CN101615978A - Send, obtain the method and apparatus of user power allocation information - Google Patents
Send, obtain the method and apparatus of user power allocation information Download PDFInfo
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- CN101615978A CN101615978A CN200810067987A CN200810067987A CN101615978A CN 101615978 A CN101615978 A CN 101615978A CN 200810067987 A CN200810067987 A CN 200810067987A CN 200810067987 A CN200810067987 A CN 200810067987A CN 101615978 A CN101615978 A CN 101615978A
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Abstract
The present invention relates to the communications field, disclose a kind of method that sends user power allocation information.In this method, with user power allocation information add cover or scrambling control signaling on, send to subscriber equipment then.Like this, subscriber equipment can known the power allocation information of oneself to the control signaling when carrying out CRC check, so can be correct carry out data demodulates according to power allocation information.Adopt embodiment of the invention disclosed method, not only do not increase unnecessary signaling consumption; And, increase implementation complexity hardly because the CRC check complexity is very low.
Description
Technical field
The present invention relates to the communications field, send, obtain the method and apparatus of user power allocation information when particularly adopting the multiuser MIMO transmission.
Background technology
Along with development of Communication Technique, begin to occur MIMO (multiple input multiple output, multiple-input and multiple-output) technology.The MIMO technology can improve the transmission capacity of wireless communication system exponentially under the prerequisite that does not increase transmitting power and bandwidth; Also can make full use of the multipath transmission in the radio transmission, the availability of frequency spectrum and link reliability are greatly improved.
When in actual applications, the base station that possesses many antennas often needs and a plurality of user communicate.Therefore, the multiuser MIMO of point-to-multipoint (Multi-user MIMO) transmission is also just arisen at the historic moment.When adopting the multiuser MIMO transmission, the base station by do transmitting preliminary treatment (such as, precoding, beam shaping), to eliminate, to suppress the multiplexing interference that on same running time-frequency resource, causes of a plurality of users.
CRC (Cyclic Redundancy Code, cyclic redundancy code) is a kind of error check code commonly used in the data communication field.CRC check adopts the multinomial coding method, regards processed binary data information as a binary system multinomial t (x).During practical application, transmit leg and recipient are with same CRC generator polynomial g (x) (wherein, the coefficient of the first place of g (x) and last is necessary for 1).Transmit leg is removed t (x) with g (x), obtain remainder as the CRC check sign indicating number, and t (x) sends together.During recipient's verification, calculate the t (x) that receives and add the result of CRC check sign indicating number divided by g (x).If the result is 0, then the CRC check result is correct, and judgment data is correct the reception; If be not 0, CRC check erroneous results then, judgment data are wrong the reception.The exponent number of CRC generator polynomial is high more, and the probability of erroneous judgement is just more little.
In communication system, the base station is by sending up/information such as downlink resource distribution that descending control signaling is informed the user, and the user carries out the downlink data reception according to these information or upstream data sends.At present, at 3GPP (3rd Generation Partnership Project, third generation partner program) defined the CRC that LTE (Long Term Evolution, Long Term Evolution) system uplink/descending control signaling comprises that up/descending control messages and corresponding these control messages generate in the related protocol.Wherein, up/descending control messages be one group of base station and user appoint in advance implication by 0 and 1 sequence of forming, the information of carrying comprises uplink and downlink resource allocation, transmission mode, modulating-coding etc.The correctness of up/descending control messages reception that the CRC that corresponding these control messages generate then is used for verification.
Present 3GPP related protocol has defined the control signaling of multiuser MIMO transmission and has reused the control signaling that Single User MIMO transmits.Control signaling in the Single User MIMO transmission comprises DCI (Downlink control information, descending control messages) format 1B and DCI format 2, wherein the control signaling size of DCI format 1B is less than DCI format 2, and that agreement does not have clear and definite multiuser MIMO signaling to adopt among format 1B or the format 2 at present is any.
