CN104838717A - Method and device for random access - Google Patents
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- CN104838717A CN104838717A CN201380001462.9A CN201380001462A CN104838717A CN 104838717 A CN104838717 A CN 104838717A CN 201380001462 A CN201380001462 A CN 201380001462A CN 104838717 A CN104838717 A CN 104838717A
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- 230000011664 signaling Effects 0.000 claims abstract description 57
- 230000004044 response Effects 0.000 claims abstract description 36
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
The invention relates to a method and device for random access. The method comprises: the user equipment (UE) receives a first random access trigger signaling sent by a network side, and the first random access trigger signaling carries a first guide; the UE using a first sending power sends the first guide; when the UE does not receive the response information of the first guide sent by the network side and do receive a second random access trigger signaling carrying a second guide sent by the network side, the UE using a second sending power sends the second guide, and the second sending power is greater than the first sending power. The success rate of random access can be improved by applying the method and device for random access provided by the invention.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and apparatus of Stochastic accessing.
Background technology
Stochastic accessing (random access, RA) process is used for setting up subscriber equipment (user equipment, UE) with base station (such as, evolved base station e-NB) uplink synchronous, by configure in systems in which for using Physical Random Access Channel (physical random access channel in the sub-frame of uplink of Stochastic accessing, PRACH) random access guiding (preamble) is sent, and receive accidental access response (the random access response of base station feedback, RAR), uplink synchronous is realized.Stochastic accessing comprises competition Stochastic accessing and non-competing Stochastic accessing two kinds of patterns.
Please refer to Fig. 1, it is the signal flow graph of a kind of non-competing random access procedure of prior art, and as shown in the figure, non-competing random access procedure comprises the steps:
100:e-NB is that UE distribution RA is leading;
It is that the RA that it distributes is leading that 102:UE sends e-NB;
104:e-NB receive UE send RA leading after, feedback RAR.
In the process of above Stochastic accessing, if UE fails to receive the RAR of base station feedback, then UE can increase transmitted power, resend this random access guiding, and when reaching maximum retransmission, if also do not receive corresponding RAR, then this random access failure.
In addition, if it is that the RA that it distributes is leading that UE fails to receive e-NB, then UE initiatively cannot initiate Stochastic accessing, causes random access failure.
At present, the probability of random access failure is still higher, needs to be reduced further.
Summary of the invention
Embodiment of the present invention object is, provides a kind of method and apparatus of Stochastic accessing, can improve the success rate of Stochastic accessing.
In order to solve the problems of the technologies described above, according to the first aspect of the embodiment of the present invention, embodiments provide a kind of method of Stochastic accessing, comprising:
User equipment (UE) receives the first Stochastic accessing that network side sends and triggers signaling, and described first Stochastic accessing triggers signaling and carries first leading;
Described UE sends described first leading with the first transmitted power;
When described UE do not receive described first leading response message that network side sends and described UE receive that network side sends carry second leading the second Stochastic accessing trigger signaling time, described UE sends described second leading with the second transmitted power, described second transmitted power is greater than described first transmitted power.
As the first possible implementation of described first aspect, differ positive integer power doubly between described second transmitted power with described first transmitted power and walk.
In conjunction with the first possible implementation of described first aspect or described first aspect, additionally provide the implementation that the second of described first aspect is possible, before the second leading second Stochastic accessing triggers signaling to described UE carrying of receiving that network side sends, also comprise: described UE initiates described first leading re-transmission, and the transmitted power retransmitted is greater than described first transmitted power.
In conjunction with the implementation that the second of described first aspect is possible, additionally provide the third possible implementation of described first aspect, described UE initiates described first leading re-transmission, comprise: transmission described first leading after, described UE does not receive the described first leading response message that network side sends in Preset Time, then described UE is based on the first transmitted power, by least one power step size of transmitted power lifting; Described first leading re-transmission is initiated with the transmitted power after lifting.
In conjunction with the third possible implementation of described first aspect, additionally provide the 4th kind of possible implementation of described first aspect, after described UE initiates first time described first leading re-transmission, initiate again described first leading re-transmission at least one times, wherein, described UE initiate the condition that retransmits for: after the first leading re-transmission described in last time, the described first leading response message that described UE does not receive in Preset Time that network side sends; And from second time retransmits, before each re-transmission, described UE, based on the transmitted power retransmitted last time, by least one power step size of transmitted power lifting, and initiates each re-transmission with the transmitted power after lifting.
