EDGE技术交流-话统和参数.docVIP

EDGE技术交流 话统&参数2008-4-23Alcatel Lucent目 录1话统介绍31.1EDGE网络渗透指标31.2系统负荷预警指标51.3PDCH复用度指标61.4TBF指标61.5EGPRS PDCH平均速率71.6EGPRS 重传率72无线参数介绍82.1参数定义82.2无线逻辑参数评估列表121 话统介绍1.1 EDGE网络渗透指标 EDGE网络渗透指标在于了解EDGE用户的终端支持情况、数据业务中EDGE的占比。1.1.1 EDGE手机渗透率通过话务报告：EDGE手机渗透率(MS与网络有交互时的渗透率)P450c/(P450a+P450b+P450c)相关counter定义：P450a：近似GPU下R1997、R1998版本手机数P450b：近似GPU下R1999版本GPRS手机数P450c：近似GPU下R1999版本EDGE手机数1.1.2 EDGE业务流量 EDGE业务流量占比DL EGPRS有效流量占比= (p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)/(p55a*160+p55b*240+p55c*288+p55d*400+p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*100 EDGE业务速率占比1】DL中MCS1流量比例=p55e*176/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1002】DL中MCS2流量比例=p55f*224/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1003】DL中MCS3流量比例=p55g*296/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1004】DL中MCS4流量比例=p55h*352/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1005】DL中MCS5流量比例=p55i*448/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1006】DL中MCS6流量比例=p55j*592/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1007】DL中MCS7流量比例=(p55k*896/2)/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1008】DL中MCS8流量比例=(p55l*1088/2)/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*1009】DL中MCS9流量比例 =(p55m*1184/2)/(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)*100附录：Counter定义P55a ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_CS1P55b ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_CS2P55c ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_CS3P55d ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_CS4P55e ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS1P55f ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS2P55g ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS3P55h ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS4P55i ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS5P55j ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS6P55k ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS7P55l ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS8P55m ：NB_USEFUL_DL_RLC_BLOCK_PDTCH_MCS9UL EGPRS有效流量占比= (p57e*176+p57f*224+p57g*296+p57h*352+p57i*448+p57j*592+(p57k*896+p57l*1088+p57m*1184)/2)/(p57a*160+p57b*240+p57c*288+p57d*400+p57e*176+p57f*224+p57g*296+p57h*352+p57i*448+p57j*592+(p57k*896+p57l*1088+p57m*1184)/2)*100附录：Counter定义P57a ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_CS1P57b ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_CS2P57c ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_CS3P57d ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_CS4P57e ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS1P57f ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS2P57g ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS3P57h ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS4P57i ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS5P57j ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS6P57k ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS7P57l ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS8P57m ：NB_USEFUL_UL_RLC_BLOCK_PDTCH_MCS91.2 系统负荷预警指标EDGE业务的数据流量相对GPRS有明显增加，因此传输资源和GPU的负荷在EDGE网络中就显得尤为重要，以下提供了相应的负荷评估指标： GPU负荷评估1】 GPU/PMU拥塞标准GPU负荷评估项判断准则建议GPU/PMU拥塞标准P402/360000.1%扩GPU/GPP77a 95 P402：Cumulative time during which the GPU stays in the PMU CPU overload state due to PMU CPU power limitations(每秒采样10次)P77：Maximum value of the PMU CPU power budget observed during the granularity period.2】 GPU_DSP 拥塞标准GPU负荷评估项判断准则建议GPU_DSP 拥塞标准P384/360000.1%扩GPU/GPP384：The counter is started when a DSP of a GPU enters the congestion state注：以上Counter均是每秒采样10次。 Ater口资源评估Ater口资源评估项判断准则建议Ater口拥塞标准P383a/360000.1%扩Ater传输P383b/3600030%P383a: Atermux congestion duration (in seconds) due to a lack of Ater nibbles on the Atermux interface.P383b: Time (cumulated over a granularity period) during which the GPU remains in high Ater usage注：以上Counter均是每秒采样10次，其中P383b取决于OMCR参数Ater_Usage_Threshold的设置。 Abis口资源评估Abis口资源评估项判断准则建议Abis资源拥塞标准P484 = 0（长时间持续）增加Abis Extra TSP484：Minimum number of free extra and bonus Abis nibbles.Free extra and bonus nibbles are extra and bonus nibbles not currently used in a GCH。负荷评估建议：以上负荷评估所采集的数据建议选取一周以上工作日数据的早晚忙时进行评估1.3 PDCH复用度指标使用平均PDCH复用度指标，超过一定值时（建议值1.2），判定需要进行扩容：原理如下：考虑每一个PDCH上TBF的复用程度PDCH平均复用度PDCH平均复用度公式：p36*(p451b/p16)/ (p414bis/3600)，最新公式：p451b/p38e其中：P36 AV_NB_DL_TBF_SIMUL_EST：一个周期内下行TBF同时建立的平均数。P451b CUMULATED_TIME_PDCH_DL_TBF_CELL：每一个下行TBF占用PDCH的累计时长。P16 CUMULATED_OVERALL_DL_CONNECTION_TIME：下行TBF建立连接的时长。P414bis CUMULATED_TIME_ALLOCATED_SPDCH：一个周期内PDCH分配时长总时长。 举例：P36：TBF同时建立数量=8(p451b/p16)：每一个TBF平均占用PDCH的个数=3p36*(p451b/p16)：PDCH需求数=24(p414bis/3600)：分配的PDCH个数=6p36*(p451b/p16)/ (p414bis/3600)：一个PDCH上叠加的TBF数量=41.4 TBF指标 下行TBF建立成功率(p90a+p90b+p90c+p90d+p90e+p90f)/(p91a+p91b+p91c+p91d+p91e+p91f)*100附录：Counter定义 P90a：NB_DL_TBF_EST_SUCC_MS_Idle_DRX_MPDCH P90b：NB_DL_TBF_EST_SUCC_MS_Transfer_UL P90c：NB_DL_TBF_EST_SUCC_MS_IDLE_DRX_NO_MPDCH P90d：NB_DL_TBF_EST_SUCC_MS_Non_DRX_MPDCH P90e：NB_DL_TBF_EST_SUCC_T3192 P90f：NB_DL_TBF_EST_SUCC_MS_Non_DRX_NO_MPDCH p91a：NB_DL_TBF_EST_REQ_MS_IDLE_DRX_MPDCH P91b：NB_DL_TBF_EST_REQ_MS_Transfer_ULp91c：NB_DL_TBF_EST_REQ_MS_IDLE_DRX_NO_MPDCHp91d：NB_DL_TBF_EST_REQ_MS_Non_DRX_MPDCHp91e：NB_DL_TBF_EST_REQ_T3192p91f：NB_DL_TBF_EST_REQ_MS_Non_DRX_NO_MPDCH 上行TBF建立成功率(p30a+p30b+p30c)/(p62a+p62b+p62c-p438c)*100附录：Counter定义 P30a：NB_UL_TBF_EST_SUCC_MSidle_MastChan P30b：NB_UL_TBF_EST_SUCC_MStransDL P30c：NB_UL_TBF_EST_SUCC_MSidle_NO_MastChanP62a：NB_UL_TBF_EST_REQ_MSidle_MastChanP62b：NB_UL_TBF_EST_REQ_MStransDLP62c：NB_UL_TBF_EST_REQ_MSidle_NO_MastChanP438c：SIG_BLKS_NC2_DL_PACCH_PTM_LOAD1.5 EGPRS PDCH平均速率 DL EGPRS PDCH平均速率(P55e*176+P55f*224+P55g*296+P55h*352+P55i*448+P55j*592+P55k*448+P55l*544+P55m*592)/(P38c/10*1000)附录：Counter定义P38c：CUMULATED_TIME_PDCH_USED_EGPRS UL EGPRS PDCH平均速率(P57e*176+P57f*224+P57g*296+P57h*352+P57i*448+P57j*592+P57k*448+P57l*544+P57m*592)/(P38c/10*1000)附录：Counter定义P38c：CUMULATED_TIME_PDCH_USED_EGPRS1.6 EGPRS 重传率 DL RLC数据重传率 (MCSx)p20e/(p20e+(p55e*176+p55f*224+p55g*296+p55h*352+p55i*448+p55j*592+(p55k*896+p55l*1088+p55m*1184)/2)/8)+p72d)*100附录：Counter定义p20e ：NB_DL_RLC_BYTES_PDTCH_RETRANS_MCSp72d ：NB_DL_RLC_BYTES_PDTCH_LOST_MCS UL RLC数据重传率 (MCSx)p21e/(p21e+(p57e*176+p57f*224+p57g*296+p57h*352+p57i*448+p57j*592+(p57k*896+p57l*1088+p57m*1184)/2)/8)+p73d)*100附录：Counter定义p21e ：NB_DL_RLC_BYTES_PDTCH_RETRANS_MCSp73d ：NB_DL_RLC_BYTES_PDTCH_LOST_MCS2 无线参数介绍2.1 参数定义2.1.1 资源类Ater_Usage_Threshold定义：Threshold (percentage of used Ater nibbles, in a GPU) above which the Ater usage is said high. GPU的Ater口高负荷门限。