When multiuser MIMO transmits, suppose that multiuser MIMO number of users multiplexing on the running time-frequency resource is N, control so and issue separately control signaling (N altogether) together for when signaling needs when issuing this N multiplexing user, add the C-RNTI (Cell Radio Network Temporary Identifier, the interim label of cell-radio network) that covers (or scrambling) user respectively on the CRC of each control signaling.Add the C-RNTI that covers (scrambling) user and be for clear and definite this control messages at the user, prevent that other user is with the message of its erroneous judgement for oneself.Add and cover (or scrambling) and promptly do XOR (mould 2) computing by 0 and 1 sequence of forming to adding the information bit of covering (or scrambling) with what one group of base station and user appointed in advance.
When multiuser MIMO transmitted, the total transmitted power in base station need be distributed between a plurality of users of pairing mutually.Therefore, need the base station to notify each user's power division situation.Take to reuse the control signaling of the control signaling DCI format 2 of single user MOMO transmission in the prior art,, notify multi-user's power allocation information with the vacant bit among the DCI format 2 as the multiuser MIMO transmission.Wherein, the overhead bit of power division control information is
N wherein
MaxExpression can allow maximum multi-user's number (being commonly considered as the number of transmit antennas of base station) of matching.
The present inventor finds in realizing process of the present invention, and the power allocation information in the prior art during multiuser MIMO transmission utilizes among the DCI format 2 vacant bit to indicate.But, the present inventor notices and also can also vacate some bits among the DCI format 2 to not effect of multiuser MIMO transmission, and these no overhead bits can the increase system be controlled the expense of signaling along with the increase of users multiplexing number, and then influence the overall performance of multiuser MIMO transmission.
Summary of the invention
In view of this, the sending method and the device that the invention reside in transmission is provided, receive user power allocation information are in order to improve the multiuser MIMO transmission performances.
For achieving the above object, embodiments of the invention provide a kind of method that sends user power allocation information, and this method comprises:
With user power allocation information add cover or scrambling control signaling on;
Send described add cover or scrambling the control signaling of user power allocation information.
Embodiments of the invention also provide a kind of device that sends user power allocation information, and this device comprises:
Add and cover or scrambling unit, be used for user power allocation information add cover or scrambling control signaling;
Transmitting element, be used to send described add cover or scrambling the control signaling of user power allocation information.
Embodiments of the invention also provide a kind of method of obtaining user power allocation information, and this method comprises:
Reception add cover or scrambling the control signaling of user power allocation information;
Obtain to add and cover or the described user power allocation information of scrambling on described control signaling.
The embodiment of the invention also provides a kind of device that obtains user power allocation information, and this device comprises:
Receiving element, be used to receive add cover or scrambling the control signaling of user power allocation information;
Acquiring unit obtains to add and covers or the described user power allocation information of scrambling on described control signaling.
The transmission that the employing embodiment of the invention provides, the method and apparatus that obtains user power allocation information, multi-user's power allocation information added with the form of mask (or scrambler) cover (or scrambling) on the control signaling, can be so that the user of multiuser MIMO transmission be known the power allocation information of oneself in CRC check, and then the correct data demodulates of carrying out.
Description of drawings
Fig. 1 sends an embodiment schematic flow sheet of the method for user power allocation information for the present invention;
Fig. 2 sends another embodiment schematic flow sheet of the method for user power allocation information for the present invention;
Fig. 3 sends another embodiment schematic flow sheet of the method for user power allocation information for the present invention;
Fig. 4 obtains an embodiment schematic flow sheet of the method for user power allocation information for the present invention;
Fig. 5 sends an embodiment schematic flow sheet of the device of user power allocation information for the present invention;
Fig. 6 obtains an embodiment schematic flow sheet of the device of user power allocation information for the present invention.
Embodiment
The embodiment of the invention relates to the transmission of user power allocation information in the multiuser MIMO system for transmitting and obtains.In the embodiment of the invention,, user power allocation information covers (or scrambling) on the control signaling by being added with the form of mask (or scrambler), and can be so that the user of multiuser MIMO transmission be known the power allocation information of oneself in CRC check.Preferably, in the embodiment of the invention, user power allocation information added cover (or scrambling) on the control signaling of DCI format 1B form, when adopting the multiuser MIMO transmission means, can not increase unnecessary signaling consumption; And, increase implementation complexity hardly because the CRC check complexity is very low.
Below in conjunction with accompanying drawing embodiments of the invention are done to describe in further detail.
As shown in Figure 1, send an embodiment schematic flow sheet of the method for user power allocation information for the present invention.This method may further comprise the steps:
101, add CRC on the control messages.