In conjunction with the second, the third or the 4th kind of possible implementation of described first aspect, additionally provide the 5th kind of possible implementation of described first aspect, described UE sends described second leading with secondary signal transmitted power, comprise: after the last re-transmission of initiation, described UE does not receive the described first leading response message that network side sends in Preset Time, and described UE receives described second Stochastic accessing and triggers signaling, then described UE is based on the transmitted power retransmitted for the last time, by least one power step size of transmitted power lifting; Send described second leading with the transmitted power after lifting.
According to the second aspect of the embodiment of the present invention, embodiments provide a kind of accidental access device, comprising:
Receiving element, the first Stochastic accessing sent for receiving network side triggers signaling, and described first Stochastic accessing triggers signaling and carries first leading;
Access unit, described first leading for sending with the first transmitted power;
Described receiving element, also for when not receiving the described first leading response message that network side sends, second leading the second Stochastic accessing that carries receiving that network side sends triggers signaling;
Described access unit, also described second leading for sending with the second transmitted power, described second transmitted power is greater than described first transmitted power.
As the first possible implementation of described second aspect, between described second transmitted power with described first transmitted power, differ positive integer power step size doubly.
In conjunction with the first possible implementation of described second aspect or described second aspect, additionally provide the implementation that the second of described second aspect is possible, described device also comprises: trigger element, for receiving trigger power lifting unit before described second Stochastic accessing triggers signaling at described receiving element; With power lifting unit, for carrying out the process of lifting transmitted power; Described access unit, also for initiating described first leading re-transmission with the transmitted power after the lifting of described power lifting unit.
In conjunction with the implementation that the second of described second aspect is possible, additionally provide the third possible implementation of described second aspect, described trigger element specifically for: described access unit send described first leading after, if described receiving element does not receive the described first leading response message that network side sends in Preset Time, then trigger described power lifting unit; Described power lifting unit specifically for: based on the first transmitted power, by least one power step size of transmitted power lifting; Described access unit specifically for, initiate described first leading re-transmission with the transmitted power after lifting.
In conjunction with the third possible implementation of described second aspect, additionally provide the 4th kind of possible implementation of described second aspect, after described access unit initiates first time described first leading re-transmission: described trigger element is concrete also for triggering described power lifting unit at least one times, and the condition that described trigger element triggers described power lifting unit for: after the first leading re-transmission described in the last time that described access unit is initiated, the described first leading response message that described receiving element does not receive in Preset Time that network side sends; Described power lifting unit concrete also for: based on the transmitted power retransmitted last time, by least one power step size of transmitted power lifting; Described access unit specifically for, initiate each re-transmission with the transmitted power after lifting.
In conjunction with the second, the third or the 4th kind of possible implementation of described second aspect, additionally provide the 5th kind of possible implementation of described second aspect, described trigger element also for: after the last re-transmission of described access unit, if described receiving element does not receive the described first leading response message that network side sends in Preset Time, and described receiving element receives described second Stochastic accessing and triggers signaling, then trigger described power lifting unit; Described power lifting unit also for: based on the transmitted power that described access unit retransmits for the last time, by least one power step size of transmitted power lifting; Described access unit specifically for: send described second leading with the transmitted power after the lifting of described power lifting unit.
Compared with prior art, the success rate that embodiment provided by the present invention can improve Stochastic accessing is implemented.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the signal flow graph of a kind of non-competing random access procedure of prior art;
Fig. 2 is the schematic flow sheet of the accidental access method according to an embodiment of the present invention;
Fig. 3 is the block schematic diagram of the accidental access device according to an embodiment of the present invention;
Fig. 4 is the block schematic diagram of the accidental access device according to an embodiment of the present invention;
Fig. 5 is the block schematic diagram of the accidental access device according to an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Consider in prior art, e-NB is that UE distributes leading order and only sends once, if this order is lost, then UE initiatively can not initiate Stochastic accessing, causes random access failure.For this reason, e-NB can be set and resend once for UE distributes leading order, again access to trigger UE.
But when UE receives the order that e-NB resends, UE can continue original random access procedure, also can again initiate new Stochastic accessing.Such as, UE is not when receiving the RAR of e-NB feedback, the transmitted power that risen resends random access guiding, now, have received again the order that new distribution that e-NB issues is leading, if UE uses carry in the leading order of new distribution leading again to initiate Stochastic accessing, so soaring power starts to add up again, because power reason e-NB can continue to can not receive leading, cause random access failure; If UE continues original random access procedure, send old leading, due to leading ageing, e-NB can not respond old leading and issue RAR, causes random access failure equally.
