first sign expression triggers and carries out competitive access operation at random;
In step C,, then trigger and carry out competitive access operation at random if the currency in the first indication territory described in the current PDCCH form is first sign.
The system that a kind of triggering inserts at random comprises: base station and terminal; Wherein,
Described base station, be used for the first indication territory being set at the physical downlink control channel PDCCH form, the value in this first indication territory comprises that expression triggers first sign that described terminal is carried out access operation at random, and expression triggers second sign that described terminal is carried out normal up-downgoing scheduling action required; And be used for according to current service needed, the currency in the first indication territory in the current PDCCH form is set, current PDCCH form is sent to terminal;
Described terminal is used for the current PDCCH form that receives is resolved; And the currency of judging described in the current PDCCH form the first indication territory is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
A kind of base station comprises: first is provided with unit and transmitting element; Wherein,
Described first is provided with the unit, be used for the first indication territory being set at the physical downlink control channel PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and expression triggers second sign that UE carries out normal up-downgoing scheduling action required; And be used for according to current service needed, the currency in the first indication territory in the current PDCCH form is set;
Described transmitting element is used for current PDCCH form is sent to terminal.
Preferably, this base station further comprises: second is provided with the unit;
Described second is provided with the unit, is used at the PDCCH form the second indication territory being set, and the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression; And be used for according to current service needed, the currency in the second indication territory in the current PDCCH form is set;
Described transmitting element is used for indicating the current PDCCH form of the currency in territory to send to terminal the currency and second that the first indication territory is set.
A kind of terminal comprises: resolution unit and judging unit; Wherein,
Described resolution unit, the currency that is used for the first indication territory of current physical downlink control channel PDCCH form that the base station is sent is resolved;
Described judging unit, the currency that is used to judge the first indication territory described in the current PDCCH form are still second sign of first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
Preferably, described resolution unit, be used in the base station according to current service needed, when the currency in the second indication territory in the current PDCCH form was set, the currency in the first indication territory in the current PDCCH form that the base station is sent and the currency in the second indication territory were resolved;
Described judging unit, be used for when the currency of judging the first indication territory described in the current PDCCH form is first sign, the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random.
Preferably, described judging unit is used for when first sign comprises that expression has first bit value of competing access operation at random and represents second bit value of uncontested access operation at random, if judge described in the current PDCCH form currency in the first indication territory and be first bit value in first sign, then trigger and carry out competitive access operation at random; If judge described in the current PDCCH form value in the first indication territory and be second bit value in first sign, then trigger and carry out uncompetitive access operation at random.
Preferably, described judging unit is used for triggering when carrying out competitive access operation at random in the first sign expression, whether the currency of judging the first indication territory described in the current PDCCH form is first sign, if trigger and carry out competitive access operation at random.
From such scheme as can be seen, present embodiment of the present invention is by being provided with the first indication territory in the PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and the expression triggering terminal is carried out second sign of normal up-downgoing scheduling action required.Like this, the base station is provided with the currency in the first indication territory in the current PDCCH form according to current service needed, and current PDCCH form is sent to terminal; Afterwards, the current PDCCH form of end-on receipts is resolved; And the currency of judging described in the current PDCCH form the first indication territory is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign, then trigger and carry out the operation that normal up-downgoing dispatching office needs, can avoid the operation of the preamble resource of network side distribution special use in the prior art, and then eliminated the downlink data that when network side distributes special-purpose preamble resource size to surpass the set sizes of dedicated preamble, increases time delay end to end, improve the QoS of UE.
Further, the embodiment of the invention also can be by being provided with the second indication territory in the PDCCH form, the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression, realized that triggering UE according to this second indication territory carries out competitive access operation at random or uncompetitive access operation at random, has filled up the blank of communication protocol.