In this step, on control messages, add the CRC that generates should control messages.
It will be understood by those skilled in the art that, when adopting the multiuser MIMO transmission, after adding CRC on the control messages, can also on CRC, add and cover (or scrambling) UE identity (User Equipmentidentity, customer equipment identification), in order to distinguish different users.Wherein, this UE identity can be C-RNTI (the interim label of Cell Radio Network Temporary Identifier cell-radio network).
102, on CRC, add and cover (or scrambling) power allocation information.
In this step, on the CRC of control information, add and cover (or scrambling) power allocation information, obtain comprising the control signaling of power allocation information.Wherein, add the power allocation information of covering (or scrambling) be certain rule, certain-length by 0 and 1 sequence of forming (comprising complete 0 or complete 1).Claim this sequence to cover (or scrambling) sequence for adding herein again.
It will be appreciated by persons skilled in the art that in the present embodiment that adding identification information and the power allocation information of covering (or scrambling) user on CRC does not have order qualification successively.
Below illustrate for a specific example and how on the CRC of control information, to add the information of covering (or scrambling) power division:
Suppose communication system bandwidth 20M, base station 4 transmit antennas, the control signaling format of employing DCI format 1B under the multiuser MIMO transmission means.Wherein, control messages is 32bit (bit) among the DCI format 1B, adds that the CRC of 16bit comes to 48bit.
Under the multiuser MIMO transmission means,, on the CRC of control messages, add the C-RNTI (that is: the C-RNTI XOR of the CRC of 16bit and 16bit obtains adding the CRC that has covered C-RNTI) of the 16bit that covers (or scrambling) user in order to distinguish different users.
The sequence of supposing the expression power allocation information is 16bit, maximum 2 users' of communication system support multiuser MIMO pairing, then can represent all base band powers of CU (the power division mode under single user's the situation) with 0000000000000000, with 0000000000000001 base band power (the power division mode under multi-user's the situation) of representing CU 1/2.At this moment, if maximum 4 users' of system's support multiuser MIMO pairing (adopt under the situation of 4 transmit antennas the base station) just needs 4 to add and cover sequence and represent the power division mode.Therefore, it will be appreciated by persons skilled in the art that adding the number of covering sequence equals the multiplexing maximum number of user of system's support.
The baseband transmission gross power of supposing the base station again is 1, and the number of users of multiplexing multiuser MIMO is 2 on a certain running time-frequency resource, and then each user respectively gets 1/2 transmitting power.At this moment, covered (or scrambling) in adding of each user and added the information 0000000000000001 of covering (or scrambling) power division on the CRC of C-RNTI again.
After receiving terminal (subscriber equipment) is finished the decoding of control signaling, need to attempt twice CRC check (because subscriber equipment does not know it oneself is single user or multiuser multiplexing) and know the power information of distributing to oneself: once remove and add (representing power allocation information) mask of covering on CRC with 0000000000000000, remove then and add (expression C-RNTI's) mask (also promptly directly removing mask) of covering on CRC with C-RNTI, obtain the CRC of receiving terminal, do CRC check again.Another time removed with 0000000000000001 and added (expression power allocation information) mask of covering on CRC, removes then to add (expression C-RNTI's) mask of covering on CRC, obtains the CRC of receiving terminal, does CRC check again.Which time obtains correct CRC check result, just judges that subscriber equipment is any power division mode, so just can be correct carry out data demodulates according to power allocation information.Such as, obtain correct check results when removing when adding (expression power allocation information) mask of covering on CRC, 1/2 the transmitting power of then having judged being assigned with of subscriber equipment with 0000000000000001.
103, send and to add the control signaling of power allocation information of having covered (or scrambling).
Control messages and add cover (or scrambling) CRC of power allocation information constitute and to add the control signaling of power allocation information of having covered (or scrambling).By will add cover (or scrambling) the control signaling of power allocation information send to the user, can be so that the user of multiuser MIMO transmission be known the power allocation information of oneself in CRC check, so can be correct carry out data demodulates according to power allocation information.