取值范围：1%-100%默认值：70%影响范围：BSC备注：When the Ater usage is “high”, the GCH_RED_FACTOR_High_Ater_Usage is applied, whereas when the Ater usage is “normal” (i.e. percentage of used Ater nibbles is below the threshold), no GCH reduction factor is applied.若Ater usage为high，则P383b开始计数。GCH_RED_FACTOR_High_Ater_Usage定义：Reduction factor of the number of GCHs targeted per PDCH, when the Ater usage is “high”.取值范围：0.1-1默认值：0.75影响范围：CELLGPRS_MULTISLOT_CLASS_DEF_VALUE定义：Default value of the (E)GPRS multislot class assumed at TBF establishment when the actual MS (E)GPRS multislot class is unknown.取值范围：1: GPRS multislot class 1 (1+1 MS)；2: GPRS multislot class 2 (2+1 MS)；4: GPRS multislot class 4 (3+1 MS)；8: GPRS multislot class 8 (4+1 MS)默认值：8影响范围：BSC备注：在建立one-phase UL TBF时，MFS会激活（E）GPRS的资源预留算法，即为DL TBF预留资源，预留的资源大小由GPRS_MULTISLOT_CLASS_DEF_VALUE决定。若该值为8（4+1），即使仅需要1个DL时隙（GMM/SM信令业务），但是系统会建立4个DL PDCH，且每个PDCH对应n个GCH（由TRX Class n决定）。故在Ater资源拥塞的情况下，该参数可设置为1，即为1+1 MS，可避免在传输GMM/SM信令数据业务时浪费资源；而在进行大数据量传输时，可通过T3资源重分配算法使GCH占用最大资源。这种设置对数据吞吐量可能有影响，因为在数据传输开始时，没有占用到最大的时隙。T_GCH_INACTIVITY定义：- For Evolium BTS : Timer to postpone the release of the unused GCHs of the M-EGCH link of a TRX (the condition for some GCHs of the M-EGCH link of a TRX to become unused is that some TBFs established on that TRX were released).- For Non Evolium BTS : Timer to postpone the release of one slave PDCH, when it does not support any (E)GPRS traffic.取值范围：1-100s步长：1s默认值：3s影响范围：BSCT_GCH_INACTIVITY_LAST定义：- Evolium BTS : Timer to postpone the release of the last N_GCH_FAST_PS_ACCESS(DLS) GCHs established in a cell, when the last TBF has been released in the cell. There is no more (E)GPRS traffic in the cell, but keeping some GCHs established will be useful in case of (E)GPRS traffic resumption in the cell (e.g. WAP, WEB).- Non Evolium BTS : Timer to postpone the release of the last established slave PDCH of a cell, when it does not support GPRS traffic anymore. There is no more GPRS traffic in the cell, but keeping a PDCH established will be useful in case of GPRS traffic resumption in the cell.规则：仅当EN_FAST_INITIAL_GPRS_ACCESS = disable时有效取值范围：1-200s步长：1s默认值：20s影响范围：BSC备注：以上2个参数值越大，Ater口资源使用率就越高。在资源拥塞的情况下，若适当减小以上2个参数，则能尽快释放资源。T_NETWORK_RESPONSE_TIME定义：Maximum expected response time of a network server as seen from the MFS.取值范围：100-5000ms步长：100ms默认值：1600ms影响范围：BSC备注：该参数用于控制DL TBF延迟释放的时间，该参数越大，占用GCH资源的时间就越长，但该参数过小，也会影响到DL/UL TBF的建立时长。2.1.2 测量类BEP_PERIOD定义：Filter constant for EGPRS channel quality measurements.取值范围：1-25默认值：10影响范围：CELL备注：该参数决定了与手机侧的MEAN_BEP和CV_BEP值相关的参数e，即EDGE信道质量平均的周期。在小区不开跳频时，可以考虑把该值适当的调高（例如25），以避免过高的BLER从而导致MCS的变化。N_AVG_I定义：N_AVG_I在系统消息13中对(E)GPRS MS进行广播。