Description of drawings
Fig. 1 triggers the flow chart that UE carries out uncompetitive random access procedure for prior art;
Fig. 2 is the method flow diagram that inserts at random in the embodiment of the invention;
Fig. 3 (a) to Fig. 3 (d) be the schematic diagram of PDCCH form in the present embodiment;
Fig. 4 is a kind of structural representation of base station in the embodiment of the invention;
Fig. 5 is a kind of structural representation of terminal in the embodiment of the invention;
Embodiment
Consider that the base station can be by the corresponding operation of PDCCH signaling triggering UE execution, as uncompetitive access operation at random or competitive access operation at random.In the embodiment of the invention, by the first indication territory is set in the PDCCH form, the value in this first indication territory comprises that the expression triggering terminal carries out first sign of access operation at random, and the expression triggering terminal is carried out second sign of normal up-downgoing scheduling action required.Like this, the base station is provided with the currency in the first indication territory in the current PDCCH form according to current service needed, and current PDCCH form is sent to terminal; Afterwards, the current PDCCH form of end-on receipts is resolved; The currency of judging the first indication territory described in the current PDCCH form is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs, eliminated the time-delay of the operation that the triggering terminal initiation inserts at random in the prior art, improve the QoS of terminal.
In addition, can there be various ways in the above-mentioned first indication territory, as the special use indication territory of setting up in the PDCCH form; Perhaps be: carry out multiplexing indication territory etc. with the indication territory that has been provided with in the PDCCH form.
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
Referring to Fig. 2, Fig. 2 is the method flow diagram that inserts at random in the embodiment of the invention.In the present embodiment, the first indication territory is set in the PDCCH form, the value in this first indication territory comprises that the expression triggering terminal carries out first sign of access operation at random, and the expression triggering terminal is carried out second sign of normal up-downgoing scheduling action required.Wherein, the operation that the up-downgoing dispatching office needs specifically is meant: the operation that operation that descending scheduling is required and uplink scheduling are required; Wherein, required operation is meant the downlink data that receives the PDSCH channel on the downlink resource of appointment for descending scheduling; Required operation is meant the upstream data that sends the PUCCH channel at the ascending resource of appointment for uplink scheduling.As shown in Figure 2, this flow process may further comprise the steps:
Present LTE conclusion is: when downlink data arrives, but carry out uncompetitive access operation at random with PDCCH signaling triggering terminal.Therefore, for making the embodiment of the invention that wider range of application be arranged, this method also can be provided with the second indication territory in the PDCCH form, the value in this second indication territory can comprise that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression.Like this, above-mentioned steps 201 can be: the base station is provided with the currency in the first indication territory in the current PDCCH form and the currency in the second indication territory according to current service needed, then, current PDCCH form is sent to terminal.
In the present embodiment, if will being set in the above-mentioned steps 201, the currency and second in the first indication territory indicate the current PDCCH form of the currency in territory to send to terminal, the step that access operation is at random carried out in above-mentioned triggering can comprise: the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random.And then realized that correct differentiation triggers the purpose of the operation of competitive access operation at random, uncompetitive access operation at random and normal up-downgoing dispatching office need.
The above-mentioned first indication territory can be the special use indication territory of setting up in the PDCCH form; Perhaps for the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory.Wherein, the length in special-purpose indication territory can be 1 bit, also can be at least one bit; Also can be with the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory, as can be with the PDCCH form in be provided with be used to indicate the indication territory of resource allocation information to carry out multiplexing indication territory, also can be with the PDCCH form in be provided with be used to indicate the indication territory of special leader sequence assignment information to carry out multiplexing indication territory in equal length.
In addition, the above-mentioned second indication territory can be with the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory; Perhaps indicate the territory for the special use of setting up at the PDCCH form.Below only with in the PDCCH form, be provided with above-mentioned first the indication territory and second the indication territory be that example is described the PDCCH form in the present embodiment.Referring to Fig. 3 (a) to Fig. 3 (d), Fig. 3 (a) to Fig. 3 (d) be the schematic diagram of PDCCH form in the present embodiment.
Shown in Fig. 3 (a), in Fig. 3 (a), the above-mentioned first indication territory is: indicating the indication territory of resource allocation information multiplexing with being used to of being provided with in the PDCCH form is the indication territory of 3 bits in length.And the second indication territory is: the special use indication territory that the special length that is provided with is 1 bit in the PDCCH form.