Preferably, when adopting the multiuser MIMO transmission, the control signaling adopts DCI format 1B form, adds on the CRC of the control messages of the control signaling of DCI format 1B form and covers (or scrambling) power allocation information, does not only increase unnecessary signaling consumption; And, increase implementation complexity hardly because the CRC check complexity is very low.
It will be appreciated by persons skilled in the art that controlling signaling can also use DCI format 2 forms.At this moment, on the CRC of the control messages of the control signaling of DCI format 2 forms, add and cover (or scrambling) power allocation information, can make control signaling in the communication system to Single User MIMO transmission means and multiuser MIMO transmission means transparence, improve the compatible of communication system and reduce the complexity that realizes.
As shown in Figure 2, send another embodiment schematic flow sheet of the method for user power allocation information for the present invention.This method may further comprise the steps:
201, add CRC on the control messages.
202, on control messages, add and cover (or scrambling) power allocation information.
In this step, in control information, add and cover (or scrambling) power allocation information, obtain comprising the multiuser MIMO control signaling of power allocation information.Wherein, add the sequence of covering (or scrambling) be certain regular certain-length by 0 and 1 sequence of forming (comprising complete 0 or complete 1).
Below illustrate for a specific example and how on the CRC of control information, to add the information of covering (or scrambling) power division:
Supposing the system bandwidth 20M, base station 4 transmit antennas, multiuser MIMO adopts the control signaling format of DCI format1B.Wherein, control messages is 32bit among the format 1B, adds that the CRC of 16bit comes to 48bit.
Under the multiuser MIMO transmission means, on the CRC of control messages, add the C-RNTI (that is: the C-RNTI XOR of the CRC of 16bit and 16bit obtains adding the CRC that has covered C-RNTI) of the 16bit that covers (or scrambling) user.
The information of supposing power division is 16 bits, maximum two users' of system's support multiuser MIMO pairing, then can represent all base band powers of CU (the power division mode under single user's the situation) with 0000000000000000, with 0000000000000001 base band power (the power division mode under multi-user's the situation) of representing CU 1/2.
The baseband transmission gross power of supposing the base station again is 1, and the number of users of multiplexing multiuser MIMO is 2 on a certain running time-frequency resource, and then each user respectively gets 1/2 transmitting power.At this moment, on the preceding 16bit of each user's control messages, add the information 0000000000000001 of covering (or scrambling) power division.
The information that it will be appreciated by persons skilled in the art that power division can also add covers (or scrambling) other parts of control messages (such as, the back 16bit of control messages) again.
After receiving terminal (subscriber equipment) is finished the decoding of control signaling, need to attempt twice CRC check (because subscriber equipment does not know it oneself is single user or multiuser multiplexing) and know the power information of distributing to oneself: once remove and add (representing power allocation information) mask of covering on control messages with 0000000000000000, remove (the expression C-RNTI's) mask on the CRC then, obtain the CRC of receiving terminal, do CRC check again.Another time removed with 0000000000000001 and added (expression power allocation information) mask of covering on control messages, removes (the expression C-RNTI's) mask on the CRC then, obtains the CRC of receiving terminal, does CRC check again.Which time obtains correct CRC check result, just judges that subscriber equipment is any power division mode, so just can be correct carry out data demodulates according to power allocation information.Such as, obtain correct check results when removing when adding (expression power allocation information) mask of covering on CRC, 1/2 the transmitting power of then having judged being assigned with of subscriber equipment with 0000000000000001.
203, send and to add the control signaling of power allocation information of having covered (or scrambling).
The control signaling of power allocation information of having covered (or scrambling) by adding can be so that the user of multiuser MIMO transmission be known the power allocation information of oneself in CRC check, so can be correct carry out data demodulates according to power allocation information.
Preferably, when adopting the multiuser MIMO transmission, the control signaling adopts DCI format 1B form, adds on the control messages of the control signaling of DCI format 1B form and covers (or scrambling) power allocation information, does not only increase unnecessary signaling consumption; And, increase implementation complexity hardly because the CRC check complexity is very low.
It will be appreciated by persons skilled in the art that controlling signaling can also use DCI format 2 forms.At this moment, on the control messages of the control signaling of DCI format 2 forms, add and cover (or scrambling) power allocation information, can make control signaling in the communication system to Single User MIMO transmission means and multiuser MIMO transmission means transparence, improve the compatible of communication system and reduce the complexity that realizes.