(E)GPRS MS使用此参数来进行数据传输模式下干扰信号电平的测量。这些测量值将用于功率控制并上报给网络进行下行链路的调节。取值范围：0-15步长：1默认值：6影响范围：CELL2.1.3 速率以及重传控制类MAX_EGPRS_MCS定义：EGPRS小区允许的最大调制解调速率规则：MAX_EGPRS_MCS = TBF_DL_INIT_MCSMAX_EGPRS_MCS = TBF_UL_INIT_MCS取值范围：1-9默认值：9影响范围：CELLEN_IR_UL定义：Enables/Disables Incremental redundancy for the uplink TBF in the BSS.取值范围：0-1默认值：0影响范围：BSCEN_FULL_IR_DL定义：是否对小区的DL TBF进行分割规则：0: Disable the full IR, so : IR with resegmentation allowed in DL,1: Enable the full IR, so, IR without resegmentation in DL.取值范围：0-1默认值：0影响范围：BSCTBF_DL _INIT_MCS定义：下行TBF建立时初始MCS值取值范围：1-9默认值：3影响范围：CELLTBF_ UL_INIT_MCS定义：上行TBF建立时初始MCS值取值范围：1-9默认值：2影响范围：CELL2.1.4 功控参数EDGE和GPRS一样，仅支持上行功控，但考虑到速率的关系，一般不建议进行功控。ALPHA取值范围：0-1默认值：1影响范围：CELLGAMMA_TNx取值范围：0-62默认值：30影响范围：CELL手机发射功率公式：PCH = min(G0 - GCH - a * (C + 48), PMAX),其中 GCH ：is an MS and channel specific power control parameter, sent to the MS in an RLC control message (see GSM 04.60).G0 = 39 dBm for GSM900 = 36 dBm for DCS1800a：is a system parameter, broadcast on PBCCH or optionally sent to MS in an RLC control message (see GSM 04.08 and 04.60).C ：is the normalised received signal level at the MS.PMAXis the maximum allowed output power in the cell 2.2 无线逻辑参数评估列表评估时主要对现网的Edge参数进行统一（其中部分和GPRS共用），详见下表：参数名类型范围建议值定义备注1备注2ALPHACELL0to10Alpha power control parameter.EDGE和GPRS一样，仅支持上行功控，但考虑到速率的关系，一般不建议进行功控Edge/GPRS共用参数GAMMA_TNxCELL0to62 dB0Binary representation of the “gamma ch” for MS output power control.EDGE和GPRS一样，仅支持上行功控，但考虑到速率的关系，一般不建议进行功控Edge/GPRS共用参数HIGH_TRAFFIC_LOAD_GPRSCELL0to100%90Load threshold used to determine a certain margin of radio timeslots reserved for CS traffic between two sending of the BSCGP Load Indication messages. The threshold is expressed in percentage of the radio timeslots available in the cell.GPRS标记为高负荷的门限Edge/GPRS共用参数MAX_PDCHCELL0to127Maximum number of slave and master PDCHs that can be established in the cell.小区内能建立的最大PDCH数目，建议根据实际数据流量设置Edge/GPRS共用参数MAX_PDCH_HIGH_LOADCELL0to127Maximum number of slave and master PDCHs that can be allocated to the MFS when the CS traffic is high.当CS高话务负荷时能分配的最大PDCH数目，建议根据实际情况设置Edge/GPRS共用参数MAX_PDCH_PER_TBFCELL1to55Maximum number of PDCH allocated to a single (E)GPRS connection.一个TBF能分配的最大PDCH数目Edge/GPRS共用参数MIN_PDCHCELL0to1271Minimum number of master and slave PDCHs that are always allocated to the MFS.最小的PDCH数目，即静态PDCH数目Edge/GPRS共用参数PS_PREF_BCCH_TRXCELL0 to2No PreferenceIndicates whether or not the PS requests shall be preferentially served with PDCH(s) of the BCCH TRX设定PDCH优先配置在BCCH载频，一般不建议使用Edge/GPRS共用参数EN_EGPRS CELLEnable/DisableEnableEnables/Disables EGPRS traffic in the cell EDGE开关，EDGE小区设为Enable Edge参数MAX_EGPRS_MCSCELL1 to 9MCS9Maximum Modulation and Coding Scheme used for EGPRS traffic in the cell设定小区最大MCS,根据小区最大POOL大小不同而分别设定Edge参数TBF_DL_INIT_MCSCELL1 to 9MCS6Value of the downlink modulation and coding scheme when the link adaptation algorithm is disabled or initial value of the modulation and coding scheme otherwiseEDGE下行初始编码方式（开启EDGE后建议开启到MCS6）Edge参数TBF_UL_INIT_MCSCELL1 to 9MCS6Value of the uplink modulation and coding scheme when the link adaptati