For this reason, in following examples, when UE receive that e-NB resends distribute leading order for UE time, UE keeps continuing based on power soaring in original random access procedure or power soaring in original random access procedure soaring, and uses e-NB to be the leading initiation Stochastic accessing that it is redistributed.So, the probability of the random access failure caused because of power reason can be reduced, also solve due to the leading ageing random access failure problem caused meanwhile.
Fig. 2 is the schematic flow sheet of the method for Stochastic accessing according to an embodiment of the present invention, and with reference to Fig. 2, the method comprises:
200: subscriber equipment (UE) receives the first Stochastic accessing that network side sends and triggers signaling, and described first Stochastic accessing triggers signaling and carries first leading.
Exemplary, described first Stochastic accessing triggers signaling and can comprise: network side initiatively triggers the signaling of Stochastic accessing, such as, and Physical Downlink Control Channel (PDCCH) signaling, the switching command for switching that e-NB sends, or MAC layer signaling.
202: described UE send with the first transmitted power described first leading.
Exemplary, described first transmitted power can be pre-configured initial transmission power, and can be the transmitted power by determining methods such as channel quality estimation, the embodiment of the present invention do any restriction to this yet.
204: when described UE do not receive described first leading response message that network side sends and described UE receive that network side sends carry second leading the second Stochastic accessing trigger signaling time, described UE sends described second leading with the second transmitted power, described second transmitted power is greater than described first transmitted power, such as: differ positive integer power step size doubly between described second transmitted power with described first transmitted power.
Those skilled in the art are to be understood that, the first Stochastic accessing mentioned in the present invention triggers signaling and the second Stochastic accessing and triggers the signaling that signaling can be same format, and the description of employing " first ", " second " is in the time or spatially distinguished to Stochastic accessing triggering signaling.Equally, first leading and second leading can be identical leading, also can be different leading, adopt " first ", the description of " second " is in the time or spatially distinguished to leading.
Optionally, in a kind of implementation of the present embodiment, before the second leading second Stochastic accessing triggers signaling to described UE carrying of receiving that network side sends, described UE also can initiate described first leading re-transmission, and the transmitted power retransmitted is greater than described first transmitted power.Such as: with first transmitted power send described first leading after, described UE does not receive the described first leading response message that network side sends in Preset Time, then described UE is based on the first transmitted power, by at least one power step size of transmitted power lifting, then initiate described first leading re-transmission with the transmitted power after lifting.Further, after described UE initiates first time described first leading re-transmission, described first leading re-transmission at least one times can also be initiated again, wherein, described UE initiate the condition that retransmits for: after the first leading re-transmission described in last time, the described first leading response message that described UE does not receive in Preset Time that network side sends; And from second time retransmits (that is: from the re-transmission after the first time that described UE initiates described first leading re-transmission), before each re-transmission, described UE is based on the transmitted power retransmitted last time, by at least one power step size of transmitted power lifting, and initiate each re-transmission with the transmitted power after lifting.
Optionally, in a kind of implementation of the present embodiment, after the last re-transmission of initiation, described UE does not receive the described first leading response message that network side sends in Preset Time, and described UE receives described second Stochastic accessing and triggers signaling, then described UE is based on the transmitted power retransmitted for the last time, by least one power step size of transmitted power lifting; Then send described second leading with the transmitted power after lifting.It should be noted that, the number of times restriction of the present embodiment to described first leading re-transmission comprises: directly limit number of retransmissions, or by the restriction interval time of adjacent twice re-transmission and the total time of retransmission process indirectly limit number of retransmissions.
It will be appreciated by those skilled in the art that carrying the second leading second Stochastic accessing triggers signaling and can regard that the first Stochastic accessing triggers the re-transmission of signaling as, and during this retransmits, carry leading can be different, also can be identical.Equally, after 204, if described second random access failure, then can carry out described second Stochastic accessing and trigger the re-transmission of signaling, and during this retransmits, carry leading can be different, also can be identical.Carry out power ramp further and carry out new random access procedure with the leading of renewal.
The method of the Stochastic accessing that the present embodiment provides, make UE in the process of Stochastic accessing, new Stochastic accessing can be adopted to trigger signaling (in the present embodiment, not only described second Stochastic accessing triggers signaling) in leading (but also being referred to as Special leader) of carrying (in the present embodiment, namely described second leading), adopt the signal transmitting power after riseing (in the present embodiment, i.e. described secondary signal transmitted power) instead of adopt initial power (in the present embodiment, i.e. described first signal transmitting power) initiate new Stochastic accessing, effectively improve the success rate of Stochastic accessing.