As shown in Figure 3, send another embodiment schematic flow sheet of the method for user power allocation information for the present invention is a kind of.This method comprises the steps:
301, add CRC on the control messages.
Step 101 is similar among the same embodiment, after adding CRC on the control messages of control signaling, can add on CRC and cover (or scrambling) UE identity, in order to distinguish different users.Wherein, this UE identity can be C-RNTI.
302, on control messages and CRC, add and cover (or scrambling) power allocation information.
In this step, power allocation information partly added cover (or scrambling) on the control messages of control signaling DCI format 1B, part adds covers (or scrambling) on CRC.
Below illustrate for a specific example and how on the CRC of control information, to add the information of covering (or scrambling) power division:
Supposing the system bandwidth 20M, base station 4 transmit antennas, multiuser MIMO adopts the control signaling format of DCI format1B, and then control messages is 32bit among the format 1B, adds that the CRC of 16bit comes to 48bit.
Under the multiuser MIMO transmission means, on CRC, add the C-RNTI (that is: the C-RNTI XOR of the CRC of 16bit and 16bit obtains adding the CRC that has covered C-RNTI) of the 16bit that covers (scrambling) user.
The information of supposing power division is 16 bits, maximum two users' of system's support multiuser MIMO pairing, then, account for 1/2 base band power (the power division mode under multi-user's the situation) with 0000000000000001 expression user with 0000000000000000 expression all base band powers of CU (the power division mode under single user's the situation).
The baseband transmission gross power of supposing the base station again is 1, and the number of users of multiplexing multiuser MIMO is 2 on a certain running time-frequency resource, and then each user respectively gets 1/2 transmitting power.At this moment, on preceding 8 bits of preceding 8 bits of each user's control messages and CRC, add and cover (or scrambling) power allocation information 0000000000000001.Wherein, this adds preceding 8 bits covering sequence (that is: 0000000000000001) and adds and cover on preceding 8 bits of control messages, and this adds back 8 bits of covering sequence and adds and cover on preceding 8 bits of CRC.
It will be appreciated by persons skilled in the art that power allocation information adds the position covered can also be in other position, more than only be a preferable example, can not be used to limit the present invention.
After receiving terminal (subscriber equipment) is finished the decoding of control signaling, need to attempt twice CRC check (because the user does not know it oneself is single user or multiuser multiplexing) and know the power information of distributing to oneself: once remove and add (representing power allocation information) mask of covering on control messages and CRC with 0000000000000000, remove (the expression C-RNTI's) mask on the CRC then, obtain the CRC of receiving terminal, do CRC check again.Another time removed with 0000000000000001 and added (expression power allocation information) mask of covering on control messages and CRC, removes (the expression C-RNTI's) mask on the CRC then, obtains the CRC of receiving terminal, does CRC check again.Which time obtains correct CRC check result, just judges that the user is any power division mode, so just energy correct carry out data demodulates according to power division.Such as, obtain correct check results when removing when adding (expression power allocation information) mask of covering on CRC, 1/2 the transmitting power of then having judged being assigned with of subscriber equipment with 0000000000000001.
303, send and to add the control signaling of power allocation information of having covered (or scrambling).
The control signaling of power allocation information of having covered (or scrambling) by adding can be so that the user of multiuser MIMO transmission be known the power allocation information of oneself in CRC check, so can be correct carry out data demodulates according to power allocation information.
Preferably, when adopting the multiuser MIMO transmission, the control signaling adopts DCI format 1B form, on the control messages of the control signaling of DCI format 1B form and add on the CRC and cover (or scrambling) power allocation information, does not only increase unnecessary signaling consumption; And, increase implementation complexity hardly because the CRC check complexity is very low.
The method that the transmit power assignment information that provides in the embodiment of the invention is provided not only can adopt the control signaling of DCI format 1B form, can also adopt the control signaling of DCIformat 2 forms.When adopting the control signaling of DCI format 2 forms, the control signaling not only can improve the compatibility of system for Single User MIMO transmission means and multiuser MIMO transmission means transparence, complexity that can also the realization of reduction system.
As shown in Figure 4, obtain an embodiment schematic flow sheet of the method for user power allocation information for the present invention.This method comprises:
401, receive and to add the control signaling of user power allocation information of having covered (or scrambling).