Wherein, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and expression triggers second sign that UE carries out normal up-downgoing scheduling action required.When be " 000 ", representative is the PDCCH form of access at random as the value in the first indication territory; In the first indication territory value during for other values except that " 000 ", representative execution up-downgoing dispatching office need the PDCCH form of operation.The value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression.Such as, when the value in this second indication territory is " 0 ", triggers and carry out uncontested access operation at random; When the value in this second indication territory is " 1 ", triggers to carry out and compete access operation at random.Like this, the base station as the state current according to UE, is provided with the currency in the first indication territory in the current PDCCH form and the currency in the second indication territory according to current service needed; Should send to terminal by current PDCCH form then.After process above-mentioned steps 202, currency according to this first indication territory, the currency of judging the first indication territory described in the current PDCCH form is still second sign of first sign, if second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs; Otherwise, trigger and carry out access operation at random.Wherein, triggering is carried out access operation at random and can be comprised: the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of the 3rd sign, if the 3rd sign, then competitive access operation is at random carried out in triggering; If the 4th sign then triggers and carries out uncompetitive access operation at random.
Shown in Fig. 3 (b), the above-mentioned first indication territory and the second indication territory also can be respectively that the length that is provided with in the PDCCH form is the special use indication territory of 1 bit.Like this, the base station as the state current according to UE, is provided with the currency in the first indication territory in the current PDCCH form and the currency in the second indication territory according to current service needed; Should send to terminal by current PDCCH form then.After process above-mentioned steps 202, currency according to this first indication territory, the currency of judging the first indication territory described in the current PDCCH form is still second sign of first sign, if second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs; Otherwise, trigger and carry out access operation at random.Wherein, triggering is carried out access operation at random and can be comprised: the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of the 3rd sign, if the 3rd sign, then competitive access operation is at random carried out in triggering; If the 4th sign then triggers and carries out uncompetitive access operation at random.Such as, when the value in this first indication territory is " 0 ", triggers and carry out the operation that the up-downgoing dispatching office needs; When the value in this first indication territory is " 1 ", trigger the operation that inserts at random.If first of above-mentioned terminal execution is operating as the operation that inserts at random, then determine second operation that terminal is carried out according to the currency in the above-mentioned second indication territory, such as, when this currency was " 0 ", uncontested access operation was at random carried out in triggering; When this currency is " 1 ", triggers to carry out and compete access operation at random.
Among Fig. 3 (c), at first, the above-mentioned first indication territory is that the length that is provided with in the PDCCH form is the special use indication territory of 1 bit.And the second indication territory be can be with the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory.Be specially, with be provided with in the PDCCH form be used to indicate the multiplexing indication territory of special leader sequence assignment information in equal length, like this, the base station is according to current service needed, as the state current, the currency in the first indication territory in the current PDCCH form and the currency in the second indication territory are set according to UE; Should send to terminal by current PDCCH form then.Through after the above-mentioned step 202, terminal is determined the currency in the above-mentioned first indication territory, judge according to this currency and trigger the operation of carrying out, when be " 0 " as the currency in this first indication territory, trigger carry out the up-downgoing dispatching office need operation; When the currency in this first indication territory is " 1 ", trigger the operation that inserts at random.If what above-mentioned terminal was carried out first is operating as the operation that inserts at random, the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random, such as, when the currency in this second indication territory is " complete 0 ", triggers and carry out uncontested access operation at random; When this bit field value is not " complete 0 ", triggers to carry out and compete access operation at random, at this moment, this second indication territory also can be carried special-purpose targeting sequencing information simultaneously.
In the embodiment of the invention, if above-mentioned first sign comprises that expression has first bit value of competing access operation at random and second bit value of representing uncontested access operation at random, then in step 203, if judge described in the current PDCCH form currency in the first indication territory and be first bit value in first sign, then trigger and carry out competitive access operation at random; If judge described in the current PDCCH form currency in the first indication territory and be second bit value in first sign, then trigger and carry out uncompetitive access operation at random, specifically referring to as Fig. 3 (d).