Trigger signaling for PDCCH order for Stochastic accessing, in the method for the Stochastic accessing according to an embodiment of the present invention, described method comprises:
What step 1:UE received that evolved base station e-NB issues carries the first leading PDCCH order, then adopt the first transmitted power, use first leadingly to carry out the first Stochastic accessing.Because transmitted power is lower, e-NB is not resolved to first leading, then e-NB can not send to UE and represent the successful response message of Stochastic accessing (such as: Random Access Response, RAR).
Step 2:UE initiation first Stochastic accessing Preset Time (such as, 10ms(millisecond)) after, based on the first transmitted power, used for the first leading first time retransmitted the first accidental access signal soaring for signal transmitting power 1 power step size, but e-NB is not still resolved to first leading.
Step 3:UE is after first time retransmits the Preset Time of the first accidental access signal, based on the first transmitted power, use the first leading second time to retransmit the first accidental access signal soaring for signal transmitting power 2 power step sizes, but e-NB is not still resolved to first leading.
Step 4, UE is after second time retransmits the Preset Time of the first accidental access signal, receive e-NB due to do not receive first leading and re-issue carry the second leading PDCCH order, then UE enables second leading and based on the first transmitted power, soaring for signal transmitting power 3 power step sizes are carried out the second Stochastic accessing.If power is enough, e-NB will successfully be resolved to second leading, and then sends to UE and represent the successful response message of Stochastic accessing; If underpower, the operation repeating to be similar to step 2 ~ 4 can be continued.
Fig. 3 is the block schematic diagram of the accidental access device according to an embodiment of the present invention, and with reference to Fig. 3, accidental access device 3 comprises receiving element 30 and access unit 32, is described respectively below.
Receiving element 30, the first Stochastic accessing sent for receiving network side triggers signaling, and described first Stochastic accessing triggers signaling and carries first leading.Exemplary, described first Stochastic accessing triggers signaling and can comprise: network side initiatively triggers the signaling of Stochastic accessing, such as, and Physical Downlink Control Channel (PDCCH) signaling, the switching command for switching that e-NB sends, or MAC layer signaling.
Access unit 32, described first leading for sending with the first transmitted power.
Receiving element 30, also for when not receiving the described first leading response message that network side sends, second leading the second Stochastic accessing that carries receiving that network side sends triggers signaling.
Access unit 32, also described second leading for sending with the second transmitted power, described second transmitted power is greater than described first transmitted power, such as: differ positive integer power step size doubly between described second transmitted power with described first transmitted power.
Optionally, in a kind of implementation of the present embodiment, described receiving element 30 is also for receiving the accidental access response that network side sends to described accidental access device 3.Such as: described access unit 32 send described second leading after, if network side (such as: e-NB) is successfully resolved to described second leading, then send accidental access response to described accidental access device 3.
The accidental access device 3 that the present embodiment provides effectively can improve the success rate of Stochastic accessing.
Fig. 4 is the block schematic diagram of the accidental access device according to an embodiment of the present invention, and with reference to Fig. 4, accidental access device 4 comprises receiving element 40, access unit 42, trigger element 44 and power lifting unit 46.Be described respectively below.
Receiving element 40 have embodiment illustrated in fig. 3 in the repertoire of receiving element 30.
Trigger element 44, for receiving trigger power lifting unit 46 before described second Stochastic accessing triggers signaling at described receiving element 30.
Power lifting unit 46, for carrying out the process of lifting transmitted power.
Access unit 42, except have embodiment illustrated in fig. 3 in access unit 32 repertoire except, also for initiating described first leading re-transmission with the transmitted power after the lifting of described power lifting unit 46.
Optionally, in a kind of implementation of the present embodiment:
Trigger element 44 specifically for: described access unit 42 send described first leading after, if described receiving element 40 does not receive the described first leading response message that network side sends in Preset Time, then trigger described power lifting unit 46;
Power lifting unit 46 specifically for: based on the first transmitted power, by least one power step size of transmitted power lifting;
Access unit 42 specifically for, initiate described first leading re-transmission with the transmitted power after lifting.