In the system that adopts the multiuser MIMO transmission means, on the CRC of the control messages of control signaling, also add cover (or scrambling) UE identity (such as, C-RNTI), belong to that subscriber equipment in order to distinguish the control signaling.
402, obtain to add and cover (or scrambling) user power allocation information on this control signaling.
Under the multiuser MIMO transmission means, the total transmitted power in base station need be distributed between a plurality of users of pairing mutually.The power that the user of each pairing is assigned with (or being called the power division mode) is being represented by 0 and 1 sequence of forming (comprising complete 0 or complete 1) by certain rule, certain-length usually.
When subscriber equipment carries out CRC check to the control messages of the control signaling that receives, at first remove to add and cover or scrambling (the expression power allocation information) mask or scrambler on the control signaling, to obtain CRC according to the sequence of power division mode correspondence; According to the CRC that obtains the control messages of control signaling is carried out CRC check then; If CRC check result is correct, then obtain the power that the power division mode of this sequence correspondence is assigned with as described subscriber equipment.
Below add with user's power allocation information that to cover (or scrambling) be example on the CRC of the control messages correspondence of control signaling, illustrate how subscriber equipment obtains user power allocation information:
Suppose communication system bandwidth 20M, base station 4 transmit antennas, the control signaling format of employing DCI format 1B under the multiuser MIMO transmission means.Wherein, control messages is 32bit among the DCI format 1B, adds that the CRC of 16bit comes to 48bit.
Under the multiuser MIMO transmission means,, on the CRC of control messages, add the C-RNTI (that is: the C-RNTI XOR of the CRC of 16bit and 16bit obtains adding the CRC that has covered C-RNTI) of the 16bit that covers (or scrambling) user in order to distinguish different users.
The information of supposing power division is 16bit, maximum two users' of communication system support multiuser MIMO pairing, then can represent all base band powers of CU (the power division mode under single user's the situation) with 0000000000000000, with 0000000000000001 base band power (the power division mode under multi-user's the situation) of representing CU 1/2.
The baseband transmission gross power of supposing the base station again is 1, and the number of users of multiplexing multiuser MIMO is 2 on a certain running time-frequency resource, then the transmitting power of each user each minute 1/2.At this moment, covered (or scrambling) in adding of each user and added the information 0000000000000001 of covering (or scrambling) power division on the CRC of C-RNTI again.
After receiving terminal (subscriber equipment) is finished the decoding of control signaling, need to attempt twice CRC check (because subscriber equipment does not know it oneself is single user or multiuser multiplexing) and know the power information of distributing to oneself: once remove and add (representing power allocation information) mask of covering on CRC with 0000000000000000, remove then and add (expression C-RNTI's) mask (also promptly directly removing mask) of covering on CRC with C-RNTI, obtain the CRC of receiving terminal, do CRC check again.Another time removed with 0000000000000001 and added (expression power allocation information) mask of covering on CRC, removes then to add (expression C-RNTI's) mask of covering on CRC, obtains the CRC of receiving terminal, does CRC check again.Which time obtains correct CRC check result, just judges that subscriber equipment is any power division mode, so just can be correct carry out data demodulates according to power allocation information.Such as, obtain correct check results when removing when adding (expression power allocation information) mask of covering on CRC, 1/2 the transmitting power of then having judged being assigned with of subscriber equipment with 0000000000000001.
The all or part of step that it will be appreciated by persons skilled in the art that the method that realizes above-mentioned transmission user power allocation information or obtain in the method for user power allocation information is to instruct relevant hardware to finish by computer program.This program can be stored in a kind of computer-readable recording medium, such as: ROM, RAM, magnetic disc, CD etc.
The embodiment of the invention also provides a kind of device 50 that sends user power allocation information.As shown in Figure 5, this device comprises:
Add and cover or scrambling unit 501, be used for user power allocation information add cover or scrambling control signaling;
Transmitting element 502, be used to send add cover or scrambling the control signaling of user power allocation information.