Shown in Fig. 3 (d), it is the first indication territory of 2 bits that length is set in the PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and expression triggers second sign that UE carries out normal up-downgoing scheduling action required, wherein, this first sign comprises that expression has first bit value of competing access operation at random and second bit value of representing uncontested access operation at random.Like this, in above-mentioned steps 201, the base station is according to current service needed, the currency in the first indication territory in the current PDCCH form is set, current PDCCH form is sent to terminal, then, after process step 202, terminal is judged the operation that triggers execution according to the currency in the first indication territory in this current PDCCH form, when being " 00 " as this value, triggering and carries out uncontested access operation at random; When this value is " 01 ", triggers to carry out and compete access operation at random; When this value is " 10 " or " 11 ", triggers and carry out the operation that the up-downgoing dispatching office needs.
In addition, in the prior art, still there is not a kind of triggering terminal to carry out the competitive operation scheme that inserts at random.In the embodiment of the invention, in order to realize that triggering UE carries out the competitive operation that inserts at random, the first sign expression is triggered the competitive access operation at random of execution, like this, the base station is according to current service needed, the currency in the first indication territory in the current PDCCH form is set, current PDCCH form is sent to terminal, execution in step 202 afterwards, in step 203, if the currency in the first indication territory described in the current PDCCH form is first sign, then triggers and carry out competitive access operation at random.In this case, the above-mentioned first indication territory can be the special use indication territory of 1 bit for the length that is provided with in the PDCCH form; Perhaps be: carry out the indication territory of multiplexing length greater than 1 bit with other bit informations that will indicate that have been provided with in the PDCCH form.
The method that triggering in the corresponding present embodiment inserts at random, the system that the triggering in the present embodiment inserts at random can comprise: terminal and base station.Base station in this enforcement, be used for the first indication territory being set at the PDCCH form, the value in this first indication territory comprises that expression triggers first sign that described terminal is carried out access operation at random, and expression triggers second sign that described terminal is carried out normal up-downgoing scheduling action required; And be used for according to current service needed, the currency in the first indication territory in the current PDCCH form is set, current PDCCH form is sent to terminal; Described terminal is used for the current PDCCH form that receives is resolved; And the currency of judging described in the current PDCCH form the first indication territory is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
During specific implementation, can there be multiple version the base station, and Fig. 4 shows a kind of structural representation of base station.As shown in Figure 4, this base station comprises: first is provided with unit 401 and transmitting element 402.
Wherein, first is provided with unit 401 is used at the PDCCH form the first indication territory being set, the value in this first indication territory comprises that expression triggers first sign that UE carries out access operation at random, and expression triggers second sign that UE carries out normal up-downgoing scheduling action required; And be used for according to current service needed, the currency in the first indication territory in the current PDCCH form is set.
Transmitting element 402 is used for current PDCCH form is sent to terminal.
This base station can further comprise: second is provided with unit 403.
Wherein, second is provided with unit 403 is used at the PDCCH form the second indication territory being set, and the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression; And be used for according to current service needed, the currency in the second indication territory in the current PDCCH form is set.
Transmitting element 402 is used for indicating the current PDCCH form of the currency in territory to send to terminal the currency and second that the first indication territory is set.
Wherein, first is provided with unit 401, second is provided with unit 403 and transmitting element 402 in the specific implementation, can trigger the implementation step unanimity of describing in the accidental access method in the present embodiment, gives unnecessary details no longer one by one herein.
During specific implementation, terminal can have multiple version, and Fig. 5 shows a kind of structural representation of terminal.This terminal comprises: resolution unit 501 and judging unit 502.
Wherein, the resolution unit 501 current physical downlink control channel PDCCH form that is used for the currency that the first indication territory is set that the base station is sent is resolved.
Judging unit 502 is used to judge that the currency in the first indication territory described in the current PDCCH form is still second sign of first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
Wherein, resolution unit 501 is used in the base station according to current service needed, when the currency in the second indication territory in the current PDCCH form is set, indicate the current PDCCH form of the currency in territory to resolve to the currency that the first indication territory is set and second that the base station sends.