Further, after described access unit 42 initiates first time described first leading re-transmission:
Described trigger element 44 is concrete also for triggering described power lifting unit 46 at least one times, and the condition that described trigger element 44 triggers described power lifting unit 46 for: after the first leading re-transmission described in the last time that described access unit 42 is initiated, the described first leading response message that described receiving element 40 does not receive in Preset Time that network side sends;
Described power lifting unit 46 concrete also for: based on the transmitted power retransmitted last time, by least one power step size of transmitted power lifting;
Described access unit 42 specifically for, initiate each re-transmission with the transmitted power after lifting.
Optionally, in a kind of implementation of the present embodiment:
Described trigger element 44 also for: after the last re-transmission of described access unit 42, if described receiving element 40 does not receive the described first leading response message that network side sends in Preset Time, and described receiving element 40 receives described second Stochastic accessing and triggers signaling, then trigger described power lifting unit 46;
Described power lifting unit 46 now also for: based on the transmitted power that described access unit 42 retransmits for the last time, by least one power step size of transmitted power lifting;
Described access unit 42 now specifically for: send described second leading with the transmitted power after the lifting of described power lifting unit 46.
The accidental access device 4 that the present embodiment provides, the repeating transmission of Stochastic accessing at least one times can be carried out in the process of carrying out Stochastic accessing, and after signaling can being triggered at the Stochastic accessing receiving renewal, with soaring transmitted power, adopt upgrade leading to carry out Stochastic accessing, thus effectively improve the success rate of Stochastic accessing.
Fig. 5 is the block schematic diagram of the accidental access device according to an embodiment of the present invention, with reference to Fig. 5, accidental access device 5 comprises: receiver 51, transmitter 52, memory 53 and the processor 54 be connected with described receiver 51, transmitter 52 and memory 53, wherein, described memory 53 stores various program or application so that processor 54 calls thus realizes following functions:
Receive by described receiver 51 the first Stochastic accessing that network side sends and trigger signaling, described first Stochastic accessing triggers signaling and carries first leading;
Send described first leading with the first transmitted power by described transmitter 52;
When do not receive by described receiver 51 described first leading response message that network side sends and received by described receiver 51 that network side sends carry second leading the second Stochastic accessing trigger signaling time, send described second leading with the second transmitted power by described transmitter 52, described second transmitted power is greater than described first transmitted power, such as: differ positive integer power step size doubly between described second transmitted power with described first transmitted power.
Optionally, in a kind of implementation of the present embodiment, before the second leading second Stochastic accessing triggers signaling for carrying of being received by described receiver 51 that network side sends, described processor 54 also for: initiate described first leading re-transmission by described transmitter 52, and the transmitted power retransmitted is greater than described first transmitted power.Such as: sent by described transmitter 52 described first leading after, described accidental access device 5 does not receive described first leading response message by described receiver 51 in Preset Time, then described processor 54 is based on the first transmitted power, by at least one power step size of transmitted power lifting, then initiate described first leading re-transmission by described transmitter 52 with the transmitted power after lifting.Further, if first time described first leading re-transmission failure, then described processor 54 can initiate again described first leading re-transmission at least one times by described transmitter 52, now initiate the condition that retransmits for: after the first leading re-transmission described in last time, described accidental access device 5 in Preset Time not by described first leading response message that described receiver 51 receives that network side sends; And from second time retransmits, before each re-transmission, described processor 54, based on the transmitted power retransmitted last time, by least one power step size of transmitted power lifting, and initiates each re-transmission by described transmitter 52 with the transmitted power after lifting.
Optionally, in a kind of implementation of the present embodiment, after described processor 54 initiates last re-transmission by described transmitter 52, described accidental access device 5 does not receive described first leading response message by described receiver 51 in Preset Time, and described accidental access device 5 receives described second Stochastic accessing by described receiver 51 and triggers signaling, then described processor 54 is based on the transmitted power retransmitted for the last time, by at least one power step size of transmitted power lifting, then send described second leading with the transmitted power after lifting by described transmitter 52.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (12)
1. a method for Stochastic accessing, is characterized in that, described method comprises:
User equipment (UE) receives the first Stochastic accessing that network side sends and triggers signaling, and described first Stochastic accessing triggers signaling and carries first leading;
Described UE sends described first leading with the first transmitted power;
When described UE do not receive described first leading response message that network side sends and described UE receive that network side sends carry second leading the second Stochastic accessing trigger signaling time, described UE sends described second leading with the second transmitted power, described second transmitted power is greater than described first transmitted power.