Preferably, add and cover or scrambling unit 501 comprises:
With power allocation information add cover or scrambling control signaling control messages on the unit; Perhaps
Power allocation information added cover or the unit of scrambling on the CRC of control messages correspondence of control signaling; Perhaps
With power allocation information partly add cover or scrambling on the control messages of control signaling, another part adds to be covered or the unit of scrambling on the CRC of control messages correspondence of control signaling.
In the system that adopts the multiuser MIMO transmission means, device 50 by above-mentioned transmission user power allocation information, can make subscriber equipment when the control messages of control signaling is carried out CRC check, know the power information of distributing to oneself, and then can correctly carry out data demodulates.
Preferably, add and cover or scrambling unit 501 is used for adding on the control signaling of DCI format 1B form and covers (or scrambling) user power allocation information.Like this, when adopting the multiuser MIMO transmission means, can not increase signaling consumption unnecessary in the communication system; And, increase implementation complexity hardly because the CRC check complexity is very low.
Certainly, it will be appreciated by persons skilled in the art that to add and cover or scrambling unit 501 can also be used for adding on the control signaling of DCI format 2 forms and covers (or scrambling) user power allocation information.At this moment, can make control signaling in the communication system, improve the compatible of communication system and reduce the complexity that realizes Single User MIMO transmission means and multiuser MIMO transmission means transparence.
Usually, the device 50 of above-mentioned transmission user power allocation information is combined in the base station equipment of communication system, is used for sending the power allocation information that the user is assigned with to the subscriber equipment of communication system.
The embodiment of the invention also provides a kind of device 60 that obtains user power allocation information.As shown in Figure 6, this device comprises:
Receiving element 601, be used to receive add cover or scrambling the control signaling of user power allocation information;
Acquiring unit 602 obtains to add and covers or the user power allocation information of scrambling on the control signaling.
Preferably, acquiring unit 602 comprises:
Remove according to the sequence of power division mode correspondence and to add mask or the scrambler of covering at the expression power allocation information of control on the signaling, to obtain the unit of CRC;
According to stating the CRC that obtains carries out CRC check to the control messages of control signaling unit;
If CRC check result is correct, the unit of the power that the power division mode of obtaining this sequence correspondence is assigned with as subscriber equipment.
Usually, the above-mentioned device 60 that obtains user power allocation information is combined in the subscriber equipment, when being used for that the control messages of the control signaling that receives carried out CRC check, obtaining the power information of distributing to oneself, and then utilize the power information of distributing to oneself correctly to carry out data demodulates.
The embodiment of the invention also provides a kind of communication system, and this communication system comprises the above-mentioned subscriber equipment 60 that is used to send the base station equipment 50 of user power allocation information and is used to obtain power allocation information.
In this communication system, when adopting the multiuser MIMO transmission means, base station equipment 50 adds by the power allocation information with the user covers (or scrambling) on the control signaling, sends to subscriber equipment 60 then.Subscriber equipment 60 just can be known the power information of distributing to oneself, and then correctly carry out data demodulates after receiving and adding the control signaling of user power allocation information of having covered (or scrambling) when carrying out CRC check.
Being preferred embodiment of the present invention only below, is 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 (15)
1. a method that sends user power allocation information is characterized in that, comprises:
With user power allocation information add cover or scrambling control signaling on;
Send described add cover or scrambling the control signaling of user power allocation information.
2. the method for claim 1 is characterized in that, user power allocation information is added cover or scrambling comprises in the step of control on the signaling:
With described power allocation information add cover or scrambling control signaling control messages on; Perhaps
With described power allocation information add cover or scrambling on the cyclic redundancy code CRC of control messages correspondence of control signaling; Perhaps
With described power allocation information partly add cover or scrambling on the control messages of control signaling, another part add cover or scrambling on the CRC of control messages correspondence of control signaling.
3. method as claimed in claim 2 is characterized in that, described method also comprises:
On described CRC, add and cover or the scrambling customer equipment identification.
4. method as claimed in claim 3 is characterized in that, described customer equipment identification is the interim label of cell-radio network.
5. as any described method of claim 1-4, it is characterized in that,
The form of described control signaling is descending control messages DCI format 1B form or DCI format2 form.
6. a device that sends user power allocation information is characterized in that, comprising:
Add and cover or scrambling unit, be used for user power allocation information add cover or scrambling control signaling;
Transmitting element, be used to send described add cover or scrambling the control signaling of user power allocation information.