Judging unit 502 is used for when the currency of judging the first indication territory described in the current PDCCH form is first sign, the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random.
In addition, judging unit 502 is used for when first sign comprises that expression has first bit value of competing access operation at random and represents second bit value of uncontested access operation at random, if judge described in the current PDCCH form currency in the first indication territory and be first bit value in first sign, then trigger and carry out competitive access operation at random; If judge described in the current PDCCH form value in the first indication territory and be second bit value in first sign, then trigger and carry out uncompetitive access operation at random.
In addition, judging unit 502 is used in the first sign expression and triggers when carrying out competitive access operation at random, whether the currency of judging the first indication territory described in the current PDCCH form is first sign, if trigger and carry out competitive access operation at random.
In the embodiment of the invention, the specific operation process of terminal and each unit of inside of base station can be consistent with the operation described in the method flow shown in Figure 2, and each unit can be the physical function unit, it also can be SFU software functional unit, and each unit also can segment or merge, during specific implementation, those of ordinary skills can handle according to actual conditions, enumerate no longer one by one herein.
As seen, present embodiment is by being provided with the first indication territory in the PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and expression triggers second sign that UE carries out normal up-downgoing scheduling action required, like this, the base station is provided with the currency in the first indication territory in the current PDCCH form according to current service needed, and current PDCCH form is sent to terminal; The current PDCCH form that end-on is received is resolved; Afterwards, the currency of judging the first indication territory described in the current PDCCH form is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign, then trigger and carry out the operation that normal up-downgoing dispatching office needs, the downlink data that the elimination prior art has increased when the special-purpose preamble resource size of network side distribution has surpassed the set sizes of dedicated preamble is time delay end to end, and then improves the QoS of UE.
Further, the embodiment of the invention also can be by being provided with the second indication territory in the PDCCH form, the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression, realized that triggering UE according to this second indication territory carries out competitive access operation at random or uncompetitive access operation at random, has filled up the blank of communication protocol.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is preferred embodiment of the present invention; be not to be used to limit protection scope of the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. method that triggering inserts at random, it is characterized in that, the first indication territory is set in the physical downlink control channel PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and the expression triggering terminal is carried out second sign of normal up-downgoing scheduling action required; This method comprises:
A, base station are provided with the currency in the first indication territory in the current PDCCH form according to current service needed, and current PDCCH form is sent to terminal;
The current PDCCH form that B, end-on are received is resolved;
C, judge that the currency in the first indication territory described in the current PDCCH form is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
2. method according to claim 1, it is characterized in that, this method further comprises: the second indication territory is set in the PDCCH form, the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression;
In the described steps A, before current PDCCH form is sent to terminal, further comprise: the base station is provided with the currency in the second indication territory in the current PDCCH form according to current service needed;
In step C, the step that access operation is at random carried out in described triggering comprises: the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random.
3. method according to claim 1 is characterized in that, the special use indication territory of the described first indication territory for setting up in the PDCCH form; Perhaps for the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory.
4. method according to claim 2 is characterized in that, the described second indication territory for the PDCCH form in the indication territory that has been provided with carry out multiplexing indication territory; Perhaps indicate the territory for the special use of setting up at the PDCCH form.
5. method according to claim 1 is characterized in that, described first sign comprises that expression has first bit value of competing access operation at random and second bit value of representing uncontested access operation at random;
In step C, be first bit value in first sign if judge described in the current PDCCH form currency in the first indication territory, then trigger and carry out competitive access operation at random; If judge described in the current PDCCH form currency in the first indication territory and be second bit value in first sign, then trigger and carry out uncompetitive access operation at random.
6. method according to claim 1 is characterized in that, the described first indication territory is the special use indication territory of 1 bit for the length of setting up in the PDCCH form; Perhaps for the PDCCH form in the indication territory that has been provided with carry out the indication territory of multiplexing length greater than 1 bit.
7. according to claim 1 or 6 described methods, it is characterized in that the described first sign expression triggers carries out competitive access operation at random;
In step C,, then trigger and carry out competitive access operation at random if the currency in the first indication territory described in the current PDCCH form is first sign.