2. method as claimed in claim 1, is characterized in that, differs positive integer power step size doubly between described second transmitted power with described first transmitted power.
3. method as claimed in claim 1 or 2, is characterized in that, before second leading the second Stochastic accessing triggers signaling to described UE carrying of receiving that network side sends, also comprises:
Described UE initiates described first leading re-transmission, and the transmitted power retransmitted is greater than described first transmitted power.
4. method as claimed in claim 3, is characterized in that, described UE initiates described first leading re-transmission, comprising:
Transmission described first leading after, described UE does not receive the described first leading response message that network side sends in Preset Time, then described UE is based on the first transmitted power, by least one power step size of transmitted power lifting;
Described first leading re-transmission is initiated with the transmitted power after lifting.
5. method as claimed in claim 4, is characterized in that, after described UE initiates first time described first leading re-transmission, initiates again described first leading re-transmission at least one times, wherein,
Described UE initiate the condition that retransmits for: after the first leading re-transmission described in last time, the described first leading response message that described UE does not receive in Preset Time that network side sends;
And from second time retransmits, before each re-transmission, described UE, based on the transmitted power retransmitted last time, by least one power step size of transmitted power lifting, and initiates each re-transmission with the transmitted power after lifting.
6. method according to any one of claim 3-5, is characterized in that, described UE sends described second leading with secondary signal transmitted power, comprising:
After the last re-transmission of initiation, described UE does not receive the described first leading response message that network side sends in Preset Time, and described UE receives described second Stochastic accessing and triggers signaling, then described UE is based on the transmitted power retransmitted for the last time, by least one power step size of transmitted power lifting;
Send described second leading with the transmitted power after lifting.
7. an accidental access device, is characterized in that, described device comprises:
Receiving element, the first Stochastic accessing sent for receiving network side triggers signaling, and described first Stochastic accessing triggers signaling and carries first leading;
Access unit, described first leading for sending with the first transmitted power;
Described receiving element, also for when not receiving the described first leading response message that network side sends, second leading the second Stochastic accessing that carries receiving that network side sends triggers signaling;
Described access unit, also described second leading for sending with the second transmitted power, described second transmitted power is greater than described first transmitted power.
8. device as claimed in claim 7, is characterized in that, differs positive integer power step size doubly between described second transmitted power with described first transmitted power.
9. device as described in claim 7 or 8, is characterized in that, described device also comprises:
Trigger element, for receiving trigger power lifting unit before described second Stochastic accessing triggers signaling at described receiving element, and
Power lifting unit, for carrying out the process of lifting transmitted power;
Described access unit, also for initiating described first leading re-transmission with the transmitted power after the lifting of described power lifting unit.
10. device as claimed in claim 9, is characterized in that:
Described trigger element specifically for: described access unit send described first leading after, if the described first leading response message that described receiving element does not receive in Preset Time that network side sends, then trigger described power lifting unit;
Described power lifting unit specifically for: based on the first transmitted power, by least one power step size of transmitted power lifting;
Described access unit specifically for, initiate described first leading re-transmission with the transmitted power after lifting.
11. devices as claimed in claim 10, is characterized in that, after described access unit initiates first time described first leading re-transmission:
Described trigger element is concrete also for triggering described power lifting unit at least one times, and the condition that described trigger element triggers described power lifting unit for: after the first leading re-transmission described in the last time that described access unit is initiated, the described first leading response message that described receiving element does not receive in Preset Time that network side sends;
Described power lifting unit concrete also for: based on the transmitted power retransmitted last time, by least one power step size of transmitted power lifting;
Described access unit specifically for, initiate each re-transmission with the transmitted power after lifting.
12. according to any one of claim 9-11 device, it is characterized in that: described trigger element also for: after the last re-transmission of described access unit, if described receiving element does not receive the described first leading response message that network side sends in Preset Time, and described receiving element receives described second Stochastic accessing and triggers signaling, then trigger described power lifting unit;
Described power lifting unit also for: based on the transmitted power that described access unit retransmits for the last time, by least one power step size of transmitted power lifting;
Described access unit specifically for: send described second leading with the transmitted power after the lifting of described power lifting unit.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110708750B (en) * | 2018-07-09 | 2021-06-22 | 华为技术有限公司 | Power adjustment method, terminal and storage medium |
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| US12144033B2 (en) | 2023-03-31 | 2024-11-12 | Beijing Xiaomi Mobile Software Co., Ltd. | Random access method and device, user equipment and computer-readable storage medium |
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