7, device as claimed in claim 6 is characterized in that, described adding covered or scrambling unit comprises:
With described power allocation information add cover or scrambling control signaling control messages on the unit; Perhaps
Described power allocation information added cover or the unit of scrambling on the CRC of control messages correspondence of control signaling; Perhaps
With described power allocation information partly add cover or scrambling on the control messages of control signaling, another part adds to be covered or the unit of scrambling on the CRC of control messages correspondence of control signaling.
8. a base station equipment is characterized in that, described base station equipment comprises the device of claim 6 or 7 described transmission user power allocation informations.
9. a method of obtaining user power allocation information is characterized in that, described method comprises:
Reception add cover or scrambling the control signaling of user power allocation information;
Obtain to add and cover or the described user power allocation information of scrambling on described control signaling.
10. method as claimed in claim 9 is characterized in that, obtains to add and covers or the step of the described user power allocation information of scrambling on described control signaling comprises:
Remove to add with the sequence of representing the power division mode and cover or the mask of representing power allocation information or the scrambler of scrambling on described control signaling, to obtain CRC;
According to the described CRC that obtains the control messages of described control signaling is carried out CRC check;
If CRC check result is correct, obtain the power that power division mode that described sequence represents is assigned with as described subscriber equipment.
11., it is characterized in that the form of described control signaling is DCI format 1B or DCI format 2 forms as claim 9 or 10 described methods.
12, a kind of device that obtains user power allocation information is characterized in that, described device comprises:
Receiving element, be used to receive add cover or scrambling the control signaling of user power allocation information;
Acquiring unit obtains to add and covers or the described user power allocation information of scrambling on described control signaling.
13, device as claimed in claim 12 is characterized in that, described acquiring unit comprises:
Remove with the sequence of representing the power division mode and to add the mask of representing power allocation information or the scrambler of covering on described control signaling, to obtain the unit of CRC;
The control messages of described control signaling is carried out the unit of CRC check according to the described CRC that obtains;
If CRC check result is correct, obtain the unit of the power that power division mode that described sequence represents is assigned with as described subscriber equipment.
14, a kind of subscriber equipment is characterized in that, described subscriber equipment comprises the device that claim 12 or 13 described users obtain user power allocation information.
15. a communication system is characterized in that, described communication system comprises the described base station equipment of claim 8 and claim requires 14 described subscriber equipmenies.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810067987A CN101615978A (en) | 2008-06-23 | 2008-06-23 | Send, obtain the method and apparatus of user power allocation information |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810067987A CN101615978A (en) | 2008-06-23 | 2008-06-23 | Send, obtain the method and apparatus of user power allocation information |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742626B (en) * | 2010-01-14 | 2013-06-26 | 华为技术有限公司 | Power regulating method, power regulating system, base station and user equipment |
| CN103430471A (en) * | 2011-03-30 | 2013-12-04 | 瑞典爱立信有限公司 | Error handling in passive optical network |
| CN104170269A (en) * | 2012-08-15 | 2014-11-26 | 华为技术有限公司 | Power control method, base station and user equipment |
| CN106470487A (en) * | 2015-08-19 | 2017-03-01 | 中国移动通信集团公司 | Power distribution indicating means, relevant device and system |
-
2008
- 2008-06-23 CN CN200810067987A patent/CN101615978A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742626B (en) * | 2010-01-14 | 2013-06-26 | 华为技术有限公司 | Power regulating method, power regulating system, base station and user equipment |
| CN103430471A (en) * | 2011-03-30 | 2013-12-04 | 瑞典爱立信有限公司 | Error handling in passive optical network |
| CN103430471B (en) * | 2011-03-30 | 2016-12-21 | 瑞典爱立信有限公司 | Fault processing in EPON |
| CN104170269A (en) * | 2012-08-15 | 2014-11-26 | 华为技术有限公司 | Power control method, base station and user equipment |
| CN104170269B (en) * | 2012-08-15 | 2017-11-28 | 华为技术有限公司 | A kind of Poewr control method, base station and user equipment |
| CN106470487A (en) * | 2015-08-19 | 2017-03-01 | 中国移动通信集团公司 | Power distribution indicating means, relevant device and system |
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Application publication date: 20091230 |