8. the system that triggering inserts at random is characterized in that, this system comprises: base station and terminal; Wherein,
Described base station, be used for the first indication territory being set at the physical downlink control channel PDCCH form, the value in this first indication territory comprises that expression triggers first sign that described terminal is carried out access operation at random, and expression triggers second sign that described terminal is carried out normal up-downgoing scheduling action required; And be used for according to current service needed, the currency in the first indication territory in the current PDCCH form is set, current PDCCH form is sent to terminal;
Described terminal is used for the current PDCCH form that receives is resolved; And the currency of judging described in the current PDCCH form the first indication territory is still second sign of described first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
9. a base station is characterized in that, comprising: first is provided with unit and transmitting element; Wherein,
Described first is provided with the unit, be used for the first indication territory being set at the physical downlink control channel PDCCH form, the value in this first indication territory comprises that expression triggering terminal UE carries out first sign of access operation at random, and expression triggers second sign that UE carries out normal up-downgoing scheduling action required; And be used for according to current service needed, the currency in the first indication territory in the current PDCCH form is set;
Described transmitting element is used for current PDCCH form is sent to terminal.
10. base station according to claim 9 is characterized in that, this base station further comprises: second is provided with the unit;
Described second is provided with the unit, is used at the PDCCH form the second indication territory being set, and the value in this second indication territory comprises that the expression execution has the 3rd sign of competing access operation at random, and the 4th sign of uncontested access operation is at random carried out in expression; And be used for according to current service needed, the currency in the second indication territory in the current PDCCH form is set;
Described transmitting element is used for indicating the current PDCCH form of the currency in territory to send to terminal the currency and second that the first indication territory is set.
11. a terminal is characterized in that, this terminal comprises: resolution unit and judging unit; Wherein,
Described resolution unit, the currency that is used for the first indication territory of current physical downlink control channel PDCCH form that the base station is sent is resolved;
Described judging unit, the currency that is used to judge the first indication territory described in the current PDCCH form are still second sign of first sign, if first sign then triggers and carries out access operation at random; If second sign then triggers and carries out the operation that normal up-downgoing dispatching office needs.
12. terminal according to claim 11, it is characterized in that, described resolution unit, be used in the base station according to current service needed, when the currency in the second indication territory in the current PDCCH form is set, the currency in the first indication territory in the current PDCCH form of base station transmission and the currency in the second indication territory are resolved;
Described judging unit, be used for when the currency of judging the first indication territory described in the current PDCCH form is first sign, the currency of judging the second indication territory described in the current PDCCH form is still the 4th sign of described the 3rd sign, if the 3rd sign then triggers and carries out competitive access operation at random; If the 4th sign then triggers and carries out uncompetitive access operation at random.
13. terminal according to claim 11, it is characterized in that, described judging unit is used for when first sign comprises that expression has first bit value of competing access operation at random and represents second bit value of uncontested access operation at random, if judge described in the current PDCCH form currency in the first indication territory and be first bit value in first sign, then trigger and carry out competitive access operation at random; If judge described in the current PDCCH form value in the first indication territory and be second bit value in first sign, then trigger and carry out uncompetitive access operation at random.
14. terminal according to claim 11, it is characterized in that, described judging unit is used for triggering when carrying out competitive access operation at random in the first sign expression, whether the currency of judging the first indication territory described in the current PDCCH form is first sign, if trigger and carry out competitive access operation at random.
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| CN102264052B (en) * | 2010-05-28 | 2014-10-08 | 中国移动通信集团公司 | Method, device and system for triggering terminal communication at network side |
| CN106332261B (en) | 2015-06-23 | 2019-07-09 | 中兴通讯股份有限公司 | Compete transmission method and device |
| CN108809493B (en) * | 2017-05-05 | 2022-06-24 | 中兴通讯股份有限公司 | Information sending and receiving method, device, equipment and storage medium |
| CN117715231A (en) * | 2017-10-30 | 2024-03-15 | 北京小米移动软件有限公司 | Random access method and device |
| CN112866935A (en) * | 2019-01-02 | 2021-05-28 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
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